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ericsson internal product specificatio n 1 ( 5 ) prepared (also subject responsible if other) no. ezhixzh 1/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) 2012 - 07 - 27 b key features ? advanced bus converter industry standard eighth - brick with digital pmbus interface 5 8.4 x 22.7 x 10.2 mm (2.30 x 0.89 x 0.40 in.) ? optional i ndustry standard 5- pin s for intermediate bus architectures ? industr y- leading power density for t elecom and d atacom 12 9- 147w / sq. in ? ericsson dc/dc energy optimizer built -in ? high efficiency, typ. 9 5.2 % at half load, 12 vout ? fully regulated advanced b us c onverter from 36 - 75vin ? 225 0 vdc input to output isolation ? fast feed forward regulation to manage line transients ? optional baseplate for high temperature applications ? droop lo ad sharing with 10% current share accuracy ? pmbus revision 1. 2 compliant ? 2. 9 million hours mtbf ? iso 9001/14001 certified supplier power management ? configurable soft start/stop ? preci sion delay and ramp - up ? voltage margining ? voltage/current/temperature monitoring ? wide output v oltage range ? configurable protection features safety approvals design for environment meets requirements in high - temperature lead-free soldering processes ericsson internal table of contents 1 (2) prepared (also subject responsible if other) no. sec/s kevin zhou 00152-fgc1011835 approved checked date rev reference sec/s kevin zhou 2012-08-24 c contents ordering info rmation ............................................................. 2 general info rmation ............................................................. 2 safety specif ication ............................................................. 4 absolute maximu m ratings ............................................................. 5 electrical specification 12 v, 22 a / 264 w (36-75v in) bmr 457 0004/001............................... 7 12 v, 25 a / 300 w (40-60v in) bmr 457 0000/002 ............................. 11 12.45 v, 22 a / 261 w (36-75 vin) bmr 457 0007/014 ............................. 15 12.45 v, 25 a / 296 w (40-60 vin) bmr 457 0011/017 ............................. 18 emc specific ation ........................................................... 21 operating info rmation ........................................................... 22 thermal consi deratio n ........................................................... 25 connecti ons ........................................................... 26 pmbus inte rface ........................................................... 27 mechanical in formati on ........................................................... 30 soldering info rmation ........................................................... 33 delivery info rmation ........................................................... 34 product qualification specificat ion ........................................................... 36 e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation
ericsson internal product specificatio n 2 ( 5 ) prepared (also subject responsible if other) no. ezhixzh 1/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) 2012 - 07 - 27 b ordering information product program vin output bmr45 7 0004/00 1 36 C 75 12 v / 2 2 a, 2 64 w bmr45 7 000 7 /0 13 36 C 75 12 v / 22 a, 251 w bmr45 7 000 7 /0 14 36 C 75 12 .45 v / 22 a, 261 w bmr45 7 000 0 /00 2 40 C 60 12 v / 2 5 a, 300 w bmr45 7 0 0 11 /0 16 40 - 60 12 v / 25 a, 285 w bmr45 7 0 0 11 /0 17 40 - 60 12 .45 v / 25 a, 296 w product number and packaging BMR457 n 1 n 2 n 3 n 4 /n 5 n 6 n 7 options n 1 n 2 n 3 n 4 / n 5 n 6 n 7 mechanical pin option x / mechanical option x / hardware opt ion x x / configuration file / x x x optional designation description n 1 n 2 n 3 n 4 n 5 n 6 n 7 0 = standard pin length 5.33 mm 1 = surface mount option note 1 2 = lead length 3.69 mm(0.145 in.) (cut) 3 = lead length 4.57 mm(0.180 in.) (cut) 4 = lead length 2.79 mm(0.110 in.) (cut) 0 = open frame 1 = baseplate 00 = 40-60 vin, 6.9-13.2 vout adjusted, with digital interface 01 = 40-60 vin, 6.9-13.2 vout adjusted, without digital interface 04 = 36-75 vin, 6.9-13.2 vout adjusted, with digital interface 05 = 36-75 vin, 6.9-13.2 vout adjusted, without digital interface 06 = 36-75 vin, 6.9-13.2 vout adjusted, droop load sharing function for parallel operation, without digital interfa ce 07 = 36-75 vin, 6.9-13.2 vout adjusted, droop load sharing function for parallel operation, with digital interface 11 = 40-60 vin, 6.9-13.2 vout adjusted, droop load sharing function for parallel operation, with digital interface 12 = 40-60 vin, 6.9-13.2 vout adjusted, droop load sharing function for parallel operation, without digital interface 001 = 12 v standard configuration for 36-75 vin, n 3 n 4 = 04 or 05 packaging 00 2 = 12 v standard configuration for 40 - 60 vin, n 3 n 4 = 00 or 01 008 = 12 v with positive rc logic configuration for 36-75 vin, n 3 n 4 = 04 or 05 009 = 12 v with positive rc logic configuration for 40-60 vin, n 3 n 4 = 00 or 01 013 = 12 v with 0.6 v droop load sharing function configuration (36-75 vin, n 3 n 4 = 06 or 07) 014 = 12.45 v with 0.6v droop load sharing function configuration (36-75 vin, n 3 n 4 = 06 or 07) 016 = 12 v with 0.6 v droop load sharing function configuration (40 - 60 vin, n 3 n 4 = 11 or 12) 017 = 12.45 v with 0.6v droop load sharing function configuration (40 - 60 vin, n 3 n 4 = 11 or 12) xxx = application specific configuration 25 converters(through hole pin)/tray, pe foam dissipative 20 converters(surface mount pin)/tray, antistatic ppe example: product number bmr45 7 200 4 /00 1 equals an through hole mount lead length 3.69 mm (cut), ope n frame, digital interface with 12 v standard configuration variant. for application specific configurations contact your local ericsson power modules sales representative. general information reliability the failure rate ( ) and mean time between failures (mtbf= 1/ ) is calculated at max output power and an operating ambient temperature (t a ) of +40c . ericsson power modules uses telcordia sr - 332 issue 2 method 1 to calculate the mean steady - state failure rate and standard deviation ( ). telcordi a sr - 332 issue 2 also provides techniques to estimate the upper confidence levels of failure rates based on the mean and standard deviation. mean steady - state failure rate, std. deviation, 4 21 n failures/h 60.9 nfailures/h mtbf (mean value) for the bm r45 7 series = 2. 91 mh. mtbf at 90% confidence level = 2. 37 mh compatibility with rohs requirements the products are compatible with the relevant clauses and requirements of the rohs directive 2011/65/eu and have a maximum concentration value of 0.1% by weight in homogeneous materials for lead, mercury, hexavalent chromium, pbb and pbde and of 0.01% by weight in e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 2
ericsson internal product specificatio n 3 ( 5 ) prepared (also subject responsible if other) no. ezhixzh 1/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) 2012 - 07 - 27 b homogeneous materials for cadmium. exemptions in the rohs directive utilized in ericsson power modules products are found in the statement o f compliance document. ericsson power modules fulfills and will continuously fulfill all its obligations under regulation (ec) no 1907/2006 concerning the registration, evaluation, authorization and restriction of chemicals (reach) as they enter into forc e and is through product materials declarations preparing for the obligations to communicate information on substances in the products. quality statement the products are designed and manufactured in an industrial environment where quality systems and methods like iso 9000, six sigma, and spc are intensively in use to boost the continuous improvements strategy. infant mortality or early failures in the products are screened out and they are subjected to an ate - based final test. conservative design rules, design reviews and product qualifications, plus the high competence of an engaged work force, contribute to the high quality of the products. warranty warranty period and conditions are defined in ericsson power modules general terms and conditions of sale. limitation of liability ericsson power modules does not make any other warranties, expressed or implied including any warranty of merchantability or fitness for a particular purpose (including, but not limited to, use in life support applications , where malfunctions of product can cause injury to a persons health or life). ? ericsson ab 2012 the information and specifications in this technical specification is believed to be correct at the time of publication. however, no liability is accepted for inaccuracies, printing errors or for any consequences thereof. ericsson ab reserves the right to change the contents of this technical specification at any time without prior notice. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 3
