bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com ?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bolero hv dc/dc converters 48v input C 24vdc C 8a output control functions page 1 GPBW24V08 C 1 / 2 brick bolero hv series ordering information ? industry standard pinout and footprint ? highest effciency in the industry: 92% at 24v, 8a; 92% at 24v, 4a ? no heat sink required (baseplate standard) ? very low common-mode noise for a commercial dc/dc converter ? two-stage input flter ? constant switching frequency, 330 khz ? remote sense ? single board smt construction ? low profle, 0.43" ? optional low profle heat sink or baseplate for improved thermal performance ? header with m3 metal inserts for mechanical connection to pcb ? microprocessor controlled ? primary-side enable, choice of logic protection features ? over temperature protection ? over voltage protection ? over current protection ? over/under input voltage protection typical characteristics ? output setpoint accuracy: 1.5% ? load regulation: 0.25% ? line regulation: 0.25% ? regulation over line, load and temperature: 3% ? low output ripple ? 50% output trim-down ? supports ieee 802.3af power over lan ? 2250v isolation example part number: (all options) GPBW24V08 m r g 0 0 x part number options: optional pin lengths e = 0.18" m = 0.145" (std.) s = 0.12" heat sink-ready plate (std.) case ground pin (std.) heat sink 001 = 0.25" 002 = 0.50" 003 = 1.00" 004 = 0.13 " ? @ 60 ? c rise heat sink to ambient ? @ 300'/min. typical thermal performance part number height natural convection power dissipation ? forced convection thermal resistance ? 001 0.25" 5w 5.8 ? c/w 002 0.50" 7w 3.2 ? c/w 003 1.00" 11w 2.0 ? c/w 004 0.13" tbd tbd bolero hv heat sink part numbers standard model number input voltage output voltage max current GPBW24V08* 48v 24v 8a * options: m = 0.145" pins ( .01") r = heat sink-ready g = case ground pin
?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com bolero hv dc/dc converters 48v input C 24vdc C 8a output page 2 input specifcations parameter min typical max units operating input voltage 36 48 75 v dc input current 7 a input capacitance 5 f input hysteresis, low line 2 v dc 1. during short circuit, converter will shut down and attempt to restart once per second. the average current during this condition will be very low and the device can be safely left in this condition continuously. 2. 50% load change only resulted in 1% output voltage step. output specifcations parameter min typical max units setpoint 23.64 24.00 24.36 v dc voltage ripple, 180f load capacitance 30 mv rms voltage ripple, 180f load capacitance 80 mv pCp current range 0 8 a current limit inception 100 115 %i out short circuit current 1 12 a settling time to 1% 2 1 ms turn-on time to 98% vnom 40 ms output overshoot at turn-on none %v out trim range, lucent 1/2 brick trim 50 105 %v out over voltage protection, latching 125 %v out v in = 48v dc , t a @25? c, 300 lfm airfow, v out = 24v dc , i out = full load unless otherwise noted. c out = 180f al-elec. available output power depends on ambient temperature and good thermal management. (see application graphs for limits.)
bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com ?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bolero hv dc/dc converters 48v input C 24vdc C 8a output page 3 general specifcations operating temperature, baseplate -40 ? c to + 100 ? c storge temperature -55 ? c + 125 ? c relative humidity 10% to 95% rh, non-condensing vibration 2 to 9 hz, 3mm disp., 9 to 200 hz, 1g material flammability ul v-0 weight 55 grams mtbf bellcore tr-332 1.6 million hours approvals and standards ul and c-ul recognized component, tuv, ul1950, csa 22.2 no. 950, iec/en 60950** pending. emc characteristics: designed to meet emission and immunity requirements per en55022, cispr 22, class b, and cispr 24. ** an external fuse shall be used to comply with the requirements. isolation specifcations parameter min typical max units isolation test voltage, input/output (basic) 2250 v dc isolation resistance 10 m 3. pcb less than 130 ? c. features parameter min typical max units over temperature protection, thermal sensor, latching 3 115 ? c input, output ripple frequency, fixed 330 khz
