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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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. features ? non - isolated ? under v oltage protection ? high efficiency ? output over - voltage shutdown ? fixed frequency ? wide oper ating temperature range ? high power de n sity ? ocp/scp ? wide input ? power go o d signal ? remote sense ? 3 b it vid t rim ? 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 bel vrp1 - 30e 3 a x is part of the non - isolated dc / dc converter power module series. the module use s a sip package. th ese converter s are available output voltage trim via the 3 bit vi d range from 1.025 vdc to 1.2 vdc over a wide range of input voltage (vi n = 6.5 - 13.8 vdc).the efficiency is typically 82% @ 12vin and 1.2vout at full load. part selection output voltage input voltage max. output current max. output power typical effi ciency model number w ith l oad l ine model number w ithout l oad l ine 1.025 - 1.2 vdc 6.5 - 13.8 v dc 30 a 36 w 82 % vrp1 - 30e3a0 vrp1 - 30e3ad notes : add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation v r p 1 ? 3 0 e 3 a x 1 2 3 4 5 6 7 1 --- vertical mount 2 --- rohs 6, change ? r ? to ? 7 ? means rohs 5 3 --- series name, sip 4 --- series code , 30a output 5 --- wide input range ( 6 .5 - 13.8 v) 6 --- wide trim 7 --- suffix vrp 1 - 3 0 e 3 a x rohs compliant 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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes continuous non - operating input voltage - 0.3 - 15 v remote on/off - 0.3 - 1 5 v ambient temperat ure 0 - 70 ? c storage temperature - 40 - 125 ? c note: ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device. input specifications parameter min typ max unit notes operatin g input voltage 6 .5 12 13.8 v input current (full load) - - 7 a input current (no load) - 2 00 4 00 ma remote off input current - 2 0 - ma input reflected ripple current ( rms) - 3 0 50 ma input reflected ripple current (pk - pk) - 7 5 12 0 ma with simulated source impedance of 10uh, 5hz to 20mhz. use a 10 0 uf/100v electrolytic capacitor with esr=1 ohm max, at 200khz@25c. i 2 t inrush current transient - - 1 a 2 s turn - on voltage threshold 6.0 6 .2 6.5 v turn - off voltage threshold 5.3 5.5 5.7 v caut ion: this converter is not internally fused. an input line fuse must be used in application . r ecommend a fast - acti ng fuse with maximum rating of 1 5 a on system board. refer to the fuse manufacture ? s datasheet for further information. note: all specificati o ns are typical at 25 ? c unless otherwise stated . output specifications parameter min typ max unit notes output voltage set point 1.211 1.22 1. 229 v vid=000, io=0a load line - 6 - mohm vrp1 - 30e3a0 load regulation - 8 1 2 mv vrp1 - 30e3ad line regulation - 5 10 mv temperature regulation - 5 10 mv ripple and noise (pk - pk) - 4 0 6 0 mv ripple and noise ( rms ) - 25 35 mv 0 - 20mhz bw, 831uf cap on output. ripple and noise ( pk - pk) under worst case - - 80 mv over all operating input voltage , l oad and temperature conditions . output current range 0 - 3 0 a o u tput dc current limit - 12 0 - %iout ocp latch off turn on time - 10 15 ms
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. output specificati ons (continued) parameter min typ max unit notes rise time - 5 10 ms overshoot at turn on - - 5 % output capacitance - 831 - uf 470uf tan cap+1*1uf+4*10+ 6*22+4*47uf ceramic cap transient response overshoot - - 6 0 mv v50 %~ 75 % of max load settling time - - 5 0 us overshoot - - 6 0 mv v75 %~ 50 % of max load settling time - - 50 us di/dt= 2.5 a/us, vin=12.0vdc, ta= 25c, 831uf cap on output. note : all specifications are typical at nominal input, full load at 25c unless otherwise stated . general specifications parameter min typ max unit notes efficiency - 82 - % vin=12 .0v, full load switching frequency - 500 - khz weight - 1 0 . 2 - g fit 625 - calculated per bell core s r - 332 ( io= 80%load , t a = 25 ? c , fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 1.2 0 x 0.61 x 0. 65 30.4 8 x 15.49 x 1 6.52 - n ote : all specifications are typical at 25 ? c unless otherwise stated. efficiency data module 1.2v 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00% 70.00% 80.00% 90.00% 100.00% 3.0 10.0 15.0 20.00 24.00 30 output current e f f i c i e n c y 6.5v 12v 13.8v
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. thermal derating curves the thermal reference point tref is shown above. for reliable operation this temperature should not exceed 11 0 ? c . th e output power of the module should not exceed the rated power for the module. vin=12v , vo=1.2v
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. ripple and noise waveform 12vdc input, 1.2v output transient response waveforms vin=12v,vo=1.2v, 50%~75% load vin=12v,vo=1.2v,75%~50% load
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. startup & shutdown startup time startup from vin startup from on/off ch2: vo ch2: vo ch1: vin ch1: on/off v in=12v,vo=1.2v, full load with 831 uf cap vin=12v,vo=1.2v full load with 831 uf cap shutdown vin =12v, vo=1.2v, full load with 831 uf cap
