ev6906-s-00a high efficiency synchronous rectification ev board ev6906-s-00a rev. 1.0 www.monolithicpower.com 1 6/8/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the ev6906-s-00a is an evaluation board for the MP6906GS. it is configured to provide synchronous rectification solution for flyback/llc topology. MP6906GS features a synchronous gate output which enables high efficiency rectification by relating the schottky rectifier with a low ron mosfet. electrical specifications parameter symbol value units supply voltage v dd 4.2?35 v features ? works with both standard and logic level fets ? compatible with energy star, 1w standby requirements ? v dd range from 4.2v to 35v ? fast turn-off total delay of 20ns ? max 400khz switching frequency ? <150 a quiescent current at light load mode ? supports ccm, dcm and quasi-resonant topologies ? supports high-side and low-side rectification ? power savings of up to 1.5w in a typical notebook adapter applications ? industrial power systems ? distributed power systems ? battery powered systems ? flyback/llc converters all mps parts are lead-free, halogen free, and adhere to the rohs directive. for mps green status, please visit mps website under quality assurance. ?mps? and ?the future of anal og ic technology? are registered trademarks of monolithic power systems, inc. ev6906-s-00a evaluation board (l x w x h) 1.14? x 1.14? x 0.6? 2.9cm x 2.9cm x 1.4cm board number mps ic number ev6906-s-00a MP6906GS
ev6906-s-00a ? high efficiency synchronous rectif ication ev board ev6906-s-00a rev. 1.0 www.monolithicpower.com 2 6/8/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evaluation board schematic 1 2 75v/0.15a d3 1 2 d1 ns 4 5, 6, 7, 8 1, 2, 3 q2 ns 100k r2 1nf c2 2.2uf c1 1 vg 1 vs 1 vd 1 vdd 1 en 1 pgnd 1k r3 3 2 1 q1 mosfet vss 5 vg 8 vd 4 sync 7 rll 3 pgnd 1 en 2 vdd 6 u1 mp6906/so8 0 r1 1 2 d2 ns ns r4 100k r5 100k r6 3 1 2 q3 0 r7 1 2 d4 bzt52c20-f/20v/5ma ll 5 vss 2 vdd 3 vg 1 vd 4 pgnd 6 u2 mp6906/sot23 1 syn ev6906-s-00a bill of materials qty ref value description package manufacturer manufacturer p/n 1 c1 2.2 f ceramic cap., 25v, x7r 0805 murata grm21br71e225ka73l 1 c2 1nf ceramic cap., 50v, x7r 0603 tdk c1608x7r1h102k 2 r1,r7 0 film res., 5% 0603 yageo rc0603jr-070rl 1 r2 100k film res., 1% 0603 yageo rc0603fr-07100kl 1 r3 1k film res., 1% 0603 royaohm 0603f1001t5e 0 r4 ns 2 r5,r6 100k film res., 5% 0805 yageo rc0805jr-07100kl n-ch 100v 8.8m ? to220-ab vishay sup90n10-8m8p 1 q1 mosfet n-ch 100v 8m ? to220 apec ap85t10gp 0 q2 ns powerpak -so8 1 q3 mmbta06l t1g npn transistor, 80v, 0.5a sot-23 diodes mmbta06lt1g 0 d1 ns smb 0 d2 ns to220 1 d3 diodes 75v/0.15a sod323 in4148ws-7-f 1 d4 bzt52c20 zener diode, 20v sot-123 diodes bzt52c20-f 1 u1 MP6906GS MP6906GS so-8 mps MP6906GS 0 u2 mp6906gj mp6906gj tsot23-6 mps mp6906gj
ev6906-s-00a ? high efficiency synchronous rectif ication ev board ev6906-s-00a rev. 1.0 www.monolithicpower.com 3 6/8/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2?top layer figure 3?bottom layer
ev6906-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. ev6906-s-00a rev. 1.0 www.monolithicpower.com 4 6/8/2015 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. quick start guide using external power supply to power the sr ic 1. connect the positive and negative terminals of the power supply to the vdd and pgnd pins, respectively. 2. preset the power supply output 4.2v~35v, then turn off the power supply. 3. connect the drain and source and gate terminals of the synchronous power mosfet to the vd and vs and vg pins, respectively (there is already a 100v power mosfet q1 connected on the board, if the customer do not want to use this mos as synchronous mosfet, you can remove this q1 and use your own mosfet instead). 4. turn the power supply on. the ic will automatic ally startup and drive the synchronous mosfet q1 to work as an ideal diode. using drain of the mosfet or system output to power the sr ic (without external power supply) 1. connect the vdd terminal of the evb to the drain of the synchronous power mosfet or system output. 2. connect the drain and source and gate terminals of the synchronous power mosfet to the vd and vs and vg pins, respectively (there is already a 100v power mosfet q1 connected on the board, if the customer do not want to use this mos as synchronous mosfet, you can remove this q1 and use your own mosfet instead). 3. the ic will automatically startup and drive the sy nchronous mosfet q1 to work as an ideal diode.
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