models vdc o utput b2-19 size (max.): 3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm) see section b8, case u1, for dimensions. weight: 100 grams maximum screening: standard or es. see section c2 for screening options, see section a5 for ordering information. single 5 12 15 dual ? ? 2 ? 5 description the mflhp series 28 volt dc/dc converters are rated up to 100 watts output power over a ?5 to +100? temperature range with a 28 vdc nominal input. on dual output models, up to 70% of the rated output power can be drawn from either the positive or negative outputs. current sharing allows the units to be paralleled for total power of up to 270 watts. the welded, hermetically sealed package is only 3.005 x 1.505 x 0.400 inches, giving the series an overall power density of up to 67 watts per cubic inch. d esign f eatures the mflhp series converters are switching regulators that use a quasi-square wave, single ended forward converter design with a constant switching frequency of 600 khz. isolation between input and output circuits is provided with a trans- former in the forward path and wide bandwidth magnetic coupling in the feedback control loop. the mflhp series uses a unique dual loop feedback technique that controls output current with an inner feedback loop and output voltage with a cascaded voltage mode feedback loop. the additional secondary current mode feedback loop improves transient response in a manner similar to primary current mode control and allows for ease of paralleling. tight load regulation is achieved through a wide-bandwidth magnetic feedback circuit. the output voltage on single mflhp models can be easily trimmed by adding an external resistor. (see figure 1 for voltage changes with different resistor values.) i nhibit the mflhp series converters have two ttl compatible inhibit terminals (inh1 and inh2) that can be used to disable power conversion, resulting in a very low quiescent input current. an open collector ttl compatible low (<0.8 volts) is required between inh1 (pin 4) and input common (pin 2) to inhibit the converter. an open collector ttl compatible low (<0.5 volts) is required between inh2 (pin 12) and output common (pin 8) to inhibit the converter. the application of intermediate voltages to these pins (1.5 to 10.5 volts) should be avoided. c urrent s haring and p arallel o peration multiple mflhp converters may be used in parallel to drive a common load (see figure 2). in this mode of operation the load current is shared by two or three mflhp converters. in current sharing mode, one mflhp converter is designated as a master. the slave pin (pin 11) of the master is left unconnected and the mstr/inh2 pin (pin 12) of the master is connected to the slave pin (pin 11) of the slave units. the units designated as slaves have the mstr/inh2 pin (pin 12) connected to the sns rtn pin (pin 9). figure 2 shows the typical setup for two or three units in parallel. note that synchronizing the units together (though shown in the figure) is not required for current sharing operation. a second slave unit may be placed in parallel with a master and slave; this requires the tri pin (pin 3) of the master unit to be connected to the sns rtn pin (pin 9). when paralleled, 76% of the total combined power ratings of the mflhp converters are available at the load. overload and short circuit performance are not adversely affected during parallel operation. dc/dc c onverters 28 v olt i nput mflhp series 100 watt f eatures ?5 to +100? operation 19 to 40 vdc input fully isolated magnetic feedback fixed frequency, 600 khz typical topology ?single ended forward 80 v for up to 50 ms transient protection inhibit function ?input and output sync function ?input and output output trim on single output models indefinite short circuit protection remote sense on single output models up to 87% efficiency parallelable up to 228 watts
typical characteristics sync in and inhibit (inh1, inh2) recommended operating conditions absolute maximum ratings input voltage 19 to 40 vdc power dissipation (pd) 20 watts output power 80 to 100 watts depending on model lead soldering temperature (10 sec per lead) 300? storage temperature range (case) ?5? to +150? b2-20 mflhp series 100 watt dc/dc c onverters output voltage temperature coefficient 100 ppm/? typical input to output capacitance 150 pf typical isolation 100 megohm minimum at 500 v audio rejection 50 db typical conversion frequency free run mode 600 khz typical 550 khz min, 650 khz. max external sync range 525 to 675 khz inhibit pin voltage (unit enabled) inh1 = 9 to12 v, inh2 = 6 to 9 v input voltage range 19 to 40 vdc continuous 80 v for 50 msec transient case operating temperature (tc) ?5 to +100? full