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bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 1 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. features ? non-isolated ? wide input voltage range (5vdc-13.8vdc) ? high efficiency ? output voltage trim (0.6vdc-5vdc) ? fixed switching frequency ? output overvoltage shut down ? power good signal ? ocp/scp ? low output ripple ? excellent thermal performance ? remote on/off ? low cost ? class 1, category 2, non-isolated dc/dc converter (refer to ipc-9592) applications ? networking ? computers and peripherals ? telecommunications description the XRP2-50E3A0 is a non-isolated dc/dc converter that operates over a wide range of input voltage (vin = 5 vdc-13.8 vdc). this unit can provide a precisely regulated output voltage from 0.6 vdc to 5.0 vdc and can deliver up to 50 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 (vo=1.8 vdc) model number active high model number active high 0.6 v - 5 v 5 v - 13.8 v 50 a 250 w 88.8% vrp2-50e3a0 0rp2-50e3a0 notes: add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation v r p2 ? 50 e 3a 0 1 2 3 4 5 6 7 1---vertical mount, change ?v? to ?0? means through hole mount 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name, sip 4---series code, 50a output 5--- wide input range (5-13.8v) 6---wide output range (0.6-5v) 7---enable, active high XRP2-50E3A0 rohs com p liant preliminary rev. a
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 2 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. absolute maximum ratings parameter min typ max unit notes continuous input voltage -0.3 - 15 v remote on/off -0.3 - 15 v ambient temperature 0 - 70 c storage temperature -55 - 125 c note: ratings used beyond the maximum ratings may caus e a reliability degradation of the converter or may permanently damage the device. input specifications parameter min typ max unit notes operating input voltage vo 2.8 v vo > 2.8 v 5 1.8*vo 12 12 13.8 13.8 v v input current (full load) - - 32.0 a input current (no load) - 200 400 ma remote off input current - 30 50 ma input reflected ripple current (rms) - 5 8 ma input reflected ripple current (pk-pk) - 20 35 ma with simulated source impedance of 10 uh, 5 hz to 20 mhz. use a 1000 uf/16 v electrolytic capacitor with esr=0.1 ohm max, at 100 khz at 25c. i 2 t inrush current transient - - 1 a 2 s turn-on voltage threshold - 4.6 4.8 v turn-off voltage threshold 3.9 4.1 - v note: all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max unit notes output voltage set point vo 1 v vo 1 v -1.5 -10 - - +1.5 +10 %vo mv vin=vinmin, io=iomax load regulation vo 2.5 v vo 2.5 v - - - - 0.6 12 %vo mv line regulation vo 2.5 v vo 2.5 v - - - - 0.3 9 %vo mv regulation over temperature (-40 deg.c-85deg.c) - - 0.02 %vo/c ripple and noise (pk-pk) vo=5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.2 v vo=0.6 v - - - - - - 55 50 50 50 40 25 110 100 100 90 80 60 mv mv mv mv mv mv test conditions: 0-20mhz bw, with a 1f ceramic capacitor and a 10 uf tantalum cap at output.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 3 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. output specifications (continued) parameter min typ max unit notes ripple and noise (rms) vo=5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.2 v vo=0.6 v - - - - - - 10 12 12 12 10 8 30 35 25 25 25 25 mv mv mv mv mv mv test conditions: 0-20mhz bw, with a 1f ceramic capacitor and a 10 uf tantalum cap at output. ripple and noise (pk-pk) under worst case - - 150 mv over all operating input voltage, load and ambient temperature condition output current range 0 - 50 a output dc current limit 55 65 75 a rise time 1 - 2 ms - 4 7 ms enable form vin turn on time - 4 7 ms enable form on/off overshoot at turn on - 0 3 % output capacitance 0 - 4700 uf transient response overshoot - 200 300 mv v50%~100% of max load settling time - 50 100 us overshoot - 200 300 mv v100%~50% of max load settling time - 50 100 us test conditions: di/dt=2.5a/us, vin=12vdc, vo=1.5vdc, ta=25c, with a 1f ceramic capacitor and a 10uf tantalum cap at output. note: all specifications are typical at nominal inpu t, full load at 25c unless otherwise stated. general specifications (continued) parameter min typ max unit notes efficiency vo=5.0 v vo=1.8 v vo=0.6 