EV9989-S-00A

EV9989-S-00A High Efficiency Synchronous Rectification EV Board FEATURES DESCRIPTION The MP9989 is a fast turn-off, intelligent rectifier for flyback converters that integrates a 100V MOSFET. It can replace a diode rectifier for higher efficiency and power density. The chip regulates the forward voltage drop of the internal power switch to 40mV and turns off before the drain-source voltage reverses. The MP9989 can generate its own supply voltage without the need for auxiliary winding, which makes it suitable for charger applications with a low output voltage requirement or any other adaptor applications with high-side set-up. The internal ringing detection circuitry prevents the MP9989 from falsely turning on during discontinuous conduction mode (DCM) or quasi-resonant operations. EV9989-S-00A is the evaluation board for MP9989.       Integrated 100V/10mΩ MOSFET Wide Output Range down to 0V No Need for Auxiliary Winding for High-Side or Low-Side Rectification Ringing Detection Prevents False Turn-On during DCM Operations Compatible with Energy Star Supports DCM, CCM, and Quasi-Resonant Operations APPLICATIONS    Laptop Adapters QC and USB PD Charger High-Efficiency Flyback 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. EV9989-S-00A EVALUATION BOARD (L x W) 2.2cm x2.2cm Board Number EV9989-S-00A MPS IC Number MP9989GS EV9989-S-00A Rev. 1.0 www.MonolithicPower.com 5/13/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 1 EV9989-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD EVALUATION BOARD SCHEMATIC 20R R3 C2 1 2 2.2nF/250V 1 1 2 20R R2 D S D S 8 7 1 VS VD 3 D SENSE 6 C1 470nF/25V 4 D VDD 5 1 U1 MP9989GS VDD R1 300 BILL OF MATERIALS Qty RefDes Value 1 C1 470nF 1 C2 2.2nF 1 2 1 3 R1 R2,R3 U1 VS,VD,VDD 300 20 MP9989GS Connector Description Ceramic Capacitor;25V;X7R Ceramic Capacitor;250V;X7 R Film Resistor;1% Film Resistor;1% R7 1.0mm Package Manufacturer 0805 Murata 0805 TDK 0603 1206 SOIC-8 Yageo Yageo MPS Manufacturer P/N GRM21BR71E474KA01L C2012X7R2E222K RC0603FR-07300RL RC1206FR-0720RL R7 EV9989-S-00A Rev. 1.0 www.MonolithicPower.com 5/13/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 EV9989-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1: Top Layer EV9989-S-00A Rev. 1.0 www.MonolithicPower.com 5/13/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 3 EV9989-S-00A – HIGH EFFICIENCY SYNCHRONOUS RECTIFICATION EV BOARD QUICK START GUIDE 1. Connect the VS and VD pin into the flyback circuit to replace the freewheel diode. 2. Turn the power supply on. The IC will start up and work as a freewheel diode automatically. 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. EV9989-S-00A Rev. 1.0 www.MonolithicPower.com 5/13/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 4