ev6923-s-00a high efficiency synchronous rectification ev board ev6923-s-00a rev. 1.0 www.monolithicpower.com 1 1/11/2016 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. the future of analog ic technology description the ev6923-s-00a is an evaluation board for the MP6923GS. it is configured to provide synchronous rectification solution for llc topology. mp6923 features dual synchronous gate outputs which enables high efficiency rectification by replacing the schottky rectifier with a low ron mosfet. electrical specifications parameter symbol value units vcc voltage v cc 8?24 v switching frequency f sw <300 khz features ? works with both standard and logic level fets ? compatible with energy star, 1w standby requirements ? v dd range from 8v to 24v ? fast turn-off total delay of 20ns ? max 300khz switching frequency ? <600 a quiescent current at light load mode ? supports ccm, crcm and dcm operation mode ? supports high-side and low-side rectification applications ? ac-dc adapter ? lcd & pdp tv ? telecom smps all mps parts are lead-free and adhere to the rohs directive. for mps green status, please visit mps website under products, quality assurance page. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. ev6922ds-00a evaluation board (l x w x h) 1.14? x 1.14? x 0.6? 7.1cm x 6.5cm x 2cm board number mps ic number ev6923-s-00a MP6923GS
ev6923-s-00a ? high efficiency synchronous rectif ication ev board ev6923-s-00a rev. 1.0 www.monolithicpower.com 2 1/11/2016 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. evaluation board schematic pgnd nc 5 vd2 6 pgnd 1 vg2 2 nc 10 ld 11 vd 1 9 pgnd 14 vg 1 13 en 3 vs2 7 vs1 8 vdd 12 ll 4 u1 MP6923GS pgnd pgnd pgnd pgnd pgnd 10 r7 1k r4 1k r6 10k r9 10k r11 10 r5 10 r10 10 r8 10k r3 4.99k r2 100k r1 100k r12 1 2 cn 1nf c2 10uf c5 1 2 2200uf c8 1 2 2200uf c7 1 2 d2 1 2 d1 1nf c1 4 m1 4 m2 1 ls1 1 ct 1 ls2 pgnd pgnd en vdd vg 1 vg 2 1 vout 1 gnd pgnd 10 r14 1 vs1 1 vd1 1 vg1 1 vs2 1 vd2 1 vg2 vd1 vs1 vd2 vs2 vs1 vd 1 vd 2 vs2 vg 1 vg 2 470pf c3 470pf c4 2.2uf c6
ev6923-s-00a ? high efficiency synchronous rectif ication ev board ev6923-s-00a rev. 1.0 www.monolithicpower.com 3 1/11/2016 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. ev6922ds-00a bill of materials qty ref value description package manufacturer manufacturer p/n 2 c1, c2 1nf ceramic capacitor, 50v, x7r 0603 murata grm188r71h102ka01d 2 c3, c4 470pf ceramic capacitor, 50v, x7r 0603 murata grm188r71h471ka01d 1 c5 10 f ceramic capacitor, 25v, x5r 1206 murata grm31cr61e106ka12l 1 c6 2.2 f ceramic capacitor, 25v, x7r 1206 tdk c3216x7r1e225k 2 c7, c8 2200 f electrolytic capacitor, 35v dip rubycon 2200 f/35v dia.: 16mm pin-pin:7.5mm 2 d1, d2 diode;75v, 0.15a sod-123 diodes 1n4148w n channel mosfet, 60v to-220 am90n06-10p analog power 2 m1, m2 ns n channel mosfet, 60v powerpak soic8 1 r1, r12 100k film resistor, 1% 0603 yageo rc0603fr-07100kl 1 r2 4.99k film resistor, 1% 0603 yageo rc0603fr-074k99l 3 r3, r9, r11 10k film resistor, 1% 0603 yageo rc0603fr-0710kl 2 r4, r6 1k film resistor, 5% 0603 royalohm 0603saj0102t5e 3 r5,r10, r14 10 film resistor, 5% 0603 royalohm 0603saj0100t5e 2 r7, r8 10 film resistor , 5% 1206 yageo rc1206jr-0710r 1 u1 sr controller soic14 mps MP6923GS 2 m1, m2 radiator 2 m1, m2 isolation gasket 2 m1, m2 screw 4 board stanchion
ev6923-s-00a ? high efficiency synchronous rectif ication ev board ev6923-s-00a rev. 1.0 www.monolithicpower.com 4 1/11/2016 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2016 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2?bottom silk layer figure 3?top layer figure 4?bottom layer
ev6923-s-00a ? high efficiency synchronous rectif ication ev board notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev6923-s-00a rev. 1.0 www.monolithicpower.com 5 1/11/2016 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. . ? 2016 mps. all rights reserved. quick start guide the demo board is intended to implement the synchronous rectifier in an llc resonant converter with center-tap secondary winding. if the converters implement diode rectification, 1. remove the diodes rectifiers from the board as the fig.5 shows. 2. connect the center-tap and other two secondary windings of transformer as the fig.6 shows. 3. connect the vout and gnd pins on MP6923GS demo board as the fig. 6 shows. 4. turn the power supply on. the ic will start up automatically. lr cr t1 half bridge driver m1 m2 d1 d2 vout figure 5?how to disconnect the diode rectifiers lr cr t1 half bridge driver m1 m2 vout mp6923 demo board ct ls1 ls 2 vout gnd figure 6?how to connect the ev6923-s-00a
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