v 92 86 72 94.2 88.8 74 - - - % % % vin=12v, full load switching frequency - 330 - khz over voltage protection - 125 130 %vo weight - 25 - g dimensions inches (l w h) millimeters (l w h) 1.45 x 1.1 x 0.783 36.83 x 27.94 x 19.89 - through hole mount 0rp2-50e3a0 dimensions inches (l w h) millimeters (l w h) 1.45 x 1.1 x 0.743 36.83 x 27.94 x 18.87 - vertical mount vrp2-50e3a0 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 4 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. efficiency data efficiency curve vo=0.6 v 50.0% 55.0% 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 5 12.5 25 37.5 50 output current (a) efficienc y 5 v 12 v 13.8 v efficiency curve vo=1.2 v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 5 12.5 25 37.5 50 output current (a) efficienc y 5 v 12 v 13.8 v efficiency curve vo=1.8 v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 5 12.5 25 37.5 50 output current(a) efficienc y 5 v 12 v 13.8 v efficiency curve vo=2.5 v 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 5 12.52537.550 output current (a) efficienc y 5 v 12 v 13.8 v efficiency curve vo=3.3 v 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 5 12.5 25 37.5 50 output current(a) efficienc y 6 v 12 v 13.8 v efficiency curve vo=5.0 v 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 5 12.5 25 37.5 50 output current(a) efficienc y 9 v 12 v 13.8 v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 5 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. ripple and noise waveforms 12 vdc input, 0.6 vdc/50 a output 12 vdc input, 1.2 vdc/50 a output 12 vdc input, 1.8 vdc/50 a output 12 vdc input, 2.5 vdc/50 a output 12 vdc input, 3.3 vdc/50 a output 12 vdc input, 5.0 vdc/50 a output note: ripple and noise at full load, 12 vdc input 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 6 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. transient response waveforms vout= 0.6 v 0%-50% load transient vout=0.6 v 50%-0% load transient vout=1.2 v 0%-50% load transient vout=1.2 v 50%-0% load transient vout=1.8 v 0%-50% load transient vout=1.8 v 50%-0% load transient
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 7 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. transient response waveforms (continued) vout= 2.5 v 0%-50% load transient vout=2.5 v 50%-0% load transient vout=3.3 v 0%-50% load transient vout=3.3 v 50%-0% load transient vout=5 v 0%-50% load transient vout=5 v 50%-0% load transient note: transient response at vin=12 v, di/dt =2.5 a/us, 1uf ceramic cap and 10uf aluminum cap at output, 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 8 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. startup & shutdown rise time startup time shutdown test condition: 12vdc input, 5vdc/50a output, ta=25 deg c startup from vin ch1: vo ch2: vin test condition: 12vdc input, 5vdc/50a output, ta=25 deg c startup from on/off ch1: vo ch2: on/off test condition: 12vdc input, 5vdc/50a output, ta=25 deg c test condition: 12vdc input, 5vdc/0a output, 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 9 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. control specifications parameter min typ max unit notes remote on/off (active high) signal low (unit off) -0.3 - 0.8 v signal high (unit on) 2 - vin,max v remote on/off pin is open, unit is off. current source/sink 0 - 3.3 ma recommended remote on/off circuit for active high control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently on output trim equations equations for calculating the trim resistor are shown below. the trim up resistor should be connected between the trim+ pin and trim- pin. maximum duty cycle is 65%. minimum trim down voltage is 0.6v maximum trim up voltage is 5v. the total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. the resistor trim equation: the voltage trim equation: 1.2 () 0.6 trim rk vo = ? module vout trim+ trim? rtrim () () 1 2 1 1.2 2 () 0.6 1.2 trim trim trim trim rv rk rvo ? = ?? trim+ + - v trim trim- rtrim1 rtrim2 vin+ vin- on/off vcc vin+ vin- on/off vc c vin+ vin- on/off vin+ vin- on/off vcc