ericsson internal product specificatio n 4 ( 5 ) prepared (also subject responsible if other) no. ezhixzh 1/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) 2012 - 07 - 27 b safety specification general information ericsson power modules dc/dc converters and dc/dc regulators are designed in accordance with the safety standards iec 60950 - 1, en 60950 - 1 and ul 60950 -1 safety of information technology equipment . iec/en/ul 60950 - 1 contains requirements to prevent injury or damage due to the following hazards: ? electrical shock ? energy hazards ? fire ? mechanical and heat hazards ? radiation hazards ? chemical hazards on - board dc/dc converters and dc/dc regulators are defined as component power supplies. as components they cannot fully comply with the provisions of any safety requirements without conditions of acceptability. clearance between conductors and between conductive parts of the component power supply and conductors on the board in the final product must meet the applicable safety requirements. certain conditions of acceptability apply for component power supplies with limited stand - off (see mechanical information for further information). it is the responsibility of the installer to ensure that the final product housing these components complies with the requirements of all applicable safety standards and regulations for the final product. component power supplies for general use should comply with the requirements in iec/en/ul 60950 -1 safety of information technology equipment. produ ct related standards, e.g. ieee 802.3af power over ethernet , and ets- 300132- 2 power interface at the input to telecom equipment, operated by direct current (dc) are based on iec/en/ul 60950 - 1 with regards to safety. ericsson power modules dc/dc converter s and dc/dc regulators are ul 60950 - 1 recognized and certified in accordance with en 60950 - 1. the flammability rating for all construction parts of the products meet requirements for v- 0 class material according to iec 60695 -11 - 10, fire hazard testing, test flames C 50 w horizontal and vertical flame test methods. isolated dc/dc converters galvanic isolation between input and output is verified in an electric strength test and the isolation voltage (v iso ) meet s the voltage strength requirement for basic insulation according to iec/en/ul 60950 -1 . it is recommended to use a slow blow fuse at the input of each dc/dc converter. if an input filter is used in the circuit the fuse should be placed in front of the input filter. in the rare event of a component problem that imposes a short circuit on the input source, this fuse will provide the following functions: ? isolate the fault from the input power source so as not to affect the operation of other parts of the system ? protect the distribution wiring from exce ssive current and power loss thus preventing hazardous overheating the dc/dc converter output is considered as s afety e xtra l ow v oltage ( selv) if one of the following conditions is met: ? the input source has double or reinforced insulation from the ac main s according to iec/en/ul 60950 -1 ? the input source has basic or supplementary insulation from the ac mains and the input of the dc/dc converter is maximum 60 vdc and connected to protective earth according to iec/en/ul 60950 -1 ? the input source has basic or supplementary insulation from the ac mains and the dc/dc converter output is connected to protective earth according to iec/en/ul 60950 -1 non - isolated dc/dc regulators the dc/dc regulator output is selv if the input source meets the requirements for selv circuits according to iec/en/ul 60950 - 1 . e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 4
ericsson intern al product specificatio n 1 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l absolute maximum ratings characteristics min typ max unit t p1 operating temperature (see thermal consideration section) -40 +1 25 c t s storage temperature -55 +125 c v i input voltage -0.5 +80 +65* v v iso isolation voltage (input to output test voltage), see note 1 2250 vdc v tr input voltage transient according to etsi en 300 132-2 and telcordia gr-1089- core +100 +80* v v rc remote control pin voltage (see operating information section) -0.3 18 v v logic i/o salert, ctrl, scl, sda, s a0, sa1 -0.3 3.6 v stress in excess of absolute maximum ratings may cause permanent damage. absolute maximum ratings, sometimes referred to as n o destruction limits, are normally tested with one parameter at a time exceeding the limits in the electrical specification. if exposed to stress above these limits, function and performance may degrade in an unspecified manner. note 1: isolation voltage (input/output to base - plate) max 750 vdc. *) apply for the narrow input version v i = 40 - 60 v . fundamen tal circuit diagram -in +in +out -out driver driver control rc isolation auxillary supply rc e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 5
ericsson intern al product specificatio n 2 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l functional description t p1 , t p3 = - 40 to +90oc, v i = 36 to 75 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions configuration file: 190 10-cda 102 0315/001 characteristics conditions min typ max unit pmbus monitoring accuracy vin_read input voltage -2 0.5 2 % vout_read output voltage v i = 53 v -1.0 0.1 1.0 % iout_read output current v i = 53 v, 50-100% of max i o -6 0.15 6 % v i = 53 v, 10% of max i o -0.6 - 0.6 a temp_read temperature controller ic internal sensor 0 5 10 oc fault protection characteristics input under voltage lockout, uvlo factory default - 32 - v setpoint accuracy 0 0.5 1 v hysteresis factory default - 2 - v configurable via pmbus of threshold range, note 1 0 - - v delay - 300 - s (output voltage) over/under voltage protection, ovp/uvp vout_uv_fault_limit factory default - 0 - v configurable via pmbus, note 1 0 - 16 v vout_ov_fault_limit factory default - 15.6 - v configurable via pmbus, note 1 v out - 16 v fault respo nse time - 200 - s over current protection, ocp setpoint accuracy io -6 6 % iout_oc_fault_limit factory default - 25 - a configurable via pmbus, note 1 0 - 100 fault response time - 200 - s over temperature protection, otp otp_fault_limit factory default - 12 5 - c configurable via pmbus, note 1 - 50 12 5 otp hysteresis factory default 10 configurable via pmbus, note 1 0 125 fault response time - 300 - s logic input/output characteristics logic input low (v il ) ctrl, sa0 , sa1, pg , scl, sda, - - 1.1 v logic input high (v ih ) 2.1 - - v logic output low (v ol ) ctrl, pg, salert, scl, sda i ol = 6 ma - - 0.25 v logic output high (v oh ) ctrl, pg, salert, scl, sda i oh = - 6 ma 2.7 - - v bus free time t(buf) note 2 1.3 - us note 1 : see operating information section. note 2 : pmbus timing parameters according to pmbus spec. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 6
ericsson intern al product specificatio n 3 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l electrical specification 12 v, 22 a, 264 w BMR457 0004/001 t p1 = - 40 to +90 oc, v i = 36 to 75 v, sense pins connected to output pins unless otherwise s pecified under conditions. typical values given at: t p1 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c in = 0.1 mf, c out = 0.1 m f. see operating information section for selection of capacitor types. configuration file: 19010 - cda 102 031 5 /001 characteristics conditions min typ max unit v i input voltage range 36 75 v v ioff turn -off input voltage decreasing input voltage 32 33 34 v v ion turn -on input voltage increasing input voltage 34 35 36 v c i internal input capacitance 11 f p o output power 0 264 w efficiency 50% of max i o 94.7 % max i o 94.5 50% of max i o , v i = 48 v 95.2 max i o , v i = 48 v 94.8 p d power dissipation max i o 15.5 22 w p li input idling power i o = 0 a, v i = 53 v 3.5 w p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100 % of max i o 171 180 189 khz v oi output voltage initial setting and accuracy t p1 = +25c, v i = 53 v, i o = 12 a 11.88 12.0 12.12 v v o output adjust range see operating information 6.9 13.2 v output voltage tolerance band 0-100 % of max i o 11.76 12.24 v idling voltage i o = 0 a 11.88 12.12 v line regulation max i o 100 200 mv load regulation v i = 53 v, 1-100 % of max i o 30 100 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s, c out = 2.2 mf oscon type 350 mv t tr load transient recovery time 200 s t r ramp - up time (from 10?90% of v oi ) 10-100 % of max i o 8 ms t s start-up time (from v i connection to 90% of v oi ) 23 ms t f v i shut-down fall time (from v i off to 10% of v o ) max i o 0.7 ms i o = 0 a 6 s t rc rc start-up time max i o 12 ms rc shut-down fall time (from rc off to 10% of v o ) max i o 3 ms i o = 0 a 6 s i o output current 0 22 a i lim current limit threshold v o = 10.8 v, t p1 < max t p1 24 25 26 a i sc short circuit current t p1 = 25oc, see note 1 1.1 a c out recommended capacitive load t p1 = 25oc, see note 2 0 2.2 6 mf v oac output ripple & noise see ripple & noise section, v oi 50 100 mvp -p ovp over voltage protection t p1 = +25c, v i = 53 v, 10 - 100 % of max i o 15.6 v rc sink current, see note 3 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6/2.9 v note 1 : ocp in h ic - up mode note 2 : low esr - value note 3 : sink current drawn by external device connected to the rc pin. minimum sink current required to guarantee activated rc func tion. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 7
