dc-dc specification 20 watts ? 2:1 input range ? 2.0 x 2.0 x 0.4 metal package ? 1500 vdc isolation ? efficiency up to 91% ? single & dual outputs ? -40 c to +100 c operating temperature ? continuous short circuit protection jch20 series input input voltage range ? 12 v (9-18 vdc) 24 v (18-36 vdc) 48 v (36-72 vdc) input current ? see table input reflected ripple ? 35 ma rms through 12 h inductor, 5 hz to 20 mhz input surge ? 12 v models 25 vdc for 100 ms 24 v models 50 vdc for 100 ms 48 v models 100 vdc for 100 ms output output voltage ? see table voltage balance ? 1.0%, dual output versions minimum load ? no minimum load required line regulation ? 0.5% max load regulation ? 0.5% max setpoint accuracy ? 1.0% max start up delay ? <10 ms start up rise time ? <5 ms ripple & noise ? 100 mv pk-pk for 5 v to 15 v models, 150 mv pk-pk for 24 v models, 20 mhz bw transient response ? 5% max deviation, recovery to within 1% in 300 s for a 25% load change temperature ? 0.02%/c coefficient overcurrent protection ? 130% typical of full load at nominal input short circuit protection ? trip & restart (hiccup mode) with auto recovery capacitive load ? see table xppower.com general efficiency ? see table isolation voltage ? 1500 vdc input to output 1000 vdc input to case 1000 vdc output to case isolation capacitance ? 1000 pf typical switching frequency ? 125 khz typical mtbf ? >600 khrs to mil-std-217f environmental operating temperature ? -40 c to +100 c, derate from 100% load at +85 c to 0% load at +100 c case temperature ? +100 c max storage temperature ? -40 c to +125 c cooling ? convection-cooled operating humidity ? up to 90%, non-condensing emc emissions ? en55022 class a conducted & radiated with external components, see application note esd immunity ? en61000-4-2, 8 kv air discharge perf criteria a, 4 kv contact discharge perf criteria a radiated immunity ? en61000-4-6 level 2 3 v/m perf criteria a
27-nov-08 dc-dc jch20 models and ratings notes 1. measured at nominal intput voltage. 2. maximum capacitive load is per output. mechanical details 2.00 (50.80) 2.00 (50.80) 0.60 (15.24) 0.80 (20.32) 0.60 (15.24) 0.90 (22.86) 0.20 (5.08) 0.90 (22.86) 0.60 (15.24) 0.40 (10.16) 0.40 (10.16) 0.60 (15.24) -vout com/no pin +vout bottom view vin + - 0.40 (10.16) dia. 0.04 (1.00) 0.20 (5.08) min application notes derating curve e44 -25.6;276; *:. 26 26,1.; 255a ).201< hfim 4+; 2rh 0a output po wer (%) ambient temperature (c) 100 75 50 25 -40 -20 0 20 40 60 80 100 120 125 input voltage output voltage output current input current (1) efficiency maximum capacitive load (2) model number no load full load l1ai msr e28 m d888 5o b8 5o b88i 5o ie& ae888 fu brvb8abh8e l28 m bbbb 5o b8 5o alf8 5o ie& bb88 fu brvb8abh8l ab28 m afff 5o c8 5o alf8 5o ih& a888 fu brvb8abhab ae28 m accc 5o ce 5o alid 5o ih& a88 fu brvb8abhae bd28 m icc 5o c8 5o alch 5o ii& fi8 fu brvb8abhbd de28 m db888 5o be 5o c8di 5o ie& a888 fu brvb8abs8e dl28 m daaaa 5o be 5o alid 5o ie& a888 fu brvb8abs8l dab28 m dicc 5o c8 5o b888 5o ih& a888 fu brvb8absab dae28 m dfff 5o ce 5o alid 5o ih& db8 fu brvb8absae dbd28 m ddaf 5o ce 5o alid 5o ii& cc8 fu brvb8absbd ai1cf msr e28 m d888 5o be 5o llb 5o if& ae88 fu brvb8bdh8e l28 m bbbb 5o b8 5o lfi 5o ih& fi88 fu brvb8bdh8l ab28 m afff 5o be 5o lei 5o ii& a888 fu brvb8bdhab ae28 m accc 5o be 5o hai 5o ii& a888 fu brvb8bdhae bd28 m icc 5o be 5o leh 5o il& fi8 fu brvb8bdhbd de28 m db888 5o be 5o a88d 5o if& fi88 fu brvb8bds8e dl28 m daaaa 5o be 5o li8 5o ih& bb88 fu brvb8bds8l dab28 m dicc 5o b8 5o abi8 5o ii& a888 fu brvb8bdsab dae28 m dfff 5o be 5o leh 5o ii& dh8 fu brvb8bdsae dbd28 m ddaf 5o c8 5o lfh 5o il& dh8 fu brvb8bdsbd cf1hb msr e28 m d888 5o b8 5o efb 5o if& ae888 fu brvb8dih8e l28 m bbbb 5o b8 5o dhi 5o ih& bb88 fu brvb8dih8l ab28 m afff 5o be 5o did 5o il& a888 fu brvb8dihab ae28 m accc 5o b8 5o dhi 5o il& a888 fu brvb8dihae bd28 m icc 5o be 5o dhl 5o la& cc8 fu brvb8dihbd de28 m db888 5o b8 5o dlf 5o if& bb88 fu brvb8dis8e dl28 m daaaa 5o b8 5o dl8 5o ih& a888 fu brvb8dis8l dab28 m dicc 5o b8 5o dhi 5o il& a888 fu brvb8disab dae28 m dfff 5o b8 5o dl8 5o il& dh8 fu brvb8disae dbd28 m ddaf 5o b8 5o dl8 5o la& bb8 fu brvb8disbd input filter l c2 c1 + vin - vin l = 12 h c1 = 68 f c2 = 33 f + -
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