MP6908

Fast Turn-Off Intelligent Rectifier with No Need for Auxiliary Winding

Datasheet

概要

The MP6908 is a low-drop diode emulator IC that, when combined with an external switch, replaces Schottky diodes in high-efficiency flyback converters. The MP6908 regulates the forward drop of an external synchronous rectifier (SR) MOSFET to about 40mV, which switches off once the voltage becomes negative.
The MP6908 can generate its own supply voltage for battery charging applications with potential low output voltage, and at short circuit output condition, or for high-side SR configuration. Programmable ringing detection circuitry prevents the MP6908 from turning on falsely at Vds oscillations during discontinuous conduction mode (DCM) and quasi-resonant operation.
The MP6908 is available in a space-saving TSOT23-6 package.

機能と利点

Wide Output Range down to 0V, No Short Circuit Current Flows through Body Diode
No Need for Auxiliary Winding for High-Side or Low-Side Rectification
Ringing Detection Prevents False Turn-On during DCM and Quasi-Resonant Operations
Works with Standard and Logic Level SR MOSFETS
Compatible with Energy Star
~30ns Fast Turn-Off and Turn-On Delay
~100µA Quiescent Current
Supports DCM, CCM, and Quasi-Resonant Operations
Supports both High-Side and Low-Side Rectification
TSOT23-6 Package Available