EV6924-S-00A High Efficiency Synchronous Rectification EV Board DESCRIPTION FEATURES The EV6924-S-00A is an evaluation board for the MP6924GS or MP6924AGS. It is configured to provide synchronous rectification solution for LLC topology. MP6924GS 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 Vcc 4.2-35 V Works with both Standard and Logic Level MOSFETs Compatible with Energy Star Fast Turn-Off Total Delay of 35ns Wide 4.2~35V VDD Operating Range 175uA Low quiescent Current in LightLoad Mode Supports CCM, CrCM and DCM Operation Mode Supports High-side and Low-side Rectification Power Savings of Up to 1.5W in a Typical Notebook Adapter Available in a SOIC-8 Package APPLICATIONS AC-DC Adapters PC Power Supplies LCD and LED TVs Isolated DC/DC Power 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 Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV6924DS-00A EVALUATION BOARD (L x W x H) 6.3cm x 6.3cm x 3cm Board Number MPS IC Number EV6924-S-00A MP6924GS EV6924-S-00A Rev. 1.0 www.MonolithicPower.com 9/20/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 1 EV6924-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD EVALUATION BOARD SCHEMATIC R1 10 C1 100pF CN1 1 1 1, 2, 3 5, 6, 7, 8 VD1 LS1 4 C4 10uF R3 10K C2 C3 2200uF 2200uF R4 10 VG1 CT1 2 M1 R2 1K 1 D1 PGND R5 10 C5 100pF 1 1, 2, 3 5, 6, 7, 8 VD2 LS2 4 R6 1K M2 R7 10K VG2 D2 R8 10 U1 1 2 VG2 VG1 PGND VDD LL VD1 PGND R9 100K PGND C7 1nF 3 4 VD2 VSS 8 7 C6 2.2uF 6 PGND 5 MP6924GS EV6924-S-00A Rev. 1.0 www.MonolithicPower.com 9/20/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 2 EV6924-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD EV6924DS-00A BILL OF MATERIALS Qty Ref 2 C1, C5 2 C2, C3 1 C4 1 C6 1 C7 2 D1, D2 2 M1, M2 2 R1, R5 10 2 2 2 1 1 R2, R6 R3, R7 R4, R8 R9 U1 VD1,VD2,VS1, VS2,VG1,VG2 1k 10k 10 100k 6 4 Value Description Ceramic Capacitor, 100V, C0G Electrolytic Capacitor, 2200uF 35V Ceramic Capacitor, 10uF 35V, X7R Ceramic Capacitor, 2.2uF 50V, X7R Ceramic Capacitor, 1nF 50V, X7R Diode;75V, 0.15A NS N Channel Mosfet, 60V 100pF Package Manufacturer Part Number 0603 TDK DIP Rubycon 1206 TDK 1206 muRata GRM31CR71H225KA88L 0603 muRata GRM188R71H102KA01D Diodes 1N4148W Si7478DP Si7478DP Film Resistor, 5% SOD-123 TO-220 PowerPAK SO-8 1206 Film Resistor, 5% Film Resistor, 5% Film Resistor, 5% Film Resistor, 1% SR Controller 0603 0603 0603 0603 SO-8 N Channel Mosfet, 60V Yageo Royalohm Yageo Royalohm Yageo MPS C1608C0G2A101J 2200uF/35V Dia.16mm C3216X7R1V106K RC1206JR-0710R 0603SAJ0102T5E RC0603JR-0710KL 0603SAJ0100T5E RC0603FR-07100KL MP6924GS 1.0mm 铜柱 板子支柱 EV6924-S-00A Rev. 1.0 www.MonolithicPower.com 9/20/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 3 EV6924-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Layer Figure 2—Bottom Layer EV6924-S-00A Rev. 1.0 www.MonolithicPower.com 9/20/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 4 EV6924-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD 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.3 shows. 2. Connect the center-tap and other two secondary windings of transformer as the Fig.4 shows. 3. Connect the Vout and GND pins on MP6924 demo board as the Fig. 4 shows. 4. Turn the power supply on. The IC will start up automatically. D1 " M1 Vout Lr Half Bridge Driver T1 " " M2 Cr " D2 Figure 3—How to disconnect the diode rectifiers M1 Vout Lr Half Bridge Driver T1 M2 Cr LS2 CT LS1 Vout GND EV6924-S-00A Figure 4—How to connect the EV6924-S-00A NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV6924-S-00A Rev. 1.0 www.MonolithicPower.com 9/20/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 5