15?18 w dc/dc power modules 24 v input series ? regulated single, dual and triple outputs low profile 10.7 mm (0.42 in.), allows 0.8" board pitch ? 0.6 in. if recessed in the printed board proven mtbf >2,000,000 hours at +75 c case temperature and a rugged mechanical construction efficiency 85% typ, at full load. no extra heatsink up to +85c ambient. max.+115c case low emi in conformance with class a in en 55022 and fcc part 15j the 15C18 watts pkc series dc/dc power modules are especially designed for decen-tralized 24 and 28 vdc systems with distributed on-board dc/dc converters. their low profile allows very narrow board pitches and slim designs. by using thickfilm tech- nology, which provides a high degree of integration as well as efficient thermal management, and by utilizing a 300 khz switching frequency based on proprietary drive & control circuits, these highly reliable products can be used in demanding applications within e.g. cellular radio, medical, industrial and aircraft industry. by using magnetic integration of the output voltages in the feedback loop, all outputs are kept within a 3% total tolerance band. input to output isolation is 500 vdc and mechanical ruggedness C specified in conformance with iec 68-2 C is close to requirements for discrete components. extreme temperature conditions can be met since the pkc power modules can operate with full output power in ambient temperatures from C45 to +85c, or up to +115c case temperature also making the products ideal for applications within not temperature controlled environments. the pkc series are manufactured using highly automated manufacturing lines with a world-class quality commitment and a five-year warranty. ericsson microelectronics ab has been an iso 9001 certified supplier since 1991. for a complete product program please reference the back cover. pkc 2000 i
2 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 general notes: 1) corresponding ambient temp. range (t a ) at full output power is C45 to +85c. 2) p<1 kw, t r /t d = 10/1000 ms, i i <8 a. transient supressor threshold voltage is 39 v typ. 3) the converters will operate down to v i 17 v, when v i decreases, but will turn on at v i 18 v, when v i increases (see also operating information). safety the pkc 2000 i dc/dc power modules are designed in accordance with en 60 950. safety of information technology equipment including electrical business equip- ment . and certified by semko. the isolation is an operational insulation in accordance with en 60950. the pkc power modules are recognized by ul and meet the applicable requirements in ul 1950 safety of information technology equip- ment , the applicable canadian safety require- ments and ul 1012 standard for power supplies. the dc/dc power module shall be installed in an end-use equipment. the isolation voltage between input and output and between case and input/output is 500 vdc and the capacitor between the input and output has a value of 10 nf. the leakage current is less than 1ua @ 26 v dc. the case is partly designed in non-coduc- tive plastic. flammability ratings meets ul 94v-0. stress in excess of absolute maximum ratings may cause permanent damage. absolute maximum ratings, sometimes referred to as no destruction limits, are normally tested with one parameter at a time exceeding the limits of output data or electrical characteristics. if exposed to stress above these limits, function and performance may degrade in an unspecified manner. absolute maximum ratings t c case temperature 1) ? 45 +115 c w tr transient input energy 2) 0.6 ws t s storage temperature ? 55 +125 c v i input voltage ? 0.5 36 v dc v rc remote control voltage pin 1 0 5 v dc v iso input to output isolation 500 v dc characteristics min max unit input t c < t cmax unless otherwise specified characteristics conditions min typ max unit v i input voltage range 3) 18 36 v v i off turn-off input voltage (see operating information) 13 17 v v ion turn-on input voltage (see operating information) 14 18 v c i input capacitance 1.4 f v i = 26v, i o =0, input stand-by power t c = 0... +95 c, 0.6 w rc connected to pin 3 i o =0,t c = 0...+95 c 2 w equivalent inrush current resistance 600 m r i rush input idling power p ii p rc characteristics frequency 10?500 hz amplitude 0.75 mm acceleration 10 g number of cycles 10 in each axis vibration (sinusoidal) iec 68-2-6 f c test procedure & conditions environmental characteristics temperature 85c humidity 85% rh duration 500 hours peak acceleration 200 g shock duration 3 ms peak acceleration 40 g bump duration 6 ms number of bumps 1000 in 6 directions temperature ?40c?+125c number of cycles 10 temperature 40c duration 56 days temperature,solder 260c duration 10?13 s shock (half sinus) bump (half sinus) temperature change damp heat accelerated damp heat solder resistability iec 68-2-27 e a iec 68-2-29 e b iec 68-2-14 n a iec 68-2-3 c a iec 68-2-3 c a with bias iec 68-2-20 t b 1a