power ?5 to +135? absolute derating output power/current linearly from 100% at 100? to 0% at 135? electrical characteristics: ?0? to +100? tc, 28 vdc vin, 100% load, free run, unless otherwise specified. sync in (525 to 675 khz) duty cycle 40% min, 60% max logic low 0.8 v max logic high 4.5 v min referenced to input common if not used, connect to input common sync out - referenced to input common inhibit (inh1, inh2) ttl open collector logic low (output disabled) current ?0 to ? ma inh1 referenced to input common logic low 0.8 v max inh2 referenced to output common logic low 0.5 v max logic high (output enabled) open collector notes 1. unit will shut down above approximately 45v but will be undamaged and will restart when voltage drops into normal range. 2. indefinite short circuit protection not guaranteed above 100? case. 3. recovery time is measured from application of the transient to point at which vout is within 1% of final value. 4. transition time 3 10 s. single output models mflhp2805s mflhp2812s mflhp2815s parameter condition min typ max min typ max min typ max units output voltage 25? 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 vdc output current v in = 19 to 40 vdc 0 16 0 7.5 0 6.67 a output power v in = 19 to 40 vdc 0 80 0 90 0 100 w output ripple tc = 25? 15 35 30 75 30 85 voltage 10 k - 2 mhz tc = ?5? to +100? 30 75 45 125 45 150 mv p-p line regulation v in = 19 to 40 vdc 0 20 0 20 0 20 mv load regulation no load to full 0 20 0 20 0 20 mv input voltage continuous 19 28 40 19 28 40 19 28 40 vdc no load to full transient 1 50 ms 80 80 80 v input current no load 70 120 50 80 50 80 ma full load 3.6 3.73 3.8 3.95 4.2 4.40 a inhibited - inh1 9 14 9 14 9 14 ma inhibited - inh2 35 70 35 70 35 70 input ripple current 10 khz - 10 mhz 15 50 15 50 15 50 ma pp efficiency tc = 25? 77 80 83 86 84 87 % load fault 2 power dissipation tc = 25? short circuit 15 20 15 20 15 20 w recovery 1.5 4 1.5 4 1.5 4 ms step load resp. 50% ?100% ?50% transient 350 450 450 700 450 700 mv pk recovery 3 1.5 3.0 1.5 3.0 1.5 3.0 ms step line resp. 19 ?40 ?19 vdc transient 4 250 400 250 400 250 400 mv pk recovery 3 200 300 200 300 200 300 s start-up delay 3.5 6 3.5 6 3.5 6 ms overshoot 0 25 0 50 0 50 mv pk pins not used tr1, master, and slave if not used, leave unconnected
b2-21 mflhp series 100 watt dc/dc c onverters electrical characteristics: ?5? to +100? tc, 28 vdc vin, 100% load, free run, unless otherwise specified. dual output models mflhp2805d mflhp2812d mflhp2815d parameter conditions min typ max min typ max min typ max units output voltage +v out 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15 vdc tc = 25? ? out 4.92 5.00 5.08 11.82 12.00 12.18 14.77 15.00 15.23 output current 1 each output 0 11.2 0 5.3 0 4.67 a v in = 19 to 40 vdc total 0 16.0 0 7.5 0 6.67 output power each output 0 56 0 63 0 70 w v in = 19 to 40 vdc total 0 80 0 90 0 100 output ripple 10 khz - 2 mhz voltage +v out 25 125 50 150 50 200 mv p-p ? out 25 125 50 150 50 200 line regulation +v out 0 50 0 50 0 50 mv v in = 19 to 40 vdc ? out 25 100 25 100 25 100 load regulation +v out 0 50 10 100 10 100 mv no load to full ? out 25 100 50 200 50 200 cross regulation see note 2 6 8 2 4 2 4 % tc = 25? see note 3 3 6 2 4 2 4 input voltage continuous 19 28 40 19 28 40 19 28 40 vdc no load to full transient 4 50 ms 0 80 0 80 0 80 v input current no load 50 120 50 100 550 100 ma tc = 25? full load 3.6 3.8 4.2 a inhibited - inh1 9 14 9 14 9 14 ma inhibited - inh2 35 70 35 70 35 70 input ripple current 10 khz - 10 mhz 15 50 15 50 15 50 ma p-p efficiency 25? tc balanced load 77 80 83 86 84 87 % load fault 5 power dissipation tc = 25? short circuit 15 20 15 20 15 20 w recovery 1.5 4.0 1.5 4.0 1.5 4.0 ms step load 50 %?00%?50% load response v out transient 350 450 450 700 450 700 mv pk recovery 6 1.5 3.0 1.5 3.0 1.5 3.0 ms step line 19 ?40 ?16 v in response v out transient 7 250 400 250 400 250 400 mv pk recovery 6 200 300 200 300 200 300 s start?p delay 3.5 6 3.5 6 3.5 6 ms overshoot 0 25 0 50 0 50 mv p notes 1. up to 70% of the total output power is available from either output providing the opposite output is simultaneously carrying 30% of the total power. 2. effect on the negative output under the following conditions: +p out 30% to 70%; ? out 70% to 30% 3. effect on the negative output under the following conditions: +p out 50%; ? out 10% to 50% 4. unit will shut down above approximately 45v but will be undamaged and will restart when voltage drops into normal range. 5. indefinite short circuit protection not guaranteed above 100? case. 6. recovery time is measured from application of the transient to point at which vout is within 1% of final value. 7. transition time 3 10 s.
