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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? over temperature protection ? high power density ? remote sense ? ocp/scp ? wide input ? fixed frequency (300 khz) ? wide trim range ? converter can sink and source current ? remote on/off ? active low/high (option) description the bel VRBC-16F1Ax modules are a series of non-isolated dc/dc converters that can deliver up to 16 a of output current with full load efficiency of 94% at 3.3 vdc output. these modules provide precisely regulated voltage programmable via external resistor from 0.75 vdc to 3.63 vdc over a wide range of input voltage (2.4 vdc - 5.5 vdc). their open-frame construction and small footprint enable designers to develop cost and space- efficient solutions. standard features include remote on/off, programmable output voltage and over current protection. part selection output voltage input voltage max. output current max. output power typical efficiency model number active low model number active high model number active low 0.75 v-3.63 v 1 2.4 v-5.5 v 16 a 58.1 w 94% VRBC-16F1Al VRBC-16F1A0 VRBC-16F1Aw 2 notes : 1. these modules use a buck topology, so the output voltages must be 0.8 v less than the input voltage. 2. change the last character ?l? to ?c? to indicate 0.20?? pin length. 3. ?w? indicates special coating. 4. add ?g? to the end of the model number to indicate tray packaging. 5. 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 - 5.8 v output enable terminal voltage -0.3 v - 5.8 v ambient temperature -40 c - 85 c storage temperature -55 c - 125 c note : all specifications are typical at 25 c unless otherwise stated. input specifications parameter min typ max notes input voltage vo 1.5 v vo=1.8 - 2.5 v vo=3.3 v 2.4 v 3.0 v 4.5 v - - - 5.5 v 5.5 v 5.5 v input current (full load) vo=3.3 v vo=1.8 v vo=0.75 v - - - 11.23 a 6.47 a 3.08 a 12.89 a 13.55 a 6.67 a v rbc-16f1ax series 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output input specifications (continued) parameter min typ max notes input current (no load) - 80 ma - remote off input current - 10 ma 22 ma input reflected ripple current (pk-pk) - 100 ma - input reflected ripple current (rms) - 40 ma - tested with two 100 uf / 10 v tantalum input capacitors (p/n: tpsc107k010r0075 avx) & simulated source impedance of 1 uh, 5 hz to 20 mhz. i 2 t inrush current transient - 0.15 a 2 s0.3 a 2 s turn-on voltage threshold - 2.2 v - turn-off voltage threshold - 2.0 v - note : all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max notes output voltage set point -2% vo,set - 2% vo,set vin=5 v, lo=lomax full load output voltage set point -3% vo,set - 3% vo,set over all operating input voltages, resistive loads and temperature conditions load regulation - 0.4% vo,set - io=io, min to io, max line regulation - 0.3% vo,set - vin=vin, min to vin, max regulation over temperature (-40 c to +85 c) - 0.5% vo,set - tref=ta, min to ta, max output current 0 a - 16 a current limit threshold 19 a - 35 a short circuit surge transient - 1.6 a 2 s 2 a 2 s ripple and noise (pk-pk) - 25 mv 50 mv ripple and noise (rms) - 8 mv 15 mv tested with 0-20 mhz, 10 uf / 16 v tantalum capacitor & 1 uf / 10 v tdk ceramic capacitor at the output turn on time - 4 ms 8 ms overshoot at turn on - 0% vo,set 3% vo,set output capacitance esr 1 mohm esr 10 mohm 0 uf 0 uf - - 1000 uf 5000 uf transient response 50% ~ 100% max load - 300 mv - settling time - 50 us - 100% ~ 50% max load - 300 mv - settling time v o =0.75 v - 3.3 v - 50 us - di/dt=2.5 a/us; vin=5 v; and with 10 uf / 16 v tantalum capacitor & 1 uf / 10 v ceramic capacitor at the output transient response 50% ~ 100% max load - 150 mv - settling time - 100 us - 100% ~ 50% max load - 150 mv - settling time v o =0.75 v - 3.3 v - 100 us - di/dt=2.5 a/us; vin=5 v; and with two 150 uf / 10 v tantalum capacitors & 1 uf / 10 v ceramic capacitor at the output note : all specifications are typical at nomin al input (vin = 5 v), 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output general specifications parameter min typ max notes efficiency vo=3.3 v vo=1.8 v vo=0.75 v 91% 86% 75% 94% 89% 78% - - - measured at vin=5 v, full load switching frequency 250 khz 300 khz 350 khz over temperature shutdown - 125 c - output trim range (wide trim) 0.7525 v - 3.63 v remote sense compensation - - 5% total adjustment of trim, setpoint and remote sense combined should not exceed 3.63 v. vo=0.7525 v when trim pin open mtbf 5,500,000 hours calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches (l w h) millimeters ( l w h ) 2.0 x 0.5 x 0.363 50.80 x 12.7 x 9.23 weight - 8.3 g - note : all specifications are typical at 25 c unless otherwise stated. control specifications parameter min typ max notes remote on/off signal low (unit off) -0.3 v - 0.3 v signal high (unit on) 1.5 v - 5.8 v VRBC-16F1A0; remote on/off pin open, unit on. signal low (unit on) -0.3 v - 0.3 v signal high (unit off) 1.5 v - 5.8 v VRBC-16F1Al & VRBC-16F1Aw; remote on/off pin open, unit on. output trim equations equation for calculating the trim resistor (in k ? ) given the desired adjusted voltage (vadj) is shown below. the trim up resistor should be connected between the trim pin and ground. 11 . 5 7525 . 0 07 . 21 ? ? = 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 ( 1698 . 0 7 . 0 ? ? = adj trim v v rtrim module vout gnd trim vtrim module vout gnd trim
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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output efficiency data 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 98.0% 1.6 4.0 8.0 12.0 16.0 4.5v 5.0v 5.5v vo=3.3 v 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1.6 4.0 8.0 12.0 16.0 2.4v 5.0v 5.5v vo=1.8 v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1.6 4.0 8.0 12.0 16.0 2.4v 5.0v 5.5 v vo=0.75 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output thermal derating curves vo=3.3 v vo=1.8 v vo=0.7525 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output ripple and noise waveforms vin=5.0 v, vo=0.75 v vin=5.0 v, vo=1.8 v vin=5.0 v, vo=3.3 v note: ripple and noise is tested at 0-20 mhz bw, 10 uf/16 v tantalum capacitor and 1uf/10 v ceramic capacitor, 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a output transient response waveforms 50% to 100% load step at vin=5.0 v, vo=0.75 v 100% to 50% load step at vin=5.0 v, vo=0.75 v 50% to 100% load step at vin=5.0 v, vo=1.8 v 100% to 50% load step at vin=5.0 v, vo=1.8 v 50% to 100% load step at vin=5.0 v, vo=3.3 v 100% to 50% load step at vin=5.0 v, vo=3.3 v note: transient response is tested at di/dt=2.5 a/us, with two 150 uf/10 v tantalum capacitor and 1 uf/10 v ceramic capacitor, ta=25 deg c.
? 2007 bel fuse inc. specifications subject to change without notice. 010407 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/16a 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 vout 2 vout 3 vo,sense 4 vout 5 ground 6 ground 7 vin 8 vin 9 n/a 10 trim 11 remote on/off
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