3 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 mechanical data on-card mounting in-card mounting footprint dimensions in mm (in) case blue anodized aluminum case with a plastic bottom cover and with tin plated brass pins. weight 50 gr (1.76 oz). pin spacing figures are nominal 0.1m. 1m = 2.54 mm (0.1 in) 1 1 23 4 5 6 7 8 9 e 17.8 (0.70) top view 4.64 (0.183) 45.7 (1.80) 55 (2.16) 80 (3.15) 12.7 (0.50) 12.06 (0.475) 1.8-2.0 [9 ] (0.079) pin designation function connections 1 rc remote control to turn-on and turn-off the output. it is also used to adjust the turn-off input voltage threshold (see v ioff p.15) 2 nc the pin is not connected 3 ?in negative input terminal 4 +in positive input terminal 5 aux auxiliary terminal (see v ioff p. 15) 6 out negative output terminal. output 2 in dual and output 3 in triple output models 7 out positive output terminal. output 2 in triple output models. additional return in dual versions 8 rtn return terminal for all outputs 9 out positive output terminal. output 1 in all models
4 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 thermal data electrical data single output fundamental circuit diagrams triple output dual output t sub r th sub-a r th sub-p t a t p p d r th sub-p t sub r th sub-a v t a t p 5 10 15 0 0 0.5 1.0 2.0 1.5 air velocity (m/s) r ( c/w) th sub-a r=6.0c th sub-p two-parameter model power dissipation is generated in the components mounted on the ceramic substrate. the thermal properties of the pkc power module is determined by thermal conduction in the connected pins and thermal convection from the substrate via the case. the two-parameter model characterize the thermal properties of the pkc power module and the equation below can be used for thermal design purposes if detailed information is needed. the values are given for a module mounted on a printed board assem- bly (pba). note that the thermal resistance between the substrate and the air, r th sub-a is strongly dependent on the air velocity. t sub = p d r th sub-p r th sub-a /(r th sub-p + r th sub-a ) + (t p Ct a ) r th sub-a /(r th sub-p + r th sub-a ) + t a where: p d : dissipated power, calculated as p o (1/ -1). t sub : max average substrate temperature, t c max . t a : ambient air temperature at the lower side of the power module. t p : average pin temperature or solder joint temperature. r th sub-p : thermal resistance from t sub to the pins. r th sub-a : thermal resistance from t sub to t a . v : velocity of ambient air. air velocity in free convection is 0.2C 0.3 m/s (40-60 lfm).
5 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 0 3.0 a pkc 2111 pi characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o = 3 a, v i = 26 v v oi output voltage tolerance band v o idling circuit voltage i o =0 a load regulation i o = 0.1? 1.0 i o max , v i = 26 v t tr load transient voltage v tr i o =0.1? 1.0 i o max , v i = 26 v load step = 2.4 a temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max output power p o max * current limiting threshold i lim t c 6 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 0 1.5 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy v oi output voltage tolerance band v o idling circuit voltage i o =0 a load regulation i o = 0.1? 1.0 i o max , v i = 26 v t tr load transient voltage v tr i o =0.1? 1.0 i o max , v i = 26 v load step = 1.2 a short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max output power p o max * current limiting threshold i lim t c 7 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 0 1.2 0 1.2 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o =i o nom , v i = 26 v v oi output voltage tolerance band v o idling circuit voltage i o =0 a load regulation t tr load transient voltage v tr short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max total output power p o max * current limiting threshold i lim short curcuit current i sc v o =0.2 ? 0.5 v, t a =25c hick-up i o =i o nom output ripple & noice 20 hz ? 5 mhz dc ? 50 mhz supply voltage rejection (ac) svr f = 100 hz sine wave, 1 v p-p , v i = 26 v (svr = 20 log (1 v p-p /v op-p )) i o = 0.1? 1.0 i o nom , v i = 26 v line regulation i o =i o nom load transient recovery time 11.75 12.35 11.64 12.36 v 12.40 15 20 v 120 144 mv 360 mv 200 s +600 +600 mv ? 600 ? 600 mv i o =i o nom , t c 8 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 t c = 0?+95c, v i = 18...36v unless otherwise specified. i o1nom = 0.6a, i o2nom = 0.6a 0 1.0 0 1.0 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o =i o nom , v i = 26 v v oi output voltage tolerance band v o idling voltage i o =0 a load regulation i o1 = 0.1? 1.0 i o nom , i o2 = i o nom , v i = 26 v t tr load transient voltage v tr short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max total output power p o max * current limiting threshold i lim t c 9 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 * see also power derating p. 13. max output power on output 2 and 3 jointly is min 10 w ** i lim on each output is set by the total load output t c = 0?