ev6922ds-00a high efficiency synchronous rectification ev board ev6922ds-00a rev. 1.0 www.monolithicpower.com 1 3/14/2011 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. the future of analog ic technology description the ev6922ds-00a is an evaluation board for the MP6922DS. it is configured to provide synchronous rectification solution for llc topology. MP6922DS 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 ? <600a 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 for mps green status, please visit mps website under quality assurance. ?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 ev6922ds-00a MP6922DS
ev6922ds-00a ? high efficiency syn chronous rectifi cation ev board ev6922ds-00a rev. 1.0 www.monolithicpower.com 2 3/14/2011 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. evaluation board schematic pgnd vd2 3 vd1 6 vs2 4 en 2 vs1 5 vdd 7 vg2 1 vg1 8 u2 mp6922dn nc 5 vd2 6 pgnd 1 vg2 2 nc 10 rcp 11 vd1 9 pgnd 14 vg1 13 en 3 vs2 7 vs1 8 vdd 12 ll 4 u1 MP6922DS 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 ns r12 ns r13 cn 1nf c2 10uf c7 2200uf c10 2200uf c9 d2 d1 1nf c1 ns c5 ns c6 ls1 ct ls2 pgnd pgnd en en vdd vdd vg2 vg1 vg1 vg2 vout gnd pgnd 10 r14 1 vs1 1 vd1 1 vg1 1 vs2 1 vd2 1 vg2 vd1 vs1 vd2 vs2 vs1 vd1 vd2 vs2 vg1 vg2 470pf c3 470pf c4 2.2uf c8 m1 m2 pgnd exposed pad
ev6922ds-00a ? high efficiency syn chronous rectifi cation ev board ev6922ds-00a rev. 1.0 www.monolithicpower.com 3 3/14/2011 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2011 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 0 c5, c6 ns no stuffed 0603 1 c7 10 f ceramic capacitor, 25v, x5r 1206 murata grm31cr61e106ka12l 1 c8 2.2 f ceramic capacitor, 25v, x7r 1206 tdk c3216x7r1e225k 2 c9, c10 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 2 m1, m2 n channel mosfet, 60v to-220 am90n06-10p analog power ns n channel mosfet, 60v powerpak soic8 1 r1 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 0 r12, r13 ns film resistor, 1% 0603 yageo rc0603fr-07137kl 1 u1 sr controller soic14 mps MP6922DS r0 0 u2 ns sr controller soic8 mps mp6922dn 2 m1, m2 radiator 2 m1, m2 isolation gasket 2 m1, m2 screw 4 board stanchion
ev6922ds-00a ? high efficiency syn chronous rectifi cation ev board ev6922ds-00a rev. 1.0 www.monolithicpower.com 4 3/14/2011 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2011 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
ev6922ds-00a ? high efficiency syn chronous rectifi cation 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. ev6922ds-00a rev. 1.0 www.monolithicpower.com 5 3/14/2011 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2011 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 mp6922 demo board as the fig. 6 shows. 4. turn the power supply on. the ic will start up automatically. figure 5?how to disconnect the diode rectifiers figure 6?how to connect the ev6922ds-00a
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