ericsson intern al product specificatio n 4 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 22 a, 264 w bmr 457 0004/001 efficiency power dissipation 75 80 85 90 95 100 0 5 10 15 20 25 [a] [%] 36 v 48 v 53 v 75 v 0 4 8 12 16 20 0 5 10 15 20 25 [a] [w] 36 v 48 v 53 v 75 v efficiency vs. load current and input voltage at t p1 = +25 c. dissipated power vs. load current and input voltage at t p1 = +25c. output characteristics current limit charact eristics 11.80 11.90 12.00 12.10 12.20 0 5 10 15 20 25 [a] [v] 36 v 48 v 53 v 75 v 0.00 3.00 6.00 9.00 12.00 15.00 15 18 21 24 27 [a] [v] 36 v 48 v 53 v 75 v o utput voltage vs. load current at t p1 = +25c. o utput voltage vs. load current at i o > max i o , t p1 = +25c. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 8
ericsson intern al product specificatio n 5 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 22 a, 264 w bmr 457 0004/001 start - up shut - down start - up enabled by connecting v i at: t p1 = +25c, v i = 53 v , i o = 22 a resistive load. top trace: output voltage (5 v/div) . bottom trace: input voltage (50 v/div) . time scale: ( 5 ms/div) shut - down enabled by disconnecting v i at: t p1 = +25c, v i = 53 v , i o = 22 a resistive load. top trace: output voltage (5 v/div) . bottom trace: input voltage (50 v/div) . time scale: ( 2 ms/div ). output ripple & noise output load transient response output voltage rippl e at: t p1 = +25c, v i = 53 v , i o = 22 a resistive load. trace: output voltage ( 20 mv/div ). time scale: ( 2 us/div) . output voltage response to load current step - change ( 5.5 C 16.5 C 5.5 a) at: t p1 =+25c, v i = 53 v . c o = 2.2 mf. top trace: output voltage ( 0.5 v/div ). bottom trace: load current (5 a/div) . time scale: (0.5 ms/div) input voltage transient response output voltage response to input voltage transient at : t p1 = +25c, v i = 36 - 75 v, i o = 1 1 a resistive load, c o = 2.2 mf top trace: output voltage (2 v/div.). bottom trace: input voltage (20 v/div.). time scale: (0.5 m s/div.). e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 9
ericsson intern al product specificatio n 6 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 22 a, 264 w bmr 457 0004/001 output current derating C open frame 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating C base plate thermal resistance C base plate 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output c urrent derating C base plate + heat sink output current derating C cold wall sealed box 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 5 10 15 20 25 0 20 40 60 80 100 [c] a tamb 85c available load current vs. base plate temperature. v i = 53 v. see thermal consideration section. tested wi th plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 10
ericsson intern al product specificatio n 7 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l electrical specification 12 v, 25 a, 300 w BMR457 0000/002 t p1 = - 40 to +90 oc, v i = 40 to 60 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 = +25c, vi = 53 vi max i o, unless otherwise specified under conditions. additional cout = 0.1 mf. see operating information section for selection of capacitor types. configuration file: 19010 - cda1020315/002 characteristics conditions min typ max unit v i input voltage range 40 60 v v ioff turn -off input voltage decreasing input voltage 36 37 38 v v ion turn -on input voltage increasing input voltage 38 39 40 v c i internal input capacitance 11 f p o output power 0 300 w efficiency 50% of max i o 95.2 % max i o 94.6 50% of max i o , v i = 48 v 95.1 max i o , v i = 48 v 94.5 p d power dissipation max i o 17 24 w p li input idling power i o = 0 a, v i = 53 v 4.4 w p rc input stand by power v i = 53 v (turned off with rc) 0.4 w f s switching frequency 0-100 % of max i o 180 khz v oi output voltage initial setting and accuracy t p1 = +25c, v i = 53 v, i o = 12 a 11.88 12.00 12.12 v v o output adjust range see operating information 6.9 13.2 v output voltage tolerance band 0-100 % of max i o 11.76 12.24 v idling voltage i o = 0 a 11.88 12.12 v line regulation max i o 50 220 mv load regulation v i = 53 v, 1-100 % of max i o 45 100 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s c out = 2.5 mf oscon type 300 mv t tr load transient recovery time 250 s t r ramp - up time (from 10?90% of v oi ) 10-100 % of max i o 8 ms t s start-up time (from v i connection to 90% of v oi ) 23 ms t f v i shut-down fall time (from v i off to 10% of v o ) max i o 0.7 ms i o = 0 a 6 s t rc rc start-up time max i o 14 ms rc shut-down fall time (from rc off to 10% of v o ) max i o 4 ms i o = 0 a 6 s i o output current 0 25 a i lim curre nt limit threshold t p1 < max t p1 27 30 33 a i sc short circuit current t p1 = 25oc, see note 1 1.1 a c out recommended capacitive load t p1 = 25oc, see note 2 0 2.5 10 mf v oac output ripple & noise see ripple & noise section, v oi 70 140 mvp -p ovp over v oltage protection t p1 = +25c, v i = 53 v, 10 - 100 % of max i o 15.6 v rc sink current, see note 3 see operating information 0.7 ma trigger level see operating information 2.6/2.9 v note 1 : ocp in hic - cup mode note 2 : low esr - value note 3 : sink c urrent drawn by external device connected to the rc pin. minimum sink current required to guarantee activated rc function. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 11
ericsson intern al product specificatio n 8 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 25 a, 300 w bmr 457 000 0 /00 2 efficiency power dissipation 75 80 85 90 95 100 0 5 10 15 20 25 [a] [%] 40 v 53 v 60 v 0 4 8 12 16 20 0 5 10 15 20 25 [a] [w] 40 v 53 v 60 v efficiency vs. load current and input voltage at t p1 = +25 c. dissipated power vs. load current and input voltage at t p1 = +25c. output characteristics current limit characteristics 11.80 11.90 12.00 12.10 12.20 0 5 10 15 20 25 30 [a] [v] 40 v 53 v 60 v 0.00 3.00 6.00 9.00 12.00 15.00 15 20 25 30 35 [a] [v] 40 v 53 v 60 v o utput voltage vs. load current at t p1 = +25c. o utput voltage vs. load current at i o > max i o , t p1 = +25c. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 12
ericsson intern al product specificatio n 9 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 25 a, 300 w bmr 457 0000/002 start - up shut - down start - up enabled by connecting v i at: t p1 = +25c, v i = 53 v , i o = 25 a resistive load. top trace: output voltage (5 v/div) . bottom trace: input voltage ( 5 0 v/div) . time scale: (1 0 ms/div) shut - down enabled by disconnecting v i at: t p1 = +25c, v i = 53 v , i o = 25 a resistive load. top trace: output voltage ( 5 v/div) . bottom trace: input voltage (20 v/div) . time scale: ( 1 ms/div ). output ripple & noise output load transient response output voltage ripple at: t p1 = +25c, v i = 53 v , i o = 25 a resisti ve load. trace: output voltage ( 20 mv/div ). time scale: ( 2 us/div) . output voltage response to load current step - change (6.25 - 18.75 - 6.2 5 a ) at: t p1 =+25c, v i = 53 v . top trace: output voltage (5 00 mv/div ). bottom trace: load current ( 10 a/div) . time s cale: ( 0.5 ms/div) input voltage transient response output voltage response to input voltage transient at: t p1 = +25c, v i = 40 - 60 v, i o = 2 5 a resistive load, c o = 3.3 mf top trace: output voltage (2 v/div.). bottom trace: input voltage (20 v/di v.). time scale: (0.5 ms/div.). e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 13
ericsson intern al product specificatio n 10 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 v, 25 a, 300 w bmr 457 0000/002 output current derating C open frame 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. available load current vs. ambient air temperature and airflow at v i = 53 v. see th ermal consideration section. output current derating C base plate thermal resistance C base plate 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal con sideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating C base plate + heat sink output current de rating C cold wall sealed box 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 5 10 15 20 25 30 0 20 40 60 80 100 [c] [a] tamb 85c available load current vs. base plate temperature. v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 the rmal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 14