+95c, v i = 18...36v unless otherwise specified. i o1nom = 2.0a, i o2, 3nom = 0.2a pkc 2131 pi characteristics conditions unit min typ max efficiency i o = i o nom , v i = 26 v power dissipation p d 79.5 81 % 3.5 w i o =i o nom miscellaneous 0 3.0 0 0.6 0 0.6 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o =i o nom , v i = 26 v v oi output voltage tolerance band v o idling voltage i o =0 a load regulation i o1 = 0.1 ? 1.0 i o nom , i o2, 3 = i o nom , v i = 26 v t tr load transient voltage v tr short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max total output power p o max * current limiting threshold i lim t c 10 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 * see also power derating p. 13. max output power on output 2 and 3 jointly is min 10 w ** i lim on each output is set by the total load output t c = 0?+95c, v i = 18...36v unless otherwise specified. i o1nom = 2.0a, i o2, 3nom = 0.17a pkc 2132 pi 0 3.0 0 0.5 0 0.5 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o =i o nom , v i = 26 v v oi output voltage tolerance band v o idling voltage i o =0 a load regulation i o1 = 0.1 ? 1.0 i o nom , i o2, 3 = i o nom , v i = 26 v t tr load transient voltage v tr short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max total output power p o max * current limiting threshold i lim t c 11 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 * see also power derating p. 13. max output power on output 2 and 3 jointly is min 10 w ** i lim on each output is set by the total load output t c = 0?+95c, v i = 18...36v unless otherwise specified. i o1nom = 2.0a, i o2nom = 0.2a, i o3nom = 0.5a pkc 2135 pi 0 3.0 0 0.6 0 1.0 a characteristics conditions output 1 min typ max unit output voltage initial setting and accuracy t c = +25c, i o =i o nom , v i = 26 v v oi output voltage tolerance band v o idling voltage i o =0 a load regulation i o1 = 0.1 ? 1.0 i o nom , i o2, 3 = i o nom , v i = 26 v t tr load transient voltage v tr short term drift temperature coefficient t coeff ramp-up time t r start-up time t s 0.1 ? 0.9 v o from v i connection to v o = 0.9 v oi output current i o max total output power p o max * current limiting threshold i lim t c 12 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 efficiency (typ) pkc 2121 pi pkc 2111 pi pkc 2113 pi 60 70 80 90 0.3 0.6 0.9 1.2 1.5 load current (a) efficiency (%) 60 70 80 90 0.15 0.30 0.45 0.60 0.75 load current (a) i = i o1 o2 efficiency (%) 0 5 10 15 0 0.5 1 1.5 2 load current (a) output voltage (v) hick-up mode 0 2 4 6 0 1 23 4 load current (a) output voltage (v) hick-up mode 0 0.4 0.8 1.2 0 0.4 0.8 1.2 output 2 (a) output 1 (a) 60 70 80 90 0.12 0.24 0.36 0.48 0.6 load current (a) i = i o1 o2 efficiency (%) 0 0.4 0.8 1.2 0 0.4 0.8 1.2 output 2 (a) output 1 (a) output characteristic (typ) power derating 60 70 80 90 0.6 1.2 1.8 2.4 3.0 load current (a) efficiency (%) pkc 2126 pi max output current power derating efficiency (typ) max output current power derating efficiency (typ) output characteristic (typ) efficiency (typ) power derating
13 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 pkc 2135 pi pkc 2132 pi pkc 2131 pi 0 0.2 0.4 0.6 0 0.2 0.4 0.6 0.8 1 2.4 2.1 1.3 0.8 output 3 (a) output 1 (a) 1.7 output 2 (a) 0 0.1 0.2 0.3 0.4 0.5 0 0.1 0.2 0.3 0.4 0.5 2.4 2.1 1.3 0.8 output 3 (a) output 1 (a) 1.7 output 2 (a) 0 0.2 0.4 0.6 0 0.2 0.4 0.6 2.4 2.1 1.3 0.8 output 3 (a) output 1 (a) 1.7 output 2 (a) 60 70 80 90 3 6 912 15 output power (w) efficiency (%) 60 70 80 90 3 6 912 15 output power (w) efficiency (%) 60 70 80 90 3 6 912 15 output power (w) efficiency (%) efficiency (typ) max output current power derating power derating max output current efficiency (typ) efficiency (typ) max output current power derating
14 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 emc specifications remote control (rc) turn-on or turn-off can be realized by using the rc-pin. normal operation is achieved if pin 1 is open (nc). if pin 1 is connected to pin 3 the pkc dc/dc power module turns off. to ensure safe turn-off the voltage difference between pin 1 and 3 shall be less than 1.8 v. rc is ttl open collector compatible (see fig. 1). pin 1 is an output and no current should be driven into pin 1. use a diode if necessary e.g. totem pole ttl logic. the internal pull-up resistance is 15 kw. operating information the pkc power module is mounted on a double sided printed circuit board (pb) with groundplane during emc measurements. the fundamental switching frequency is 300 khz 15% @ i o = i o max or i o nom conducted emi (input terminals) pkc series typical conducted emi performance input and output impedance both the source impedance of the power feeding and the load impedance will interact with the impedance of the dc/dc power module. it is most important to have the ratio between l and c as low as possible, i.e. a low characteristic impedance, both at the input and output, as the power modules have a low energy storage capa- bility. a capacitive compensation is necessary if the source or load in- ductance is larger than 10 h. use wet electrolytic capacitors. their equivalent series resistance together with the capacitance acts as a lossless damping filter. suitable