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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 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. ? isolated ? over temperature protection ? fixed frequency (250 khz) ? scp/ocp ? high efficiency ? low cost ? high power density ? remote on/off ? input under-voltage lockout ? basic isolation ? input over-voltage lockout ? output over-voltage shutdown ? positive/negative remote sense ? output voltage trim ? class 2, category 2, isolated dc/dc converter (refer to ipc-9592) applications ? networking ? computers and peripherals ? telecommunications description the 0RQB-C5T14x is an isolated dc/dc converter that operate from a nominal 48v source. this unit will provide up to 140w of output power from a nominal 48v input. this unit is designed to be highly efficient and low cost . features include remote on/off, over current protection and overvoltage protection. the converter is provided in an industry standard quarter brick package. part selection output voltage input voltage max. output current max. output power typical efficiency model number active high model number active low 14 vdc 36 vdc - 75vdc 10 a 140 w 93.5% 0RQB-C5T140 0RQB-C5T14l note: add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r qb ? c5 t 14 x 1 2 3 4 5 6 7 1---through hole 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name 4---series code 5---input range (36-75v) 6---output voltage (14v) 7---suffix 0RQB-C5T14x rohs compliant preliminary
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 2 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes continuous non-operating input voltage -0.3 - 80 v input transient voltage - - 100 v 100ms maximum remote on/off -0.3 - 18 v i/o isolation voltage - - 1500 v ambient temperature -40 - 85 c storage temperature -55 - 125 c note: ratings used beyond the maximum ratings may caus e a reliability degradation of the converter or may permanently damage the device. input specifications parameter min typ max unit notes operating input voltage 36 48 75 v input current (full load) - - 5.0 a vin=36 v input current (no load) - 80 120 ma remote off input current - 10 20 ma input reflected ripple current (pk-pk) - 35 50 ma input reflected ripple current (rms) - 10 15 ma with simulated source impedance of 10 uh, 5 hz to 20 mhz; use a 1uf/100v ceramic capacitor and a 100uf/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 34.5 35.5 v turn-off voltage threshold 32.5 33.5 v caution: this converter is not internally fused. an input line fuse must be used in application. recommend a fast-acting fuse with maximum rating of 7a on system board. refer to the fuse manufacture?s datasheet for further information. notes: 1. this converter has internal c-l-c (0.47uf-0.47uh-8.8uf) filter. 2. all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max unit notes output voltage set point 13.72 14 14.28 v vin=48v, io=50% load at 25c ambient. load regulation - 14 28 mv line regulation - 14 28 mv regulation over temperature (-40deg.c-85deg.c) - 70 140 mv ripple and noise (pk-pk) - 120 180 mv ripple and noise (rms) - 25 50 mv 0 - 20 mhz bw, with 1 uf ceramic load capacitor and a 10 uf tantalum capacitor at output
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 3 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. output specifications (continued) parameter min typ max unit notes output ripple and noise(pk-pk) under worst case 220 mv over all operating input voltage, load and ambient temperature condition output current range 0 10 a output dc current limit 10.5 12 14 a short circuit surge transient 5 a 2 s rise time 6 12 ms 30 60 ms enable from vin turn on time 25 50 ms enable from on/off overshoot at turn on 0 3 % output capacitance 0 680 uf transient response overshoot - 400 600 mv v25%~50% of max load settling time - 200 300 us overshoot - 400 600 mv v50%~25% of max load settling time - 200 300 us di/dt=0.1a/us, vin=48 vdc, with a 1 f ceramic capacitor and a 10 uf tantalum capacitor at output, ta=25 c. note: all specifications are typical at nominal inpu t, full load at 25c unless otherwise stated. general specifications parameter min typ max unit notes efficiency 91.5 93.5 - % vin=48v, full load, ta=25c switching frequency - 250 - khz over temperature protection - 125 - c over voltage protection(static) - 17 - v this voltage is achieved by trimming up output slowly weight - 48 - g fit tbd - calculated per bell core sr-332 (vin=48v, vo=12v, io=9.6a, t a = 25 c, fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2.30 x 1.45 x 0.50 58.42 x 36.83 x 12.69 - isolation characteristics input to output - - 1500 v input to case - - 1500 v output to case - - 500 v isolation resistance 10m - - ohm isolation capacitance - 3900 - pf 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 4 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. efficiency data thermal derating curve maximum junction temperature of semiconductors derated to 120 degree c. 70.00% 75.00% 80.00% 85.00% 90.00% 95.00% 1a 2.5a 5a 7.5a 10a output current(a) efficiency 36 v 48 v 75v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 5 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. thermal derating curve (continued) derating curve under 48v input ripple and noise waveform note: ripple and noise at full load, 48vdc input, 14vdc/10a output and ta=25 deg c, and with a 1uf ceramic cap and a 10 uf tantalum cap at output. . vin=24v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 6 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. transients responses waveforms vout= 14v 25%-50% load transients at vin=48v@ta=25 