Synchronous Rectifier Controller
Features
l Low static VCC Current (<200uA)
l Operates in a wide output voltage range
l Self-supplying for operation with low output voltage
l Self-supplying for high-side rectification without the use of an auxiliary winding
l Supports CCM, DCM and Quasi-Resonant operations
l Supports up to 120V MOSFETs
l Ringing detection prevents false turn-on during DCM and Quasi-Resonant operations (TSR
25ns typ.)
Description
The GR8386 is a new generation of synchronous rectifier (SR) controller ICs for switching mode power supplies. It can replace the secondary side diode for maximum efficiency at any load.
The GR8386 is a dedicated controller IC for synchronous rectification on the secondary side of flyback converters. It incorporates the SR MOSFET, which is rectifying the output of the secondary transformer winding.
The GR8386 can generate its own supply voltage for battery charging applications with low output voltage or for applications with high-side rectification.
Applications
l Chargers
l Adapter
Typical Application Information
High side application
Low side application
