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UCC28251: How to Solve the Problem of Reverse Current using UCC28251 In the case of discontinuous inductance current?

Part Number: UCC28251

Hi TI Engineers,

I am a graduate student in school, want to use UCC28251 to make a full bridge hard switching module power supply, read the manual of the chip, there is a problem is when the light load inductance current interrupted, synchronous rectifier tube is still open, then there will be reverse current into the rectifier tube causing burnout, how is your company consider it in this regard?  

The synchronous rectifier tube of the power supply is damaged when it is powered on.

Excuse me, is this the breakdown reason, how to solve it?

Regars

shaowei