LM3481-FLYBACKEVM: OVP operation principle

Roy Chou1

Genius 12595 points

Part Number: LM3481-FLYBACKEVM
Other Parts Discussed in Thread: LM3481

Hi Team,

Could you let me know if we use Flyback topology of LM3481.Do we have OVP function?

If we have, what is the operation principle? I see the sec7.3.1 but it look like OVP will use the FB pin to achieve.

And I also don't know 7.3.1 meaning, could you brief introduce....

Roy

0 Yinsong Cai1 over 3 years ago

Hi Roy,

You are right about 7.3.1. The FB is grounded in LM3481 Flyback EVM so the OVP is not enabled.

Thanks,

Yinsong

0 Roy Chou1 over 3 years ago in reply to Yinsong Cai1

Hi Yinsong,

Could you let me know how could we achieve OVP protection in LM3481 Flyback topology?

Roy

0 Yinsong Cai1 over 3 years ago in reply to Roy Chou1

Hi Roy,

You can consider the primary side regulation. You can also refer to Youhao's suggestion.

Thanks,

Yinsong

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