?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com bolero hv dc/dc converters 48v input C 24vdc C 8a output page 4 application notes coolconverter ? bel powers proprietary coolconverter? ? patented single-stage power conversion architecture, control and magnetic design allow unprecedented power density and effciency in an isolated power supply. protection and control valid input voltage range the converter measures the input voltage and will not allow operation outside of the input voltage specifcation. as shown by the graphs, hysteresis is added to both the high and low voltage to prevent the converter from turning on and off repeatedly when the voltage is held near either voltage extreme. at low line, this assures the maximum input current is not exceeded; at high line, this assures the semiconductor devices in the converter are not damaged by excessive voltage stress. on/off logic option the on/off control logic can be either negative (standard) or positive to enable the converter. for negative logic, the on/off pin is brought to below 1.0v with respect to the Cinput pin to enable the converter. the pull-down must be able to sink 100a. for positive logic, the on/off pin is brought to greater than 4.0v with respect to the Cinput pin and be limited to less than 10v. to request the positive logic version, add the suffx (p) to the standard part number. the on/off pin has a built-in pull-up resistor of approximately 100k to +5v. output over voltage protection the output voltage is constantly monitored by the microprocessor with a redundant secondary-side measurement circuit that both shuts down the duty cycle and triggers the microprocessor to shut down. if the output voltage exceeds the over voltage specifcation, the microprocessor will latch the converter off. to turn the converter on required either cycling the on/off pin or power to the converter. this advanced feature prevents the converter from damaging the load if there is a converter failure or application error. if non- latching is required, consult factory. ? an advanced microcontroller reduces parts count while adding features, performance and fexibility in the design. under voltage hysteresis 6 5 4 3 2 1 0 30 34 37 input voltage (v) output voltage (v) 36 32 33 35 31 over voltage hysteresis 6 5 4 3 2 1 0 76.5 78.5 80.5 input voltage (v) output voltage (v) 79.5 77.5 78 80 79 77
bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com ?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bolero hv dc/dc converters 48v input C 24vdc C 8a output page 5 protection and control thermal shutdown the printed circuit board temperature is measured using a semiconductor sensor. if the maximum rated temperature is exceeded, the converter is latched off. to re-enable the converter requires cycling the on/off pin or power to the converter. if non-latching shutdown is required, consult factory. control options as the behavior of the circuit is determined by frmware in the microcontroller, specifc requirements, such as: ? non-latching thermal protection ? custom valid input voltage range ? controlled delay from initiating an on/off signal for power sequencing can be accomplished with no change to hardware. the standard behavior was chosen based on system design experience, but customers may have their own requirements. please contact bel power for any special needs. remote sense the output voltage is regulated at the point where the sense pins connect to the power output pins. total sense compensation should not exceed 0.4v or 2% of vout, whichever is greater. safety an external input fuse must always be used to meet these safety requirements. external output trimming trim to trim the output voltage higher, connect the required trim resistor from the trim pin to the +sense pin. to trim the output voltage lower, connect the required trim resistor from the trim pin to the Csense pin. see diagram above. coolconverter ? trim-down 6 6 8 8 7 7 increase in output v oltage (%) 10000 1000 100 0 1 2 3 4 5 6 7 8 9 1 0 t rim resistance (k ) 24v t rim-up decrease in output v oltage (%) 1000 100 10 0 0 1 2 3 4 5 6 7 8 9 1 0 t rim resistance (k ) t rim-do wn r trim -up = v o (100+ ? %) _ (100+ 2 ? %) k 1.225 ? % ? % { } r trim -down = 100 _ 2 k ? % { } trim-up
?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com bolero hv dc/dc converters 48v input C 24vdc C 8a output page 6 effciency data power dissipation start up voltage ripple line/load regulation 23.500 23.540 23.580 23.620 23.660 23.700 23.740 23.780 23.820 23.860 23.900 0 4 8 output current (a) output voltage (v) 36v vi n 48v vi n 75v vi n 1. v out 24v/div 20ms/div 2. enable 5v/div 1. v out 1mv/div 20s/div
bel power inc. 155 flanders road, westborough, ma 01581 ? tel 508-870-9775 ? fax 508-870-9796 ? www.belpower.com ?2011 bel fuse inc. specifcations subject to change without notice. 052011 power products GPBW24V08 bolero hv dc/dc converters 48v input C 24vdc C 8a output page 7 transient response transient response 50% to 75% load transients at v in = 48v@t a = 25 ? c 75% to 50% load transients at v in = 48v@t a = 25 ? c
? 20 11 bel fuse inc. specifications subject to change without notice. 052011 corporate far east eu rope 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 page 8 bolero hv dc/dc converters 48v input ? 24vdc ? 8a output GPBW24V08 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. these parts are not however compatible with the higher temperat ures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240 ? c. mechanical GPBW24V08 0.43 0.01
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