MP9985

MP9985

High-Frequency, CCM/DCM, Flyback Ideal Diode with Integrated 100V/10mΩ MOSFET and No Auxiliary Winding Requirement

概要

The MP9985 is a fast turn-off, intelligent rectifier for flyback converters that integrates a 100V MOSFET. The device can replace a diode rectifier for higher efficiency and power density. The chip regulates the internal power MOSFET’s forward voltage (V_IN) drop to 40mV and turns off before the drain-source voltage (V_DS) reverses.

The MP9985 can generate its own supply voltage (V_IN) without auxiliary winding, making it well-suited for charger applications with a low output voltage (V_OUT) requirement or any other adapter application with a high-side (HS) set-up. The internal ringing detection circuitry prevents the MP9985 from falsely turning on during discontinuous conduction mode (DCM) or quasi-resonant (QR) operation.

The MP9985 is available in an SOIC-8 package.

機能と利点

Integrated 100V/10mΩ MOSFET
Wide Output Voltage (V_OUT) Range Down to 0V
Does Not Require Auxiliary Winding for High-Side (HS) or Low-Side (LS) Rectification
Supports Discontinuous Conduction Mode (DCM), Continuous Conduction Mode (CCM), and Quasi-Resonant (QR) Operation
Ringing Detection Prevents False Turn-On during DCM
Compatible with Energy Star
150μA Quiescent Current (I_Q)
Available in an SOIC-8 Package