capacitor values are in the range10C100 f. v o (pin 8) v i (pin 3) v o (pin 9) rc (pin 1) 15k 1k2 1k tl431 10k 270 fig. 2 radiated emi to minimize radiation it is recommended to have a ground or earth plane in the printed board (pb). c = 4.7 f electrolytic to prevent oscillations on supply mains test set up the pkc meets class a in vde 0871/0878, fcc part 15j, and cispr 22 (en 55022). input dc supply c 4 3 9 1m 8 spectrum analyzer 50 h/ 50 network output ripple & noise (v o ac) output ripple & noise is measured at the output terminals with a 50 mhz oscilloscope and a true rms dvm (crest factor >4.5). the oscilloscope's input impedance should be adapted to the impedance of the coax cable and the output terminal connection should have a minimum ground wire loop. rc (pin 1) pkc control logic ttl in (pin 3) v i v i fig. 1
15 en/lzt 146 24 r1a (replaces en/lzt 137 01 r3) ? ericsson microelectronics ab, june 2000 turn-off input voltage (v ioff ) the input voltage is monitored and the pkc dc/dc power module will turn on and turn off at predetermined levels. the levels can be decreased by means of an external resistor connected between pin 1 and pin 5. a 80 k resistor will decrease the shutdown voltage below 17 v. to maintain the nominal output voltage at input voltages below v i min it may be necessary to decrease the load. warranty ericsson microelectronics warrants to the original purchaser or end user that the products conform to this data sheet and are free from material and workmanship defects for a period of five (5) years from the date of manufacture, if the product is used within specified conditions and not opened. in case the product is dis- continued, claims will be accepted up to three (3) years from the date of the discontinuation. for additional details on this limited warranty we refer to erics- son microelectronics abs general terms and conditions of sales, or individual contract documents. quality reliability meantime between failure (mtbf) is calculated and verified by field data statistics to >2 million hours at full output power and a case temperature of 75c, using the ericsson failure rate data system. for more information see design note 002. maximum capacitive load the maximum recommended capacitance connected direct t the pkc dc/dc power modules output without resistance or inductance in series is 100 f/a (output current rating). connect capacitors across the load for maximum effectiveness and maxi- mum stability margins. over voltage protection (ovp) the remote control can be utilized also for ovp by using the external circuitry in fig. 2. resistor values are for 5 v output applications, but can easily be adjusted for other output voltages and the desired ovp level. current limiting protection the output power is limited at loads above the output current limiting threshold (i lim ), specified as a minimum value. as the pkc multiple output models are power limited, current limiting threshold for an individual output is set by the loads on the other outputs. the power module can withstand continuous short circuit without destruction. a hick-up mode is used on all models to minimize the internal power dissipation. the hick-up time constant is set by the slow start. quality statement the products are designed and manufactured in an industrial environment where quality systems and methods like iso 9000, 6 and spc, are intensively in use to boost the continuous im- provements strategy. infant mortality or early failures in the products are screened out by a burn-in procedure and an ate- based final test. conservative design rules, design reviews and product qualifi- cations, plus the high competence of an engaged work force, contribute to the high quality of our products. limitation of liability ericsson microelectronics 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). information given in this data sheet is believed to be accurate and reliable. no responsibility is assumed for the consequences of its use nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of ericsson microelectronics. these products are sold only according to ericsson microelectronics? general conditions of sale, unless otherwise confirmed in writing. specifications subject to change without notice.
data sheet en/lzt 146 24 r1a (replaces en/lzt 137 01 r1) ? ericsson microelectronics ab, june 2000 the latest and most complete infor- mation can be found on our website! ericsson microelectronics ab se-164 81 kista, sweden phone: +46 8 757 5000 www.ericsson.com/microelectronics for local sales contacts, please refer to our website or call: int. +46 8 757 4700, fax: +46 8 757 4776 product program output 2 v i v o /i o max +5 v/3 a +12 v/0.6 a ? 12 v/0.6 a 15 w pkc 2131 pi +5 v/3 a +15 v/0.5 a ? 15 v/0.5 a 15 w pkc 2132 pi +5 v/3 a +12 v/0.6 a ? 5 v/1 a l 15 w pkc 2135 pi +12 v/1.2 a ? 12 v/1.2 a 18 w pkc 2121 pi +15 v/1 a ki ? 15 v/1 a aki 18 w pkc 2126 pi 24 v 5 v/3 a 15 w pkc 2111 pi 12 v/1.5 a 18 w pkc 2113 pi p o max ordering no. output 1 output 3
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