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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? wide input range ? high power density ? wide trim range ? fixed frequency (300khz) ? remote on/off ? ocp/scp ? remote sense ? flexible output voltage sequencing ? converter can sink and source current ? over temperature protection ? ul60950-1 recognized (ul/cul) description the bel VRBC-10F2Ax modules are a series of non-isolated dc/dc converters that deliver up to 10 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). these modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. 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, wide input, 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 v - 3.63 v 1 2.4 v - 5.5 v 10 a 36.3 w 94% VRBC-10F2Al VRBC-10F2A0 notes : 1. these modules use a buck topology, so the output voltages must be 0.5 v less than the input voltage. 2. add ?g? to the end of the model number to indicate tray packaging. part number explanation v r bc ? 10 f 2a x 1 2 3 4 5 6 7 1--- vertical mount 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name, bobcat 4---series code, output current 10a 5--- input range (2.4-5.5v) 6---output voltage, wide trim 7---suffix, ?l? mean active low, ?0? mean active high v rbc-10f2ax rohs com p liant rev.b
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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. 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 sequencing voltage 1 -0.3 v - vin ambient temperature -40 c - 85 c storage temperature -55 c - 125 c notes : all specifications are typical at 25 c unless otherwise stated. 1. VRBC-10F2Ax series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. this is accomplished via an additional sequencing pin. when the sequencing feature is not used, tie the seq pin to vin or leave the seq pin floating. input specifications parameter min typ max notes input voltage 2.4 v - 5.5 v vo, set vin-0.5 v input current (full load) vo=3.3 v vo=1.8 v vo=0.75 v - - - 7.0 a 4.04 a 1.89 a 8.06 a 6.98 a 4.06 a input current (no load) - 80 ma - remote off input current - 15 ma 22 ma input reflected ripple current (pk-pk) - 120 ma - input reflected ripple current (rms) - 35 ma - tested with two 100uf/10v tantalum input capacitors (p/n: tpsc107k010r0075 avx) & simulated source impedance of 1 uh, 5hz to 20mhz. i 2 t inrush current transient - - 0.2 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=iomin to iomax line regulation - 0.3%vo,s et - vin=vinmin to vinmax regulation over temperature (-40 c to +85 c) - 0.5%vo,set - tref=tamin to tamax output current 0 a - 10 a current limit threshold 15 a - 30 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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. output specifications (continued) parameter min typ max notes short circuit surge transient - - 2 a 2 s ripple and noise (pk-pk) - 25 mv 50 mv ripple and noise (rms) - 8 mv 15 mv tested with 0-20mhz, 10uf/16v tantalum capacitor & 1uf/10v 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 1mohm esr 10mohm 0 uf 0 uf - - 1000 uf 4700 uf transient response 50% ~ 100% max load - 200 mv - settling time - 25 us - 100% ~ 50% max load - 200 mv - settling time all - 25 us - di/dt=2.5 a/us; vin=5 v; and with 10 uf/16 v tantalum capacitor & 1uf/10v ceramic capacitor at the output 50% ~ 100% max load - 120 mv - settling time - 50 us - 100% ~ 50% max load - 120 mv - settling time all - 50 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 nom inal input (vin=5 v), full load at 25 c unless otherwise stated. general specifications parameter min typ max notes efficiency vo=3.3 v vo=1.8 v vo=0.75 v 91% 86% 77% 94% 89% 80% - - - measured at vin=5 v, full load (current source) 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 - - 10% total adjustment of trim, setpoint and remote sense combined should not exceed 3.63 v. vo=0.7525 v when trim pin open mtbf 6,900,000 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 0.36 50.8 x 12.7 x 9.2 weight - 8.3g - 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. control specifications parameter min typ max notes signal low (unit off) -0.3 v - 0.3 v signal high (unit on) 1.5 v - 5.8 v VRBC-10F2A0; 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-10F2Al; remote on/off pin open, unit on. sequencing voltage 0.05 v - vin sequencing voltage applied on seq should be higher than output voltage. sequencing slew rate capability - - 2 v/ms sequencing delay time 10 ms - - delay from v in, min to application of voltage on seq pin tracking accuracy power-up power-down - - 100mv 200mv 200mv 400mv 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 rim v v rtrim module vo ut 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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. efficiency data 80.0% 82.0% 84.0% 86.0% 88.0% 90.0% 92.0% 94.0% 96.0% 98.0% 1.0 2.5 5.0 7.5 10.0 4.5v 5.0v 5.5v vo=3.3 v 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1.0 2.5 5.0 7.5 10.0 3.0v 5.0v 5.5v vo=1.8 v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 135810 2.4v 5.0v 5.5v 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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. thermal derating curves vin= 5.0 v, vo= 3.3 v vin= 5.0 v, vo= 1.8 v vin=5.0 v, vo=0.75 v vin=3.3 v, vo=0.75 v/1.8 v/2.5 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. ripple and noise waveforms vin=5 v, vo=0.75 v vin=5 v, vo=1.8 v vin=5 v, vo=3.3 v note: ripple and noise tested at 0-20 mhz bw, 10 uf/16 v tantalum capacitor and 1 uf/10 v ceramic capacitor, full load, 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. transient response waveforms 50% to 100% load step at vin=5 v, vo=0.75 v 100% to 50% load step at vin=5 v, vo=0.75 v 50% to 100% load step at vin=5 v, vo=1.8 v 100% to 50% load step at vin=5 v, vo=1.8 v 50% to 100% load step at vin=5 v, vo=3.3 v 100% to 50% load step at vin=5 v, vo=3.3 v note: transient response tested at di/dt=2.5 a/us, with 10 uf/16 v tantalum capacitor and 1 uf/10 v ceramic capacitor, 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 2.4 vdc - 5.5 vdc input 0.75 vdc - 3.63 vdc/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. mechanical outline pin connections pin function 1 vout 2 vout 3 remote sense 4 vout 5 ground 6 ground 7 vin 8 vin 9 seq 10 trim 11 remote on/off
? 2010 bel fuse inc. specifications subject to change without notice. 031910 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/10 a output mar. 19, 2010 bel power inc., a subsid iary of bel fuse inc. revision history date revision changes detail approval 2010-3-19 b 1. change to new datasheet format; 2. add part number explanation. xf rohs compliance complies with the european directive 2002/95/ec , calling for the elimination of lead and other hazardous substances from electronic products.
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