Monolithic Power Systems (MPS) MP6908L Fast Turn-Off Intelligent Rectifier

Monolithic Power Systems (MPS) MP6908L Fast Turn-Off Intelligent Rectifier is a low-drop diode emulator IC that replaces Schottky diodes when combined with an external switch in high-efficiency flyback converters. The MP6908L Rectifier regulates the forward drop of an external synchronous rectifier (SR) MOSFET to about 40mV, then switches off once the voltage becomes negative.

The MP6908L Intelligent Rectifier generates its own supply voltage for battery charging applications with low output voltage or short-circuit output conditions and high-side SR configuration. Configurable ringing detection circuitry prevents the MP6908L from false turnoff after VDS oscillates in discontinuous conduction mode (DCM) or quasi-resonant operation.

The Monolithic Power Systems (MPS) MP6908L Rectifier is available in a space-saving TSOT23-6 package and is ideal for USB PD quick chargers, adapters, and flyback power supplies.

Features

Wide output voltage range down to 0V, no short-circuit current flows through the body diode
Auxiliary winding for high-side or low-side rectification is not required
Ringing detection prevents false turn-on in 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 operation
Supports both high-side and low-side rectification
Available in a TSOT23-6 package

Applications

USB PD quick chargers
Adapters
Flyback power supplies with very low and/or variable output voltages

Technical Articles

How does Flyback Synchronous Rectification Effect EMI?

Monolithic Power Systems (MPS) MP6908L Fast Turn-Off Intelligent Rectifier

Features

Applications

Technical Articles

Typical Application Circuit

Block Diagram

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