b2-22 mflhp series 100 watt dc/dc c onverters single output models connection diagrams - sense and parallel r l 1 2 3 4 5 6 remote sense connection 12 11 10 9 8 7 + 28v + inhibit sync in r l 1 2 3 4 5 6 output voltage adjust connection 12 11 10 9 8 7 + 28v + inhibit sync in ra positive input input common tr1 inh1 sync out sync in mstr/inh2 slave pos. sense sense return output common positive output positive input input common tr1 inh1 sync out sync in mstr/inh2 slave pos. sense sense return output common positive output r l 1 positive input input common tr1 inh1 sync out sync in 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 connect only when 2 slaves are used 12 11 10 9 8 7 12 11 10 9 8 7 12 11 10 9 8 7 + mstr/inh2 slave pos. sense sense return output common positive output master slave 1 slave 2 28v + inhibit sync in positive input input common tr1 inh1 sync out sync in mstr/inh2 slave pos. sense sense return output common positive output positive input input common tr1 inh1 sync out sync in mstr/inh2 slave pos. sense sense return output common positive output f igure 1: s ense c onnections and t rim t able f igure 2: p arallel c onnections
pin out angled corner indicates pin one. 1 2 3 4 5 6 12 11 10 9 8 7 top view mflhp (pin side, marked side) see section b8, case u1 for dimensions. f igure 3: p in o ut b2-23 mflhp series 100 watt dc/dc c onverters model numbering key mflhp 28 05 s / es base model input voltage output voltage screening number of outputs (s = single, d = dual) (standard screening has no designator in this position.) typical performance curves: 25? tc , 28 vdc vin, 100% load, free run, unless otherwise specified. output (watts) mflhp2805s & mflhp2805d efficiency efficiency (%) 60 90 85 80 75 70 10 30 50 70 90 28v 40v 65 19v f igure 4 output power (watts) mflhp2812s & mflhp2812d efficiency efficiency (%) 60 90 85 80 75 70 10 30 50 70 90 65 19v 28v 40v f igure 5 f igure 6 60 90 85 80 75 70 10 30 50 70 90 65 output power (watts) mflhp2815s & mflhp2815d efficiency efficiency (%) 19v 40v 28v 100 pin single output dual output 1 positive input positive input 2 input common input common 3 triple (tri) triple (tri) 4 inhibit 1 (inh1) inhibit 1 (inh1) 5 sync out sync out 6 sync in sync in 7 positive output positive output 8 output common output common 9 sense return negative output 10 positive sense no connection 11 slave slave 12 master / inhibit 2 master / inhibit 2 (mstr/inh2) (mstr/inh2) pin 6 should be connected to input common if external sync (sync in) is not used. sense pins must be connected to their respective outputs if not used.