ericsson intern al product specificatio n 11 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l electrical specification 12.45 v, 22 a, 261 w BMR457 0007/014 t p1 = - 40 to +90 oc, v i = 36 to 75 v, sense pins connected to outp ut pins unless otherwise specified under conditions. typical values given at: t p1 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c in = 0.1 mf, c out = 0.1 m f. see operating information section for selection of capacitor types. configuration file: 19010 - cda 102 031 5 /0 14 characteristics conditions min typ max unit v i input voltage range 36 75 v v ioff turn -off input voltage decreasing input voltage 32 33 34 v v ion turn -on input voltage increasing input voltage 34 35 36 v c i internal input capacitance 11 f p o output power 0 261 w efficiency 50% of max i o 94.7 % max i o 94.5 50% of max i o , v i = 48 v 95.2 max i o , v i = 48 v 94.8 p d power dissipation max i o 15.3 21 w p li input idling power i o = 0 a, v i = 53 v 3.5 w p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100 % of max i o 171 180 189 khz v oi output voltage initial setting and accuracy t p1 = +25c, v i = 53 v, i o = 0 a 12.415 12.45 12.485 v v o output adjust range see operating information 6.9 13.2 v output voltage tolerance band 0-100 % of max i o 11.5 12.7 v line regulation max i o 100 250 mv load regulation v i = 53 v, 1-100 % of max i o 450 600 700 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s, c out = 2.2 mf oscon type 350 mv t tr load transient recovery time 200 s t r ramp - up time (from 10?90% of v oi ) 10-100 % of max i o 23 ms t s start - up time (from v i connection to 90% of v oi ) 38 ms t f v i shut-down fall time (from v i off to 10% of v o ) max i o 0.7 m s i o = 0 a 6 s t rc rc start-up time max i o 26 ms rc shut-down fall time (from rc off to 10% of v o ) max i o 3.5 ms i o = 0 a 6 s i o output current 0 22 a i lim current limit threshold v o = 10.8 v, t p1 < max t p1 24 25 26 a i sc short circuit current t p1 = 25oc, see note 1 7 a c out recommended capacitive load t p1 = 25oc, see note 2 0 2.2 6 mf v oac output ripple & noise see ripple & noise section, v oi 50 150 mvp -p ovp over voltage protection t p1 = +25c, v i = 53 v, 10-100 % of max i o 15.6 v rc sink current, see note 3 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6/2.9 v note 1 : ocp in hic - up mode note 2 : low esr - value note 3 : sink c urrent drawn by external device connected to the rc pin. minimum sink current required to guarantee activated rc function. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 15
ericsson intern al product specificatio n 12 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12.45 v, 40 a / 476 w , two products in parallel 2 bmr 45 7 0007 /0 14 efficiency power dissipation 75 80 85 90 95 100 0 10 20 30 40 [a] [%] 36 v 48 v 53 v 75 v 0 5 10 15 20 25 30 35 40 45 0 10 20 30 40 [a] [w] 36 v 48 v 53 v 75 v efficiency vs. load current and input voltage at t p1 = +25 c dissipated power vs. load current and input voltage at t p1 = +25c output characteristics current limit characteristics 11.8 11.9 12.0 12.1 12.2 12.3 12.4 12.5 12.6 0 10 20 30 40 [a] [v] 36 v 48 v 53 v 75 v 3.0 5.0 7.0 9.0 11.0 13.0 40 42 44 46 48 50 52 [a] [v] 36 v 48 v 53 v 75 v o utput voltage vs. load current at t p1 , t p3 = +25c o utput voltage vs. load current at i o > max i o , t p1 , t p3 = +25c start - up output load transient response start - up enabled by conne cting v i at: t p1 = +25c, v i = 53 v, i o = 40 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage ( 5 0 v/div.). time scale: ( 2 0 ms/div.). output voltage response to load current step- change ( 10- 30 -10 a) at: t p1 = +25c, v i = 53 v, c o = 2.2 mf. top t race: output voltage (0.5 v/div.). bottom trace: output current (20 a/div.). time scale: ( 0.5 ms/div.). e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 16
ericsson intern al product specificatio n 13 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12.45 v, 22 a, 261 w bmr 457 0007/014 output current derating C open frame 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating C base plate thermal resistance C base plate 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consi deration section. v i = 53 v. output current derating C base plate + heat sink output current derating C cold wall sealed box 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 5 10 15 20 25 0 20 40 60 80 100 [c] a tamb 85c available load current vs. base plate temperature. v i = 53 v. see th ermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 17
ericsson intern al product specificatio n 14 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l electrical specification 12 .45 v, 25 a, 296 w BMR457 00 11 /0 17 t p1 = - 40 to +90 oc, v i = 40 to 60 v, sense pins connected to output pins un less otherwise specified under c onditions. typical values given at: t p1 = +25c, v i = 53 v, max i o ,, unless otherwise specified under conditions. additional cout = 0.1 mf. see operating information section for selection of capacitor types. configuration file: 19010 - cda1020315/0 17 characteristics conditions min typ max unit v i input voltage range 40 60 v v ioff turn -off input voltage decreasing input voltage 36 37 38 v v ion turn -on input voltage increasing input voltage 38 39 40 v c i internal input capacitance 11 f p o output power 0 296 w efficiency 50% of max i o 95.2 % max i o 94.6 50% of max i o , v i = 48 v 95.1 max i o , v i = 48 v 94.5 p d power dissipation max i o 17 24 w p li input idling power i o = 0 a, v i = 53 v 4.4 w p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s switching frequency 0-100 % of max i o 180 khz v oi output voltage in itial setting and accuracy t p1 = +25c, v i = 53 v, i o = 0 a 12.415 12.45 12.485 v v o output adjust range see operating information 6.9 13.2 v output voltage tolerance band 0-100 % of max i o 11.5 12.7 v line regulation max i o 50 220 mv load regulation v i = 53 v, 1-100 % of max i o 400 500 700 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s c out = 2.5 mf oscon type 300 mv (ac) t tr load transient recovery time 250 s t r ramp - up time (from 10?90 % of v oi ) 10-100 % of max i o 23 ms t s start - up time (from v i connection to 90% of v oi ) 38 ms t f v i shut-down fall time (from v i off to 10% of v o ) max i o 0.7 m s i o = 0 a 6 s t rc rc start-up time max i o 14 ms rc shut-down fall time (from rc off to 10% of v o ) max i o 4 ms i o = 0 a 6 s i o output current 0 25 a i lim current limit threshold t p1 < max t p1 27 30 33 a i sc short circuit current t p1 = 25oc, see note 1 11 a c out recommended capacitive load t p1 = 25oc, see note 2 0 2.5 10 mf v oac output ripple & noise see ripple & noise section, v oi 70 140 mvp -p ovp over voltage protection t p1 = +25c, v i = 53 v, 10-100 % of max i o 15.6 v rc sink current, see note 3 see operating information 0.7 ma trigger level see operating information 2.6/2.9 v note 1 : ocp in hic - cup mode , rms value were recorded. note 2 : low esr - value note 3 : sink current drawn by external device connected to the rc pin. minimum sink current required to guarantee activated rc function. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 18
ericsson intern al product specificatio n 15 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical char acteristics 12 .45 v, 45 a, 533 w , 2 products in parallel 2 bmr 457 00 11 /0 17 efficiency power dissipation 75 80 85 90 95 100 0 10 20 30 40 50 [a] [%] 40 v 53 v 60 v 0 4 8 12 16 20 0 10 20 30 40 50 [a] [w] 40 v 53 v 60 v efficiency vs. load current and input voltage at t p1 = +25 c. dissipated power vs. load current and input voltage at t p1 = +25c. output characteristics current limit characteristics 11.80 12.00 12.20 12.40 12.60 0 12 24 36 48 60 [a] [v] 40 v 53 v 60 v 0.00 3.00 6.00 9.00 12.00 15.00 20 30 40 50 60 70 [a] [v] 40 v 53 v 60 v o utput voltage vs. load current at t p1 = +25c. o utput voltage vs. load current at i o > max i o , t p1 = +25c. start - up output load transient response start - up enabled by connecting v i at: t p1 = +25c, v i = 53 v , i o = 25 a resistive load. top trace: output voltage (5 v/div) . bottom trace: input voltage ( 5 0 v/div) . time sca le: (1 0 ms/div) output voltage response to load current step - change (6.25 - 18.75 - 6.2 5 a ) at: t p1 =+25c, v i = 53 v . top trace: output voltage (5 00 mv/div ). bottom trace: load current ( 10 a/div) . time scale: ( 0.5 ms/div) e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 19
ericsson intern al product specificatio n 16 ( 17 ) prepared (also subject responsible if other) no. secsund 2/1301 - bmr 457 uen approve d checked date rev reference sec/d (julia you) ezhixzh 2012 - 08 - 24 c l typical characteristics 12 .45 v, 25 a, 296 w bmr 457 00 11 /0 17 output current derating C open frame 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating C base pl ate thermal resistance C base plate 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating C base plate + heat sink output current derating C cold wall sealed box 0 5 10 15 20 25 0 20 40 60 80 100 [c] [a] 3.0 m/s 2.0 m/s 1.5 m/s 1.0 m/s 0.5 m/s nat. conv. 0 5 10 15 20 25 30 0 20 40 60 80 100 [c] [a] tamb 85c available load current vs. base plate temperature. v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 20
ericsson internal product specificatio n 1 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b emc specification conducted emi measured according to en55022, cispr 22 and fcc part 15j (see test set - up). see design note 009 for detailed information. the fundamental switching frequency is 180 khz for bmr 45 7 at v i = 53 v, max i o . conducted emi inp ut terminal value (typ) emi without filter optional external filter for class b suggested external input filter in order to meet class b in en 55022, cispr 22 and fcc part 15j. l1 c1 c2 c3 c4 c5 r - + module + - 0 0 l2 filter components: c1 = 1 f c2 = 1 f + 220 f c3 = 1 f + 220 f c4 = 2.2 nf c5 = 2.2 nf l1 = 0.81 mh l2 = 0.81 mh emi with filter test set - up layout recommendations the radiated emi performance of the product will depend on the pwb layout and ground layer design. it is also important to consider the sta nd- off of the product. if a ground layer is used, it should be connected to the output of the product and the equipment ground or chassis. a ground layer will increase the stray capacitance in the pwb and improve the high frequency emc performance. outp ut ripple and noise output ripple and noise measured according to figure below. see design note 022 for detailed information. output ripple and noise test setup e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 21
