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 - 5.5 vdc/6 a output ? non-isolated ? under-voltage lockout (uvlo) ? high efficiency ? ocp/scp ? high power density ? wide input range ? fixed frequency ? wide trim range ? remote on/off ? active low/high (option) ? flexible output voltage sequencing description the bel VRBA-06A2Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 a of output current with full load efficiency of 92% at 5.0 vdc output. these modules provide precisely regulated voltage programmable via external resistor from 0.75 vdc to 5.5 vdc over a wide range of input voltage (8.3 vdc - 14 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, 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 - 5.5 v 8.3 v - 14 v 6 a 33 w 92% VRBA-06A2Al VRBA-06A2A0 notes: 1.change the last character ?l? to ?c? to indicate 0.20?? pin length. 2. add ?g? suffix at the end of the model number to indicate tray packaging. 3. 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 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. VRBA-06A2Ax 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. v rba-06a2ax 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 - 5.5 vdc/6 a output input specifications parameter min typ max notes input voltage 8.3 v 12 v 14 v input current (full load) vo=5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=0.75 v - - - - - 2.75 a 1.85 a 1.45 a 1.05 a 0.55 a 4.0 a 2.8 a 2.2 a 1.6 a 0.8 a input current (no load) vo=5.0 v vo=0.75 v - - - - 100 ma 20 ma remote off input current - 1 ma 2 ma input reflected ripple current (pk-pk) - 120 ma - input reflected ripple current (rms) - 40 ma - tested with two 100 uf/25 v tantalum input capacitors & simulated source impedance of 1uh, 5 hz to 20 mhz. i 2 t inrush current transient - 0.002 a 2 s 0.02 a 2 s turn-on voltage threshold - 8.1 v 8.2 v turn-off voltage threshold - 7.5 v 8.0 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=12 v, lo=lomax output voltage set point -2.5%vo,set - 3.5%vo,set over all operating input voltages, resistive loads and temperature conditions adjustment range selected by external resistor or voltage 0.7525 v - 5.5 v load regulation -0.5%vo,set 0.4%vo,set 0.5%vo,set io=io, min to io, max line regulation -0.4%vo,set 0.3%vo,set 0.4%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 - 6 a current limit threshold 7.2 a - 18 a short circuit surge transient - 0.25 a 2 s - ripple and noise (pk-pk) vo=0.75 v vo=3.3 v vo=5.0 v - - - 20 mv 60 mv 75 mv - - - ripple and noise (rms) vo=0.75 v vo=3.3 v vo=5.0 v - - - 7 mv 20 mv 25 mv - - - tested with 0-20 mhz, with 10 uf/10 v tantalum capacitor & 1uf/10 v tdk ceramic capacitor at the output. turn on time - 8 ms 10 ms overshoot at turn on - 0% 3% output capacitance esr 1mohm esr 10mohm 0 uf 0 uf - - 1000 uf 3000 uf
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 - 5.5 vdc/6 a output output specifications (continued) parameter min typ max notes transient response 50% ~ 100% max load - 200 mv - settling time - 50 us - 100% ~ 50% max load - 200 mv - settling time v o = 0.75 v - 5.5 v - 50 us - di/dt=2.5 a/us; vin=12 v; and with 10 uf/10 v tantalum capacitor & 1 uf/10 v ceramic capacitor at the output. note : all specifications are typical at nomin al input (vin=12 v), full load 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=1.8 v vo=0.75 v 87% 85% 82% 80% 68% 90% 88% 85% 83% 71% - - - - - measured at vin=12 v, full load switching frequency 250 khz 300 khz 350 khz over temperature shutdown - 135 c - output trim range (wide trim) 0.7525 v - 5.5 v mtbf 3,266,517 hours calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches (l w h) millimeters ( l w h ) 1 x 0.5 x 0.243 25.4 x12.7 x 6.16 weight - 3 g - note : all specifications are typical at 25 c unless otherwise stated. control specifications parameter min typ max notes signal low (unit off) -0.3 v - 0.4 v signal high (unit on) 2.5 v - 14 v VRBA-06A2A0; remote on/off pin open, unit on. signal low (unit on) -0.3 v - 0.4 v signal high (unit off) 2.5 v - 14 v VRBA-06A2Al; remote on/off pin open, unit on. sequencing voltage 0 v - vin sequencing voltage applied on seq pin should be higher than output voltage. sequencing slew rate capability - - 2 v/ms sequencing delay time 10 ms - - delay from vin, min to application of voltage on seq pin tracking accuracy power-up power-down - - 100 mv 200 mv 200 mv 400 mv
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 - 5.5 vdc/6 a output 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. 1 7525 . 0 507 . 10 ? ? = 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 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 8.3 vdc - 14 vdc input 0.75 vdc - 5.5 vdc/6 a output efficiency data module 5.0v 75.0% 80.0% 85.0% 90.0% 95.0% 100.0% 1a 2a 3a 4a 5a 6a output current efficiency 8.3 12.0 14.0 module 3.3v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1a 2a 3a 4a 5a 6a output current efficiency 8.3v 12.0v 14.0 v module 2.5v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1a 2a 3a 4a 5a 6a output current efficiency 8.3v 12.0v 14.0v module 1.8v 60.0% 65.0% 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% 1a 2a 3a 4a 5a 6a output current efficiency 8.3v 12.0v 14.0v module 0.75v 50.0% 60.0% 70.0% 80.0% 90.0% 1a 2a 3a 4a 5a 6a 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 - 5.5 vdc/6 a output thermal derating curves vin=12 v, vo=0.75 v vin=12 v, vo=2.5 v vin=12 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 - 5.5 vdc/6 a output ripple and noise waveforms ripple and noise at full load, vin=12 v, vo=0.75 v ripple and noise at full load, vin=12 v, vo=1.2 v ripple and noise at full load, vin=12 v, vo=1.8 v ripple and noise at full load, vin=12 v, vo=2.5 v ripple and noise at full load, vin=12 v, vo=3.3 v ripple and noise at full load, vin=12 v, vo=5.0 v note: the output ripple and noise is tested at 0-20 mhz bw, 10 uf/10 v tantalum capacitor and 1 uf/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 8.3 vdc - 14 vdc input 0.75 vdc - 5.5 vdc/6 a output transient response waveforms 50% to 100% load step at vin=12 v, vo=0.75 v 100% to 50% load step at vin=12 v, vo=0.75 v 50% to 100% load step at vin=12 v, vo=1.2 v 100% to 50% load step at vin=12 v, vo=1.2 v 50% to 100% load step at vin=12 v, vo=1.8 v 100% to 50% load step at vin=12 v, vo=1.8 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 - 5.5 vdc/6 a output transient response waveforms (continued) 50% to 100% load step at vin=12 v, vo=2.5 v 100% to 50% load step at vin=12 v, vo=2.5 v 50% to 100% load step at vin=12 v, vo=3.3 v 100% to 50% load step at vin=12 v, vo=3.3 v 50% to 100% load step at vin=12 v, vo=5.0 v 100% to 50% load step at vin=12 v, vo=5.0 v note: transient response is tested at di/dt=2.5 a/us, with 10 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. 011207 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 - 5.5 vdc/6 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 vout+ 2 trim 3 ground 4 seq 5 vin+ 6 remote on/off
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