vout= 14v 50%-25% load transients at vin=48v@ta=25 note: transients response at di/dt=0.1 a/us, with a 1 f ceramic capacitor and a 10 uf tantalum capacitor at the output, 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 7 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. remote on/off parameter min typ max unit notes signal low (unit on) -0.3 - 0.8 v signal high (unit off) active low 2.4 - 18 v 0RQB-C5T14l. the remote on/off pin open, unit off. signal low (unit off) -0.3 - 0.8 v signal high (unit on) active high 2.4 - 18 v 0RQB-C5T140. the remote on/off pin open, unit on. current sink 0 - 1 ma recommended remote on/off circuit for active low control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently on remote on/off(continued) recommended remote on/off circuit for active high control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently on vin+ vin- on/off vin+ vin- on/off vin+ vin- on/off vcc vin+ vin- on/off vin+ vin- on/off vin+ vin- on/off vin+ vin- on/off vcc vin+ vin- on/off
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 8 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. output trim equations equations for calculating the trim resistor are shown below. the trim down resistor should be connected between the trim pin and sense (-) pin. the trim up resistor should be connected between the trim pin and the sense (+). only one of the resistors should be used for any given application. minimum trim down voltage is 12.6v maximum trim up voltage is 15.4v. the total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. note: vo_req=desired (trimmed) output voltage [v] output voltage vo=14.000 v [] ? = k delta rtrimdown 22 . 10 511 [] ? ? ? ? ? + = k delta vo delta rtrimup 22 . 10 225 . 1 626 11 . 5 ) 100 ( module sense(+) trim sense(-) rtrimdo wn module sense(+) trim sense(-) rtrimup () [] % 100 _ ? = vo vo req vo delta
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 9 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary 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 system layout and facilitates accurate 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 compensates for a maximum drop of 10% of the nominal output voltage. 3. if the unit is already trimmed up, the available remote sense 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 compensation, affecting the stability and dynamic response. 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 compens ation as below figure. there are a resistor rs+ (100 ohm) from vo+ to sense+ and a resistor rs- (51 ohm)) from vo- to sense- inside of this module. 6. if not using remote sense compensation, please connec t 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. see below figure. sense+ sense- rs- vo- vo+ rs+ load sense+ sense- rs- vo- vo+ rs + load
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 10 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. over current protection to provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting for a few mili-seconds. if the over-current condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 400ms. the module operates normally when the output current goes into specified range. the typical average output current is 0.5a during hiccup. vin=48v expansion of on time port ion over voltage protection the output over voltage protection consists of circuitry that monitors the voltage on the output terminals. if the voltage on the output terminals exceeds the over voltage protection threshold, the module will shutdown into hiccup mode and restart once every 800ms. the module operates normally when the fault is cleared. test setup: waveform: r=10k vo+ vo- trim r k sense+ sense- trim r k ch1: output voltage waveform ch2: input voltage waveform ch3: output current waveform 48vin , 10 a load
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 11 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. over temperature protection the otp is achieved by thermistor rt1 and the threshold is set at 120c in non-latch mode; the hottest component q13 reaches 130c with 100lfm air flow correspondingly. it will restart automatically when the temperature falls down to 110c. the protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...). input under-voltage lockout v1=33.5v v2=34.5v input voltage ( v) inpu t c u r r e n t voltage falling voltage rising v1 v2 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 12 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. mechanical outline note: this module is recommended and compatible with pb-free wave soldering and must be soldered using a peak solder temperature of no more than 26 0 oc for less than 5 seconds. note: 1) all pins: material - copper alloy; finish ? 3 micro inches minimum gold over 50 micro inches minimum nickel plate. 2) undimensioned components are shown for visual reference only. 3) all dimensions in inches (mm); tolerances: x.xx +/-0.0 2 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm). pin connections pin function pin size 1 vin(+) 0.040?? 2 on/off 0.040?? 3 vin(-) 0.040?? 4 vo(-) 0.060?? 5 sense(-) 0.040?? 6 trim 0.040?? 7 sense(+) 0.040?? 8 vo(+) 0.060??
? 2010 bel fuse inc. specifications subject to change without notice.100711 13 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 isolated dc/dc converters 36 vdc - 75 vdc input 14 vdc /10 a output, 1/4 brick converter oct. 07, 2011 bel power inc., a subsid iary of bel fuse inc. revision history date revision changes detail approval 2011-10-7 pa first release jz wang 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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