ericsson internal product specificatio n 2 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b operating information power management overview this product is equipped with a pm bus interface to to allow the product to be configured,and communicate with system controllers. the product incorporates a wide range of readable and configurable power management features that are simple to implement with a minimum of external components. additionally, the product includes protection features that continuously safeguard the load from damage due to unexpected system faults. a fault is also shown as an alert on the salert pin. the following product parameters can continuously be monitored by a host: input voltage, output voltage/current, duty cycle and internal temperature. the product is delivered with a default configuration suitable for a wide range operation in terms of input voltage, output voltage, and load. the configuration is stored in an internal non - volatile memory (nvm). all power management functions can be reconfigured using the pmbus interface. please contact your local ericsson power modules representative for design support of custom configurations or appropriate sw tools for design and down - load of your own configurations. input voltage the BMR457 consists of two different product families designed for two different input voltage ranges, 36 to 75 vdc and 40 to 60 vdc, see ordering information. the input voltage range 36 to 75 vdc meets the requirements of the european telecom standard ets 300 132 - 2 for normal input voltage range in C 48 and C 60 vdc systems, - 40.5 to - 57.0 v and C 50.0 to - 72 v respectively. at input voltages exceeding 75 v, the power loss will be higher th an at normal input voltage and t p1 must be limited to absolute max + 125 c. the absolute maximum continuous input voltage is 80 vdc. the input voltage range 40 to 60 vdc meets the requirements for normal input voltage range in - 48 v systems, - 40.5 to -57. 0 v. at input voltages exceeding 60 v, the power loss will be higher than at normal input voltage and t p1 must be limited to absolute max +125 c. the absolute maximum continuous input voltage is 65 vdc. turn - off input voltage the product monitors the in put voltage and will turn on and turn off at predetermined levels. the minimum hysteresis between turn on and turn off input voltage is 2 v. the turn on and turn off levels of the product can be reconfigured using the pmbus interface remote control (rc) the products are fitted with a configurable remote control function. the primary remote control is referenced to the primary negative input connection ( - in). the rc function allows the converter to be turned on/off by an external device like a semiconductor or mechanical switch. the rc pin has an internal pull up resistor. the remote control functions can also be configured using the pmbus the device should be capable of sinking 0.7 ma. when the rc pin is left open, the voltage generated on the rc pin is max 6 v. the standard product is provided with negative logic remote control and will be off until the rc pin is connected to the - in. to turn on the product the voltage between rc pin and - in should be less than 1 v. to turn off the product the rc pin should be left open for a minimum of time 150 s, the same time requirement applies when the product shall turn on . in situations where it is desired to have the product to power up automatically without the need for control signals or a switch, the rc pin can be wired directly to C in or disabled via the 0xe3 command. the logic option for the primary remote control is configured via 0xe3 command using the pmbus . remote control (secondary side) the ctrl - pin can be configured as remote control via th e pmbus interface. in the default configuration the ctrl - pin is disabled and floating. the output can be configured to internal pull - up to 3.3 v using the mfr_ multi_pin_config (0xf9) pmbus command . the ctrl - pin can be left open when not used. the logic options for the secondary remote control can be positive or negative logic. the logic option for the secondary remote control is configured via on_off_config (0x02) command using the pmbus interface , see also mfr_multi_pin_config section. input and output i mpedance the impedance of both the input source and the load will interact with the impedance of the product. it is important that the input source has low characteristic impedance. minimum recommended external input capacitance is 100 f. the performance in some applications can be enhanced by addition of external capacitance as described under external decoupling capacitors. external decoupling capacitors when powering loads with significant dynamic current requirements, the voltage regulation at the point of load can be improved by addition of decoupling capacitors at the load. the most effective technique is to locate low esr ceramic and electrolytic capacitors as close to the load as possible, using several parallel capacitors to lower the effecti ve esr. the ceramic capacitors will handle high - frequency dynamic load changes while the electrolytic capacitors are used to handle low frequency dynamic load changes. ceramic capacitors will also reduce any high frequency noise at the load. it is equally important to use low resistance and low inductance pwb e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 22
ericsson internal product specificatio n 3 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b layouts and cabling. external decoupling capacitors will become part of the products control loop. the control loop is optimized for a wide range of external capacitance and the maximum recommended va lue that could be used without any addit ional analysis is found in the electrical specification. the esr of the capacitors is a very important parameter. stable operation is guaranteed with a verified esr value of > 10 m? across the output connections. for further information please contact your local ericsson power modules representative. parallel operation (droop load share, dls) the bmr 45 7 dls products are variants that can be connected in parallel. the products have a pre - configured voltage droop : t he stated output voltage set point is at no load . the output voltage will decrease when the load current is increased . t he voltage will droop 0.6 v while load reaches max load. this feature allows the products to be connected in parallel and share the current with 10% accuracy. up to 90% of max output current can be used from each product . when running dls - products in parallel command (0xf9) must be set according to mfr_multi_pin_config. to prevent unnecessary current stress , changes of the output voltage must be done with the output disabled. this must be considered for all commands that affect the output voltage. feed forward capability the bmr45 7 products have a feed forward function implemented that can handle sudden input voltage changes. the output voltage will be regulated during an input transient and will typically stay within 10% when an input transient is applied. pmbus configuration and support the product provides a pmbus digital interface that enables the user to configure many aspects of the device operation as well as monitor the input and output parameters. please contact your local ericsson power modules representative for appropriate sw tools to down - load new configurations. output voltage adjust using pmbus the o utput voltag e of the product can be reconfigured using the pmbus interface. margin up/down controls these controls allow the output voltage to be momentarily adjusted, either up or down, by a nominal 10 %. this provides a convenient method for dynamically testing the operation of the load circuit over its supply margin or range. it can also be used to verify the function of supply voltage supervisors. the margin up and down levels of the product can be re - configured using the pmbus interface. soft- start power up t he default rise time of the ramp up is 10 ms. when starting by applying input voltage the control circuit boot - up time add s an additional 15 ms delay. the soft - start power up of the product can be reconfigured using the pmbus interface. the dls variants have a pre - configured ramp up time of 25 ms. remote sense the product has remote sense that can be used to compensate for voltage drops between the output and the point of load. the sense traces should be located close to the pwb ground layer to reduce noise susceptibility. the remote sense circuitry will compensate for up to 10% voltage drop between output pins and the point of load. if the remote sense is not needed +sense should be connected to +out and - sense should be connected to - out. to be able t o use remote sense the converter must be equipped with a communication interface . temperature protection (otp, utp) the products are protected from thermal overload by an internal temperature shutdown protection. when t p1 as defined in thermal consideration section is exceeded the product will shut down. the product will make continuous attempts to start up (non - latching mode) and resume normal operation automatically when the temperature has dropped below the temperature threshold set in t he command ot_warn_limit (0x51) ; the hysteresis is defined in general electrical specification. the otp and hysteresis of the product can be re - configured using the pmbus interface. the product has also an under temperature protection. the otp and utp fault limit and f ault response can be configured via the pmbus. note: using the fault response continue without interruptio n may cause permanent damage to the product over voltage protection (ovp) the product includes over voltage limiting circuitry for protection of the load. the default ovp limit is 30% above the nominal output voltage. if the output voltage exceeds the ovp limit, the product can respond in different ways. the default response from an over voltage fault is to e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 23