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 10 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. remote sense this module has remote sense compensation feature. it can minimize the effects of resistance between module?s output and load in system layout and facilitates accurate voltage regulation at load terminals or other selected point. 1. the remote sense lines carries very little current and hence do not require a large cross-sectional area. 2. this module compensates for a maximum drop of 10% of the nominal output voltage. 3. if the unit is already trimmed up, the available remote sense compensation range should be correspondingly reduced. the total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. 4. when using remote sense compensation, all the resistance, parasitic inductance and capacitance of the system are incorporated within the feedback loop of this module. it can make an effect on the module's compensation, affecting the stability and dynamic response. a 0.1uf ceramic capacitor can be connected at the point of load to de-couple noise on the sense wires. 5. recommend the connection of remote sense compensation as below figure. there are a resistor rs+ (100 ohm) from vo+ to sense+ and a resistor rs- (51 ohm)) from vo- to sense- inside of this module. 6. if not using remote sense compensation, please connec t sense directly to output at module's pin, that is, connect sense+ to vo+ and sense- to vo- at module's pin, the shorter the better. see below figure. sense+ sense- rs- vo- vo+ rs+ load sense+ sense- rs- vo- vo+ rs + load
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 11 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. over current protection to provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting for a few mili-secon ds. if the over current condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 12ms. the module operates normally when the output current goes into specified range. the typical average output current is 3a during hiccup. vout= 0.6v, vin=12v@ta=25 vout= 5.0v , vin=12v @ ta=25 expansion of on time portion of above figure
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 12 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. input under-voltage lockout power good 1. this module has a power good indicator output. power good pin used positive logic and is open collector. 2. power good pin can sink 10ma. 3. the maximum voltage pulled up externally on power good pin should not exceed 5.3v. 4. when the output reaches 90% of the nominal se t-point, the power good pin will be pulled high. v1=4.1v v2=4.6v input voltage (v) i n put c u r r e n t voltage falling voltage rising v1 v2 under- voltage lockout typical start-up using remote on/off vin=12.0v, vout=0.6v, io=50a ch1: output voltage ch3: pg typical start-up using remote on/off vin=12.0v, vout=5v, io=50a ch1: output voltage ch3: pg
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 13 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. mechanical outline 0rp2-50e3a0 pin connections pin function pin function 1 vout 9 pwgood 2 vout 10 sense- 3 vout 11 sense+ 4 gnd 12 vin 5 gnd 13 vin 6 enable 14 gnd 7 trim- 15 gnd 8 trim+
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 14 non-isolated dc/dc converters 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subsidiary of bel fuse, inc. mechanical outline (continued) vrp2-50e3a0 note: this module is recommended and compatible with pb-free wave soldering and must be soldered using a peak solder temperature of no more than 26 0 oc for less than 5 seconds. note: 1) all pins: material - copper alloy; finish ? 3 micro inches minimum gold over 50 micro inches minimum nickel plate. 2) undimensioned components are shown for visual reference only. 3) all dimensions in inches (mm); tolerances: x.xx +/-0.0 2 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm). pin connections pin function 1 vout 2 vout 3 vout 4 gnd 5 gnd 6 enable 7 trim- 8 trim+ 9 pwgood 10 sense- 11 sense+ 12 vin 13 vin 14 gnd 15 gnd
? 2010 bel fuse inc. specifications subject to change without notice. 110210 15 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 5 vdc - 13.8 vdc input 0.6 vdc - 5 vdc/50 a output nov. 02, 2010 bel power, inc. , a subs idiary of bel fuse, inc. revision history date version changes detail approval 2010-11-02 pa first release xf jiang rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products.

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