bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output ? non-isolated ? wide output trim range ? high efficiency ? output over-voltage shutdown ? fixed switching frequency ? ocp/scp ? low cost ? low output ripple ? excellent thermal performance ? power good signal ? wide input voltage range ? remote on/off description the VRP1-20E1A1 is a non-isolated dc/dc converter that operates over a wide range of input voltage (vin = 4.5 vdc ~ 13.8 vdc). this unit can provide a precisely regulated output voltage from 0.591 vdc to 5.1 vdc and can deliver up to 20 a of output current. this unit is designed to be highly efficient and low cost. the converter is provided in an industry standard package. part selection output voltage input voltage max. output current max. output power typical efficiency model number active high 0.591 vdc - 5.1 vdc 4.5 vdc - 13.8 vdc 20 a 100 w 94% VRP1-20E1A1 notes : 1. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 2. add ?g? suffix at the end of the model numbers listed above to indicate ?tray packaging?. absolute maximum ratings parameter min typ max notes input voltage (continuous) -0.3 v - 15 v output enable terminal voltage -0.3 v - 15 v ambient temperature 0 c - 70 c storage temperature -40 c - 125 c input specifications parameter min typ max notes input voltage vo 3.45 v vo 3.45 v 4.5 v 1.3*vo 12 v 12 v 13.8 v 13.8 v input current (full load) - - 20 a an input line fuse must always be used. input current (no load) - 150 ma 300 ma remote off input current - 50 ma - input reflected ripple current (pk-pk) - 50 ma 100 ma input reflected ripple current (rms) - 20 ma 40 ma use a 1000uf al-cap on the input. i 2 t inrush current transient - - 1 a 2 s turn-on voltage threshold - 4.2 v - turn-off voltage threshold - 3.9 v - a 30.1k resistor is connected from enable to vin note : all specifications are typical at 25 c unless otherwise stated. v rp1-20e1a1 rohs com p liant rev. a
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output output specifications parameter min typ max notes output voltage set point accuracy -1.5 % vo - +1.5 % vo vin=12 v, iout=half load load regulation - - 1% vo line regulation - - 0.5% vo regulation over temperature (0 c to +70 c) - - 1% vo output current 0 a - 20 a current limit threshold - 150% iomax - output ripple and noise (pk-pk) - 40 mv 80 mv output ripple and noise (rms) - 20 mv 40 mv test conditions: 0-20mhz bw, with a 1f ceramic capacitor and a 10uf tantalum cap at output. short circuit surge transient - 1 a 2 s 3 a 2 s turn on time - 2 ms 10 ms overshoot at turn on and off - - 5% output capacitance 0 uf - 1000 uf transient response 50% ~ 75% max load - 200 mv 300 mv settling time - - 50 us 75% ~ 50% max load - 200 mv 300 mv settling time v o =all - - 50 us test conditions: di/dt = 2.5 a/us; vin =12 v; with 10 uf tantalum cap and 1 uf ceramic at the output, ta=25 c note : all specifications are typical at 25 c unless otherwise stated. general specifications parameter min typ max notes efficiency vo=5.0 v vo=3.3 v vo=2.5 v vo=1.5 v vo=0.591 v - - - - - 94% 92% 90% 85% 70% - - - - - measured at vin=12 v, full load. switching frequency - 500 khz - output voltage trim range 0.591 v - 5.1 v remote sense compensation - - 0.2 v vin=12 v, io=full load. mtbf tbd calculated per bell core sr-332 (i o = 80%iomax; vin=12 v; t a = 25 c) dimensions inches (l w h) millimeters (l w h) 1.45 x 0.61 x 0.40 36.83 x 15.49 x 10.15 weight - 9.7 g - note : all specifications are typical at 25 c unless otherwise stated.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output control specifications parameter min typ max notes remote on/off (active high) signal low (unit off) -0.3 v - 0.4 v signal high (unit on) 2 v - 5.5 v remote on/off pin is open, unit is off. pwgood (powergood) 2.4 v - 6 v pwgood = high = power good - - 2 ma 0 v - 0.35 v pwgood = low = power not good - - 5 ma output trim equation the rtrim resistor should be connected between the trim pin and gnd pin. rtrim module vout gnd sense trim ? ? ? ? ? ? ? = 591 . 0 182 . 1 vo r trim k ?
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output efficiency data module 5v 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 98.0% 100.0% 0.0 2.0 5.0 10.1 15.0 20.00 output current efficiency 7v 12v 14v module 2.5v 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 0.0 2.0 5.0 10.0 15.0 20.0 output current efficiency 4.5v 12v 14v module 0.591v 40.0% 45.0% 50.0% 55.0% 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 0.0 2.0 5.0 10.0 15.0 20.0 output current efficiency 4.5v 12v 14v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output thermal derating curves vout=0.591v vout=1.2 v vout=2.5 v vout=3.3 v vout=5 v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output ripple and noise waveforms 12 vdc input, 0.591 vdc output 12 vdc input, 2.5 vdcoutput 12 vdc input, 5 vdc output note: ripple and noise at full load, 0-20 mhz bw, with a 10 uf tantalum cap and a 1 uf ceramic cap, and ta=25 deg c.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output transient response waveforms vout= 2.5 v 50%-75% load transients vout=2.5 v 75%-50% load transients vout= 5 v 50%-75% load transients vout=5 v 75%-50% load transients note: transient response at di/dt = 2.5 a/us, with 1 uf ceramic capacitor at the output, and ta=25 deg c.
? 2008 bel fuse inc. specifications subject to change without notice. 060508 corporate far east europe bel fuse inc. bel fuse ltd. bel fuse europe ltd. 206 van vorst street 8f/ 8 luk hop street preston technology management centre jersey city, nj 07302 san po kong marsh lane, suite g7, preston tel 201-432-0463 kowloon, hong kong lancashire, pr1 8ud, u.k. fax 201-432-9542 tel 852-2328-5515 tel 44-1772-556601 www.belfuse.com fax 852-2352-3706 fax 44-1772-888366 www.belfuse.com www.belfuse.com non-isolated dc/dc converters 4.5 vdc - 13.8 vdc input 0.591 vdc - 5.1 vdc/20 a output mechanical outline rohs compliance complies with the european dire ctive 2002/95/ec, calling for th e elimination of lead and other hazardous substances from electronic products. pin connections pin function 1 vout 2 trim+ 3 gnd 4 pwgood 5 enable 6 vin 7 sense+ 8 sense-
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