ericsson internal product specificatio n 4 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b immediately shut down. the device will continuously check for the presence of the fault condition, and when the fault condition no longer exists the device will be re - enabled. the ovp fault level and fault response can be re - configured using the pmbus interface. over current protection (ocp) the product includes current limiting circuitry for protection at continuous overload. the default setting for the product is hic - up mode if the maximum output current is exceeded and the output voltage is below 0.3vout, set in command iout_oc_lv_fault_li mit (0x48). above the trip voltage value in command 0x48 the product will continue operate while maintaining the output current at the value set by iout_oc_fault_limit (0x46). the load distribution should be designed for the maximum output short circuit cu rrent specified. droop load s hare variants (dls) will enter hic - up mode , with a trip voltage, 0.04vout, set in command iout_oc_lv_fault_limit (0x48). above the trip voltage in command ( 0x48 ) the product will continue operate while maintaining the output current at the value set by iout_oc_fault_limit (0x46). the over current protection of the product can be reconfigured using the pmbus interface. input over/under voltage protection the input of the product can be protected from high input voltage an d low input voltage. the over/under - voltage fault level and fault response can be configured via the pmbus interface. pre - bias start - up capability the product has a pre - bias start up functionality and will not sink current during start u p if a p re- bias source is present at the output terminals . if the pre - bias voltage is lower than the target value set in v out _command (0x21), the product will ramp up to the target value . if the pre - bias voltage is higher than the target value set in vout_command (0x21), the product will ramp down to the target value and in this case sink current for a limited of time set in the command toff_max_warn_limit (0x66). power good the product provides power good (pg) flag in the status word register that indicates the output voltage is within a specified tolerance of its target level and no fault condition exists. if specified in section connections, the product also provides a pg signal output. the power good signal is by d efault configured as active low, push - pull and can be re - configured via the pmbus interface. the power good output can be configured as push- pull or high z when active to permit anding of parallel devices . it is not recommended to use push - pull when paralleling pg - pins, see mfr_multi_pin_config . sync hronization, tracking and external reference this product does not support synchronization, tracking or external reference . switching frequency adjust using pmbus the switching frequency is set to 1 8 0 khz as default but this can be reconfigured via the pmbus interface. the product is optimized at this frequency but can run at lower and higher frequency, (170 khz C 190 khz). the electrical performance can be affected if the switching frequency is changed . mfr_multi_pin_config the mfr_multi_pin_config (0xf9) command enables or disables different functions inside the product. this command can be configured according to the table for different functions. bit 7:6 00 = stand alone 01 = slave (n/a) 10 = dls 11 = master (n/a) 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 bit 5 power good high z when active 0 0 0 0 1 1 0 0 0 0 1 1 bit 4 tracking enable (n/a) 0 0 0 0 0 0 0 0 0 0 0 0 bit 3 external reference (n/a) 0 0 0 0 0 0 0 0 0 0 0 0 bit 2 power good enable 0 0 1 1 1 1 0 0 1 1 1 1 bit 1 reserved 1 1 1 1 1 1 0 0 0 0 0 0 bit 0 secondary remote control pull up/down resistor enable 1) 0 1 0 1 0 1 0 1 0 1 0 1 1) when not used with pmbus, the ctrl input can be internally pulled up or down depending on if it is active high or low. when active low it will be pulled up and vice versa dls, pmbus control (0x82) dls, sec rc w/ pull up/down (0x83) dls, power good push - pull, pmbus control (0x86) dls, power good push - pull, sec rc w/ pull up/down (0x87) dls, power good high z when active, pmbus control (0xa6) dls, power good high z when active , sec rc w/ pull up/down (0xa7) stand alone, pmbus control (0x00) stand alone, sec rc w/ pull up/down (0x01) stand alone, power good push - pull, pmbus control (0x04) stand alone, power good push - pull, sec rc w/ pull up/down (0 x05) stand alone , power good high z when active, pmbus control (0x24) stand alone , power good high z when active, sec rc w/ pull up/down (0x25) the mfr_ multi_pin_config can be reconfigured using the pmbus interface. default configuration is set to power good push - pull (0x04) for stand alone variants and dls power good push - pull (0x86) for droop load share variants . user customized settings this product has 2 data storage set: default data (ericsson factory) and user data. the user data sets priority is higher than the default data. the user data area is empty while shipped to customer. after boot - up, if the controller found no data stored in user data area, it will load default data instead. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 24
ericsson internal product specificatio n 5 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b customer can change the ram data and store the changes into flash memory by pmbus store_user_all, next power cycle will load the user data into ram for execute. store_default_all is write protected to ensure the factory settings is always available for recovery. output voltage regulation the bmr45 7 products ar e designed to be fully regulated within the plotted area. operating outside this area is not recommended. 12.0 12.2 12.4 12.6 12.8 13.0 13.2 13.4 35 45 55 65 75 vin [v] vout [v] vin range: 36 - 75vdc BMR457xx04/xxx 12.0 12.2 12.4 12.6 12.8 13.0 13.2 13.4 35 40 45 50 55 60 65 vin [v] vout [v] vin range:40 - 60vdc BMR457xx00/xxx thermal consideration general the product is desig ned to operate in different thermal environments and sufficient cooling must be provided to ensure reliable operation. for products mounted on a pwb without a heat sink attached, cooling is achieved mainly by conduction, from the pins to the host board, and convection, which is dependant on the airflow across the product. increased airflow enhances the cooling of the product. the output current derating graph found in the o utput section for each model provides the available output current vs. ambient air temperature and air velocity at v i = 53 v. the product is tested on a 254 x 254 mm, 35 m (1 oz), 16- layer test board mounted vertically in a wind tunnel with a cross- section of 608 x 203 mm. for products with base plate used in a sealed box/cold wall application, cooling is achieved mainly by conduction through the cold wall. the output current de rating graphs are found in the output section for each model. the product is tested in a sealed box test set up with ambient temperatures 85, 55 and 25 c . see design note 028 for further details. definition of product operating temperature the product operating temperature is used to monitor the temperature of the product, and proper thermal conditions can be verified by measuring the temperature at positions p1, p2, p3 and p4. the temperature at these positions (t p1 , t p2 , t p3 , t p4 ) should not exceed the maximum temperatures in the table below. the number of measurement points may vary with different thermal design and topology. temperatures abov e maximum t p1 , measured at the reference point p1 ( both for openframe and base plate versions) are not allowed and may cause permanent damage. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 25
