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MP6908A

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

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MP6908A

MP6908A

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

Datasheet

Description

The MP6908A is a low-drop diode emulator IC that, when combined with an external switch, replaces Schottky diodes in high-efficiency flyback converters. The MP6908A regulates the forward drop of an external synchronous rectifier (SR) MOSFET to about 40mV, which switches off once the voltage becomes negative.

The MP6908A can generate its own supply voltage for battery charging applications with a potential low output voltage. The MP6908A can also generate this voltage at short-circuit output conditions or high-side SR configurations. Programmable ringing detection circuitry prevents the MP6908A from turning on falsely at V_DS oscillations during discontinuous conduction mode (DCM) and quasi-resonant operation.

The MP6908A is available in a space-saving TSOT23-6 package.

Features & Benefits

Supports DCM, CCM, Quasi-Resonant Operations and Active Clamp Flyback
Supports up to 600kHz Switching Frequency
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 Standards
~30ns Fast Turn-Off and Turn-On Delay
~100µA Quiescent Current
Supports both High-Side and Low-Side Rectification
Available in a TSOT23-6 Package

Active Part Numbers:

MP6908AGJ-P MP6908AGJ-Z

Meaning of P & Z

Design Resources

Designing a Synchronous Rectification Solution to Reduce Excessive Heat (Part II)

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200 Max per Company.
Limited Inventory to support product development.

Technical Forum

Questions answered by MPS engineers in 24h

MP6908 in SR of low voltage DC DC application

...min.kyaw1, MP6908 is good for applications less than 100kHz. If you are using high fsw then use the MP6908A/08S. Yes, it should be about to handle ...

DC-DC POWER CONVERTERS

Latest activity 6 months ago

Whats the difference between.mp6907.6908A.ect.if used.in the flyback. which do you perfer？

...y! The choice depends on the flyback converter’s switching frequency and your efficiency goals. The MP6908A is good for switching frequency upto 50...

DC-DC POWER CONVERTERS

Latest activity 2 years ago

Mp6908 vg specs

...n value under all VDD conditions is specified to be 5V. Is it? Any help will be highly appreciated. MP6908A_GaN_UCC28782

DC-DC POWER CONVERTERS

Latest activity 5 months ago

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All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.

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