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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 non-isolated dc/dc converters 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? over temperature protection ? high power density ? ocp/scp ? excellent thermal performance ? wide input ? low cost ? wide trim ? flexible output voltage ? remote on/off ? able to sink & source current ? active low/high (option) ? industrial temperature range ? remote sense description the bel SRBC-16A1Ax modules are a series of non-isolated dc/dc converters that deliver up to 16 a of output current with full load efficiency of 92% at 3.3 vdc output. these modules provide precisely regulated voltage programmable via external resistor from 0.75 vdc to 5.0 vdc over a wide range of input voltage (8.4 vdc -14 vdc). the open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. standard features include remote on/off, remote sense, over current protection, short current protection, and programmable output voltage. part selection output voltage input voltage max. output current max. output power typical efficiency model number active low model number active high 0.75 vdc- 5.0 vdc 8.3 vdc -14 vdc 16 a 80 w 94% SRBC-16A1Al SRBC-16A1A0 notes : 1.add ?g? suffix at the end of the model number to indicate tray packaging. 2. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 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 -40 c - 85 c storage temperature -55 c - 125 c note : all specifications are typical at 25 c unless otherwise stated. SRBC-16A1Ax 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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output input specifications parameter min typ max notes input voltage vo, set 3.63 v vo, set > 3.63 v 8.3 v 8.3 v 12 v 12 v 14.0 v 13.2 v input current (full load) - - 11 a this power module is not internally fused. an input line fuse must always be used. input current (no load) - 100 ma - remote off input current - 2 ma - input reflected ripple current (pk-pk) - 70 ma 200 ma input reflected ripple current (rms) - - 150 ma tested with one 1000 uf/25 v al input capacitor with esr=0.03 ohm max and 6 47 uf/16 v tantalum capacitors with esr=0.013 ohm max at 100 khz, & simulated source impedance of 1000 nh, 5 hz to 20 mhz. i 2 t inrush current transient - 0.2 a 2 s 0.4 a 2 s turn-on voltage threshold - 8.0 v - turn-off voltage threshold - 7.5 v - output specifications parameter min typ max notes output voltage set point -2% vo,set - 2% vo,set vin=12 v, full load load regulation - 0.1% vo,set - io=io, min to io, max line regulation - 0.1% vo,set - vin=vin, min to vin, max regulation over temperature (-40 c to+85 c) - 0.3% vo,set - tref=ta, min to ta, max output current 0 a - 16 a current limit threshold - 180% io,out - short circuit surge transient - 1 a 2 s 3 a 2 s ripple and noise (pk-pk) - 75 mv 100 mv ripple and noise (rms) - 30 mv 45 mv tested with 0-20 mhz, 10 uf tantalum capacitor & 1 uf tdk ceramic capacitor at the output turn on time - 6 ms 10 ms overshoot at turn on - - 1% vo,set output capacitance esr 10 mohm 0 uf - 5000 uf transient response 50% ~ 100% max load - 100 mv - settling time - 50 us - 100% ~ 50% max load - 100 mv - settling time v o =0.75 v - 5.0 v - 50 us - di/dt=2.5 a/us; vin=12 v; and with 2 150 uf polymer capacitors at the output note : all specifications are typical at nominal input, full load 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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output general specifications parameter min typ max notes efficiency vo=5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v vo=0.75 v - - - - - - - 94% 92% 90% 88% 87% 85% 79% - - - - - - - measured at vin=12 v, full load switching frequency 265 khz 300 khz 335 khz over temperature shutdown 1 - 130 c - output trim range (wide trim) 0.7525 v - 5.0 v remote sense compensation - - 0.5 v mtbf 2,666,488 hours calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches (l w h) millimeters (l w h) 1.30 x 0.53 x 0.315 33.02 x 13.46 x 8.00 weight - 8 g - notes : all specifications are typical at 25 c unless otherwise stated. 1. the tref temperature measurement location: control specifications parameter min typ max notes remote on/off signal low (unit off) -0.2 v - 0.3 v signal high (unit on) - - vin, max SRBC-16A1A0; remote on/off pin open, unit on. signal low (unit on) -0.2 v - 0.3 v signal high (unit off) 2.5 v - vin, max SRBC-16A1Al; remote on/off pin open, unit on.
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output remote enable specifications output trim equations equation for calculating the trim resistor (in ? ) given the desired adjusted voltage (vadj) is shown below. the trim up resistor should be connected between the trim pin and ground. 1000 7525 . 0 10500 ? ? = adj trim v r equation for calculating the trim voltage (in v) given the desired adjusted voltage (vadj) is shown below. the trim up voltage should be connected between the trim pin and ground. ) 7525 . 0 ( 0667 . 0 7 . 0 ? ? = adj trim v v vtrim module vout gnd sense trim rtrim module vout gnd sense trim the SRBC-16A1Al modules feature an enable pin with negative logic. if not using the enable pin, leave the pin open (the module will be on). during logic_high, the module is turned off, during logic_low, the modu le is turned on. it inner circuit impedance is showed as figure. the SRBC-16A1A0 modules feature an enable pin with positive logic. if not using the enable pin, leave the pin open (the module will be on). during logic_high, the module is turned on, during logic_low, the module is turned off. it inner circuit impedance is showed as figure. SRBC-16A1Al SRBC-16A1A0
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output thermal derating curves vo=0.75 v vo=1.8 v vo=3.3 v vo=5.0 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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output efficiency data module 5.0v 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 98.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 13.2v module 3.3v 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v module 2.5v 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v module 1.8v 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v module 1.5v 78.0% 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v module 1.2v 76.0% 78.0% 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v module 0.75v 50.0% 55.0% 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 output current efficiency 8.3v 12.0v 14.0v
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output ripple and noise waveforms ripple and noise at max load 0.75 vdc output ripple and noise at max load 1.2 vdc output ripple and noise at max load 1.5 vdc output ripple and noise at max load 1.8 vdc output ripple and noise at max load 2.5 vdc output ripple and noise at max load 3.3 vdc output .
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output ripple and noise waveforms (continued) ripple and noise at max load 5.0 vdc output note: ripple and noise at 12 v input, with 10 uf tantalum capacitor and 1 uf ceramic capacitor at the output, and ta=25 deg c. transient response waveforms transients 50% to 100% load 0.75 vdc output transients 100% to 50% load 0.75 vdc output
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output transient response waveforms (continued) transients 50% to 100% load 1.2 vdc output transients 100% to 50% load 1.2 vdc output transients 50% to 100% load 1.5 vdc output transients 100% to 50% load 1.5 vdc output transients 50% to 100% load 1.8 vdc output transients 100% to 50% load 1.8 vdc output
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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output transient response waveforms (continued) transients 50% to 100% load 2.5 vdc output transients 100% to 50% load 2.5 vdc output transients 50% to 100% load 3.3 vdc output transients 100% to 50% load 3.3 vdc output transients 50% to 100% load 5.0 vdc output transients 100% to 50% load 5.0 vdc output note: transient response at 12 v input, di/dt=2.5 a/us, with external 2 x 150 uf polymer capacitor at the output, ta=25 deg c.
? 2007 bel fuse inc. specifications subject to change without notice. 011507 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 8.3 vdc - 14 vdc input 0.75 vdc - 5.0 vdc/16 a output mechanical outline rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products. pin connections pin function 1 remote on/off 2 vin 3 n/a 4 ground 5 vout 6 trim 7 remote sense bottom view recommended pad layout pad size: min: 0.14"* 0.095" (3.56mm * 2.41mm) max: 0.165"* 0.11" (4.19mm * 2.79mm)

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