b2-24 mflhp series 100 watt dc/dc c onverters 20222-001-dts rev a dq# 1002 all technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. interpoint reserves the right to make changes in products or specifications without notice. mflhp series is a trademark of interpoint. copyright 1995-1999 interpoint. all rights reserved. typical performance curves: 25? tc , 28 vdc vin, 100% load, free run, unless otherwise specified. f igure 7 f igure 9 0.1 0. 20. 40. 60. 80. 100. attenuation (db) frequency (khz) mflhp series audio rejection 1 10 100 100mv/div. 100% to 50% 50% to 100% 1ms/div mflhp2805s step load response 50 s/div 19 to 40 v mflhp2805s step line response 100mv/div. 20v/div. vout vin f igure 8 f igure 13 f igure 15 5v/div. 20v/div. v in ?out +vout 1ms/div no load mflhp2815d turn on response 30 40 50 60 70 80 16 18 17 90 19 output power (watts) low line dropout input voltage (volts) 100 mflhp2805s & 5d mflhp2815s & 15d mflhp2812s & 12d 1ms/div no load mflhp2805s turn on response 1v/div. 20v/div. vin vout f igure 10 50 s/div 19 to 40 v mflhp2815d step line response 100mv/div. +vout ?out vin 20v/div. f igure 11 0 30 40 50 60 ?8 ?6 ?4 ?2 2 4 6 8 mflhp2812d mflhp2805d 70 mflhp2815d output load (%) +pout 70 to 30 %, ?out 30 to 70% cross regulation ?out voltage change (%) f igure 14 f igure 12 1ms/div mflhp2815d step load response 200mv/div. 100% to 50% 50% to 100%
b8-36 case case u c ases materials header cold rolled steel/nickel/gold cover kovar/nickel pins #52 alloy/gold compression glass seal case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.2) for two decimal places unless otherwise specified caution heat from reflow or wave soldering may damage the device. solder pins individually with heat application not exceeding 300 c for 10 seconds per pin. case u top view (pin side) see figures 55 and 56 for dimensions 1.505 max (38.23) 3.005 (76.33) max. note: pins are shown for case u1. angled corner indicates pin one f igure 54: c ase u m aximum d imensions
b8-37 case u c ases angled corner indicates pin one. 1 2 3 4 5 6 12 11 10 9 8 7 0.000 0.050 (1.27) 0.000 0.120 (3.05) 0.250 (6.35) 0.450 (11.43) 0.650 (16.51) 0.850 (21.59) 1.050 (26.67) 1.250 (31.75) 1.380 (35.05) 1.505 (38.23) max. 0.000 0.120 (3.05) 0.250 (6.35) 2.750 (69.85) 2.880 (73.15) 3.005 (76.33) max. 0.128 dia (3.25). 0.040 dia (1.02) 0.23 (5.8) lead length 0.400 (10.16) max. 0.220 (5.59 top view case u1 mfl series and mhp series: screening ?standard, es or 883 mflhp series, fmd270 emi filter, and fmd28-461sl emi filters: screening ?standard or es smfl, smflhp, smhp, and ssp series; sfcs, and sfme emi filters: screening ?standard, class h or k hum70 module and lcm module: screening ?standard or es seam seal f igure 55: c ase u1
c2-10 test (125? products) standard /es /883 (class h)* pre-cap inspection method 2017, 2032 yes yes yes temperature cycle (10 times) method 1010, cond. c, -65? to 150? no no yes method 1010, cond. b, -55? to 125? no yes no constant acceleration method 2001, 3000 g no no yes method 2001, 500 g no yes no burn-in method 1015, 160 hours at 125? no no yes 96 hours at 125? case (typical) no yes no final electrical test mil-prf-38534, group a subgroups 1 through 6: -55?, +25?, +125? no no yes subgroups 1 and 4: +25? case yes yes no hermeticity testing fine leak, method 1014, cond. a no yes yes gross leak, method 1014, cond. c no yes yes gross leak, dip (1 x 10 -3 ) yes no no final visual inspection method 2009 yes yes yes test methods are referenced to mil-std-883 as determined by mil-prf-38534. *883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of ?5? to +125?. mor series mflhp series mfl series mhp series mtr series mqo series** mhd series mhv series mhf+ series mhf series** mga series msa series mgh series mch series fm-704a emi filter fmd**/fme emi filter fmc emi filter fmh emi filter fmga emi filter fmsa emi filter hum modules** lcm modules** lim modules qa screening 125? products 125? p roducts applies to the following products **mflhp series, mqo series, mhf series, fmd emi filters, hum modules, and lcm modules do not offer ?83?screening.
|