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. remote o n/off parameter min typ max unit notes signal low (unit off) - 0.3 - 0. 4 v signal high (unit on) active high 2 - 5 .5 v the remote on/off pin open, unit o ff. current sink 0 - 1 ma recommended remo te on/off circuit for active high control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently o ff load line -0.210 -0.200 -0.190 -0.180 -0.170 -0.160 -0.150 -0.140 -0.130 -0.120 -0.110 -0.100 -0.090 -0.080 -0.070 -0.060 -0.050 -0.040 -0.030 -0.020 -0.010 0.000 0.010 0.020 0.030 0.040 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 load (a) o o u t p u t v o l t a g e d r o o p ( o f f s e t f r o m v i d ) vout typ vout max vout min vin + vin - on / off vin + vin - on / o ff vin + vin - on / off vcc vin + vin - on / off 6 m load line with 31.5 mv tolerance band for vrp1 - 30e3a0 only
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. output voltage set - point adjustment trim up circuit (using 3 bit vid: vid2, vid3 and vid4) note: vid [4:2] is set to 000b which will set vid=1.2v as default. input u nder - voltage l ockout vid hex vid7 vid6 vid5 vid4 vid3 vid2 vid1 vid0 dac voltage output vo ltage set point (dac+20mv, io=0a) 42 0 0 0 1.200v 1.220v 46 0 0 1 1.175v 1.195v 4a 0 1 0 1.150v 1.170v 4e 0 1 1 1.125v 1.145v 52 1 0 0 1.100v 1.120v 56 1 0 1 1.075v 1.095v 5a 1 1 0 1.050v 1.070v 5e 0 1 0 1 1 1 1 0 1.025v 1.045v v1= 5.33 v v2=6.02v input voltage ( v ) i n p u t c u r r e n t voltage falling voltage rising v 1 v 2 under - voltage lockout
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 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 sys tem layout and facilitates accu r ate 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 co mpensates for a maximum drop of 10% of the nominal output voltage. 3. if the unit is already trimmed up, the available remote sen se 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 compensatio n, affecting the stability and dynamic r esponse. 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+ ( 51. 1 ohm) from vo+ to sense+ and a resistor rs - (51 .1 ohm)) from vo - to sense - inside of this module. 6. if not using remote sense compensation, please connect 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. s ee below figure. sense + sense - r s - v o - vo + r s + load sense + sense - r s - vo - v o + r s + load
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. 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 volta ge pulled up externally on power good pin should not exceed 6 v. 4. when a successful soft - start is completed, the power good pin will be pulled high. ch 1 : output voltage ch 3: power good typical start - up using remote on/off(vin=12. 0v, vout=1.2v, io=30a) fundamental circuit diagram vin cin s1 s2 lf co on
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. layout layout of components on top side layout of components on bottom side
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. mechanical outline note: this module is recommended and compatible with pb - free wave solder ing and must be soldered using a peak solder temperature of no more than 26 0 oc for less th a n 5 seconds . note : 1 ) all pins: material - copper alloy ; finish ? 3 micro inches minimum gold over 50 m icro inches minimum nickel plate . 2 ) undimensioned compone nts are shown for visual reference only. 3 ) all dimensions in inches (mm) ; tolerances: x.xx +/ - 0.02 in. (x.x +/ - 0.5mm) x.xxx +/ - 0.010 in. (x.xx +/ - 0.25mm) . pin function pin function 1 gnd 8 vsense+ 2 gnd 9 vid2 3 vout 10 vid3 4 vout 11 vid4 5 vout 12 enable 6 pwrgd 13 vin 7 vsense - 14 gnd
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 6 .5 vdc - 13. 8 v dc input , 1.025 vdc - 1.2 vdc /30 a output mar . 0 7 , 20 11 bel power inc. , a subsidiary of bel fuse inc. signal definitions pin name pin description gnd common return for both input and output. vout output voltage of the converter. pwrgd pwrgd indicates that soft - start has completed and the output voltage is within the regulated range around vid setting. vsense - negative remote sense. vsense+ positive remote sense. vid2 vid3 vid4 logic level in puts used to set the output voltage , refer to vid table. connect vid0 thru vid1 pins to open - drain outputs with external pull - up resistors or to active - pull - up outputs. valid logic low is - 0.3v to 0.4v, valid logic high level is 0.8v to 5.3v. enable logic level input used to enable the converter when high. vin input voltage of the converter.
? 20 11 bel fus e inc. specifications subject to change without notice. 03 0 7 11 14 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 6.5 vdc - 13.8 v dc input , 1.025 vdc - 1.2 vdc/30 a output output converter mar . 0 7 , 20 1 1 bel powe r inc. , a subsidiary of bel fuse inc. revision history date revi sion changes detail approval 201 1 - 0 3 - 0 7 a first release yf sun rohs com p liance 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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