ericsson internal product specificatio n 6 ( 7 ) prepared (also subject respons ible if other) no. emaolii 30/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) secsund 2012 - 07 - 27 b position description max temperature p1 pwb (reference point, open frame and base-plate) t p1 =125o c p2 opto-coupler t p2 =105o c p3 secondary mosfet t p3 =125o c p4 magnetic core t p4 =125o c top vie w bottom view o pen frame open frame and baseplate (best air flow direction is f rom negative to positive pins.) ambient temperature calculation for products with base plate the maximum allowed ambient temperature can be calculated by using the thermal resistance. 1. the power loss is calculated by using the formula ((1/) - 1) output power = power losses (pd). = efficiency of p roduct. e.g. 9 5 % = 0.9 5 2. find the thermal resistance (rth) in the thermal resistance graph found in the output section for each model. note that the thermal resistance can be significantly reduced if a heat sink is mounted on the top of the base plate. calculate the temperature increase ( ? t). ? t = rth x pd 3. max allowed ambient temperature is: max t p1 - ? t. e.g. b mr 45 7 0 004/00 1 at 2 m/s: 1. (( ) - 1) 264 w = 15.4 w 2. 1 5.4 w 3. 4 c/w = 52 c 3. 125 c C 52 c = max a mbient temperature is 73 c the actual temperature will be dependent on several factors such as the pwb size, number of layers and direction of airflow. connections (top view) pin designation function 1 + in positive input 2 rc remote control 4 - in negative input 5 - out negative output 6 s+ positive remote sense 7 s- negative remote sense 8 sa0 address pin 0 9 sa1 address pin 1 10 scl pmbus clock 11 sda pmbus data 12 pg power good output 13 dgnd pmbus ground 14 salert pmbus alert signal 15 ctrl pmbus remote control 16 +out positive output 1 0. 9 45 e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 26
ericsson internal product specificatio n 1 ( 4 ) prepared (also subject responsible if other) no. secsund 31/1301 - bmr 456+ uen approved checked date rev reference sec/d (julia you) emaolii 2012 - 06 - 25 b pmbus interface this product provides a pmbus digital interface that enables the user to configure many aspects of the device operation as well as to monitor the input and output voltages, output current and device temperature. the product can be used wit h any standard two - wire i 2 c or smbus host device. in addition, the product is compatible with pmbus version 1.2 and includes an salert line to help mitigate bandwidth limitations related to continuous fault monitoring. the product supports 100 khz and 400 khz bus clock frequency only. the pmbus signals, scl, sda and salert require passive pull - up resistors as stated in the smbus specification. pull - up resistors are required to guar antee the rise time as follows: eq. 7 uscr pp 1 = where r p i s the pull - up resistor value and c p is the bus load. t he maximum allowed bus load is 400 pf. the pull - up resistor should be tied to an external supply between 2.7 to 5.5 v, which should be present prior to or during power - up. if the proper power supply is not available, voltage dividers may be applied. note that in this case, the resistance in the equation above corresponds to parallel connection of the resistors forming the voltage divider. it is recommended to always use pec (packet error check) when co mmunicating via pmbus. for these products it is a requirement to use pec when using send byte to the device, for example command re store_default_all. monitoring via pmbus a system controller (host device) can monitor a wide variety of parameters through the pmbus interface. the controller can monitor fault conditions by monitoring the salert pin, which will be asserted when any number of pre - configured fault or warning conditions occur. the system controller can also continuously monitor any number of power conversion parameters including but not limited to the following: ? input voltage ? output voltage ? output current ? internal junction temperature ? switching frequency (monitor s the set value not actual frequency ) ? duty cycle software tools for design and production for this products ericsson provides software for configuring and monitoring via the pmbus interface. for more information please contact your local ericsson sales representative. pmbus addressing the following figure and ta ble show recomme nded resistor values with min and max voltage range for hard - wiring pmbus addresses (series e12, 1% tolerance resistors suggested): schematic of connection of address resistors. sa0/sa1 index r sa0 /r sa1 [k ? ] 0 10 1 22 2 33 3 47 4 68 5 100 6 150 7 220 the sa0 and sa1 pins can be configured with a resistor to gnd according to the following equation. pmbus address = 8 x (sa0value) + (sa1 value) if the calculated pmbus address is 0, 11 or 12, pmbus address 127 is assigned instead. from a system point of view, the user shall also be aware of further limitations of the addresses as stated in the pmbus specification. it is not recommended to keep the sa0 and sa1 pins left open. i 2 c/smbus C timing setup and hold times timing diagram the setup time, t set , is the time data, sda, must be stable before the rising edge of the clock signal, scl. the hold time t hold , is the time data, sda, must be stable after the rising edge of the clock signal, scl. if these times are violated incorrect data may be captured or meta - stability may occur and the bus communication may fail. when configuring the product, all standard smbus protocols must be followed, including clock e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 27
ericsson internal product specificatio n 2 ( 4 ) prepared (also subject responsible if other) no. secsund 31/1301 - bmr 456+ uen approved checked date rev reference sec/d (julia you) emaolii 2012 - 06 - 25 b stretching. additionally, a bus - free time delay between every smbus transmissi on (between every stop & start condition) must occur. refer to the smbus specification, for smbus electrical and timing requirements. note that an addi tional delay of 5 ms has to be inserted in case of storing the ram content into the internal non - volatile memory. pmbus commands the products are pmbus compliant. the following table lists the implemented pmbus read commands. for more detailed information see pmbus power system management protocol specification; part i C general requirements, transport an d electrical interface and pmbus power system management protocol; part ii C command language. designation cmd prot standard pmbus commands control commands operation 01h no on_off_config 02h no write_protect 10h no output commands vout_mode 20h no vout_command 21h no vout_trim 22h no vout_cal_offset 23h yes vout_max 24h no vout_margin_high 25h no vout_margin_low 26h no vout_transition_rate 27h no vout_scale_loop 29h yes vout_scale_monitor 2ah yes max_duty 32h no frequency_switch 3 3h no vin_on 35h no vin_off 36h no iout_cal_gain 38h yes iout_cal_offset 39h yes fault commands vout_ov_fault_limit 40h no vout_ov_fault_response 41h no vout_ov_warn_limit 42h no vout_uv_warn_limit 43h no vout_uv_fault_limit 44h no vout_uv_fau lt_response 45h no iout_oc_fault_limit 46h no designation cmd prot iout_oc_fault_response 47h no iout_oc_lv_fault_limit 48h no iout_oc_warn_limit 4ah no ot_fault_limit 4fh no ot_fault_response 50h no ot_warn_limit 51h no ut_warn_limit 52h no ut_f ault_limit 53h no ut_fault_response 54h no vin_ov_fault_limit 55h no vin_ov_fault_response 56h no vin_ov_warn_limit 57h no vin_uv_warn_limit 58h no vin_uv_fault_limit 59h no vin_uv_fault_response 5ah no power_good_on 5eh no power_good_off 5fh no time setting commands ton_delay 60h no ton_rise 61h no ton_max_fault_limit 62h no ton_max_fault_response 63h no toff_delay 64h no toff_fall 65h no toff_max_warn_limit 66h no status commands (read only) clear_faults 03h no status_bytes 78h no status_word 79h no status_vout 7ah no status_iout 7bh no status_input 7ch no status_temperature 7dh no status_cml 7eh no status_other 7fh no monitior commands (read only) read_vin 88h no read_vout 8bh no read_iout 8ch no read_temperature_1 8d h no read_temperature_2 8eh no read_duty_cycle 94h no e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 28
ericsson internal product specificatio n 3 ( 4 ) prepared (also subject responsible if other) no. secsund 31/1301 - bmr 456+ uen approved checked date rev reference sec/d (julia you) emaolii 2012 - 06 - 25 b designation cmd prot read_frequency 95h no configuration and control commands user_data_00 b0h no identification commands (read only) pmbus_revision 98h no mfr_id 99h yes mfr_model 9ah yes mfr_revision 9bh yes mfr_location 9ch yes mfr_date 9dh yes mfr_serial 9eh yes supervisory commands store_default_all 11h yes restore_default_all 12h no store_user_all 15h no restore_user_all 16h no capability 19h no product specific commands mfr_power_good_polarity d0h no mfr_vin_scale_monitor d3h yes mfr_select_temp_sensor dch no mfr_vin_offset ddh yes mfr_vout_offset_monitor deh yes mfr_temp_offset_int e1h no mfr_remote_temp_cal e2h no mfr_remote_ctrl e3h no mfr_dead_band_delay e5 h yes mfr_temp_coeff e7h yes mfr_debug_buff f0h no mfr_setup_password f1h no mfr_disable_security_once f2h no mfr_dead_band_iout_threshold f3h yes mfr_security_bit_mask f4h yes mfr_primary_turn f5h yes mfr_secondary_turn f6h yes mfr_ilim_softstart f8h no mfr_multi_pin_config f9h no mfr_dead_band_vin_threshold fah yes mfr_dead_band_vin_iout_hys fbh yes mfr_restart feh no notes: cmd , is short for command. prot, is short for c ommands that are protected with security mask. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 29
ericsson internal product spec. 1 ( 4 ) prepare d (also su bject res po nsible if ot her) no. epetsch/epeihli 4/1301 - bmr 457 uen appro ved chec ke d date rev referenc e sec/d (julia you) see 1 2012 - 06- 27 d mechanical information - hole mount, open frame version all component placements C whether shown as physical components or symbolical outline C are for ref erence only and are subject to change throughout the products life cycle, unless explicitly described and dimensioned in this drawing. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 30
ericsson internal product spec. 2 ( 4 ) prepare d (also su bject res po nsible if ot her) no. epetsch/epeihli/epeihli 4/1301 - bmr 457 uen appro ved chec ke d date rev referenc e sec/d (julia you) see 1 2012 -06- 27 d mechanical informatio n - hole mount, base plate version all component placements C whether shown as physical components or symbolical outline C are for ref erence only and are subject to change throughou t the products life cycle, unless explicitly described and dimensioned in this drawing. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 31
ericsson internal product spec. 3 ( 4 ) prepare d (also su bject res po nsible if ot her) no. epetsch/epeihli/epeihli 4/1301 - bmr 457 uen appro ved chec ke d date rev referenc e sec/d (julia you) see 1 2012 -06- 27 d mechanical informatio n - surface mount version all component placements C whether shown as physical components or symbolical outline C are for ref erence only and are subject to change throughout the products life cycle, unless explicitly described and dimensioned in this drawing. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 32
ericsson internal product spec. 1 ( 5 ) prepared (also subject responsible if other) no. epeihli 5/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) see 1 2012 - 06 - 25 c soldering information - surface mounting the surface mount product is intended for forced convection or v apor phase reflow soldering in snpb and pb- free processes. the reflow profile should be optimised to avoid excessive heating of the product. it is recommended to have a sufficiently extended preheat time to ensure an even temperature across the host pwb and it is also recommended to minimize the time in reflow. a no - clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board, since cleaning residues may affect long time reliability and isolation voltage. general reflow process specifications snpb eutectic pb - free average ramp - up (t product ) 3c/s max 3c/s max typical so lder melting (liquidus) temperature t l 183c 221c minimum reflow time above t l 6 0 s 6 0 s minimum pin temperature t pin 210c 235c peak product temperature t product 225c 260c average ramp - down (t product ) 6c/s max 6c/s max maximum time 25c to pe ak 6 minutes 8 minutes t p roduct maximum t pin minimum time pin profile product profile t l time in reflow time in preheat / soak zone time 25 c to peak temperature minimum pin temperature recommendations pin number 5 chosen as reference location for the minimum pin temperature recommendation since this will likely be the coolest solder joint during the reflow process. snpb solder processes for snpb solder processes, a pin temperature (t pin ) in excess of the solder melting temperature, (t l , 183 c for sn63pb37) for more than 60 seconds and a peak temperature of 22 0c is recommended to ensure a reliable s older joint. for dry packed products only: depending on the type of solder paste and flux system used on the host board, up to a recommended maximum temperature of 245c could be used, if the products are kept in a controlled environment (dry pack handlin g and storage) prior to assembly. lead- free (pb -free) solder processes for pb - free solder processes, a pin temperature (t pin ) in excess of the solder melting temperature (t l , 217 to 221c for snagc u solder alloys) for more than 60 seconds and a peak temperature of 245c on all solder joints is recommended to ensure a reliable solder joint. maximum product temperature requirements top of the product pwb near pin 2 is chosen as reference location for the maximum (peak) allowed product temperature (t product ) since this will likely be the warmest part of the product during the reflow process. snpb solder processes for snpb solder processes, the product is qualified for msl 1 according to ipc/jedec standard j -std- 020c. during reflow t product must no t exceed 225 c at any time. pb -free solder processes for pb - free solder processes, the product is qualified for msl 3 according to ipc /jedec standard j -std- 020c. during reflow t product must not exceed 260 c at any time. dry pack information prod ucts intended for pb - free reflow soldering processes are delivered in standard moisture barrier bags according to ipc/jedec standard j -std- 033 (handling, packing, shipping and use of moisture/reflow sensitivity surface mount devices). using products in high temperature pb - free soldering processes requires dry pack storage and handling. in case the products have been stored in an uncontrolled environment and no longer can be considered dry, the modules must be baked according to j -std- 033. thermocoupler attachment top of pwb near pin 2 for measurement of maximum product temperature, t product pin 5 for measurement of minimum pin (solder joint) temperature, t pin e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 33
ericsson internal product spec. 2 ( 5 ) prepared (also subject responsible if other) no. epeihli 5/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) see 1 2012 - 06 - 25 c soldering information - hole mounting the hole mounted product is intended for plated through hole mounting by wave or manual sol dering. the pin temperature is specified to maximum to 270c for maximum 10 seconds. a maximum preheat rate of 4c/s and maximum preheat temperature of 150c is suggested. when soldering by hand, care should be taken to avoid direct contact between the ho t soldering iron tip and the pins for more than a few seconds in order to prevent overheating. a no - clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board. the cleaning residues may affect long time reliability and isolation voltage. delivery package information the products are delivered in antistatic injection molded trays (jede c design guide 4.10d standard) and in antistatic trays . tray specifications C smd /pin i n paste material antistatic ppe surface resistance 10 5 < ohm/square < 10 12 bakability the trays can be baked at maximum 125c for 48 hours tray thickness 17.40 mm 0.685 [ inch] box capacity 100 products (5 full trays/box) tray weight 125 g empty, 605 g full tray jedec standard tray for 2x5 = 10 products. all dimensions in mm [inch] tolerances: x.x 0.26 [0.01], x.xx 0.13 [0.005] note: pick up positions refer to center of pocket. see mechanical drawing for exact location on product. e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 34
ericsson internal product spec. 3 ( 5 ) prepared (also subject responsible if other) no. epeihli 5/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) see 1 2012 - 06 - 25 c tray specifications C through hole version material pe foam , dissipative surface resistance 10 5 < ohm/square < 10 12 bakability the trays are not bakeable tray capacity 25 converters/tray box capacity 75 products (3 full t rays/box) weight product C open frame 790 g full tray, 140g empty tray product C base plate option 1090 g full tray, 140 g empty tray e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 35
ericsson internal product spec. 4 ( 5 ) prepared (also subject responsible if other) no. epeihli 5/1301 - bmr 457 uen approved checked date rev reference sec/d (julia you) see 1 2012 - 06 - 25 c product qualification specification characteristics external visual inspection ipc-a-610 change of temperature (temperature cycling) iec 60068-2- 14 na temperature range number of cycles dwell/transfer time - 40 to 100c 500 15 min/0-1 min cold (in operation) iec 60068-2-1 ad temperature t a duration - 45c 72 h damp heat iec 60068-2- 67 cy temperature humidity duration 85c 85 % rh 1000 hours dry heat iec 60068-2-2 bd temperature duration 125c 1000 h electrostatic discharge susceptibility iec 61340 - 3 - 1, jesd 22 - a114 iec 61340 - 3 - 2, jesd 22 - a115 human body model (h bm) machine model (mm) class 2, 2000 v class 3, 200 v immersion in cleaning solvents iec 60068-2-45 xa, method 2 water glycol ether isopropyl alcohol 55 c 35 c 35 c mechanical shock iec 60068-2- 27 ea peak acceleration duration 100 g 6 ms moisture reflow sensitivity 1 j- std -020c level 1 (snpb-eutectic) level 3 (pb free) 225c 260c operational life test mil- std -202g, method 108a duration 1000 h resistance to soldering heat 2 iec 60068-2-20 tb, m ethod 1a solder temperature duration 270c 10 - 13 s robustness of terminations iec 60068 - 2 - 21 test ua1 iec 60068 - 2 - 21 test ue1 through hole mount products surface mount products all leads all leads solderability iec 60068-2-58 test td 1 iec 60068-2-20 test ta 2 preconditioning temperature, snpb eutectic temperature, pb-free preconditioning temperature, snpb eutectic temperature, pb - free 150c dry bake 16 h 215c 235c steam ageing 235c 245c vibration, broad band random iec 60068-2- 64 fh, method 1 frequency spectral density duration 10 to 500 hz 0.07 g 2 /hz 10 min in each direction notes 1 only for products intended for reflow soldering (surface mount products) 2 only for products intended for wave soldering (plated through hole products) e BMR457 series fully regulated advanced bus converters input 36-75 v, output up to 25 a / 300 w 1/28701-fgc 101 1835 revc august 2012 ? ericsson ab technical speci?cation 36

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