LM5155: LM5155 boost

Raymond He

Expert 1990 points

Part Number: LM5155

dear

The design requires 10V low voltage protection, other voltage power requirements normal.After using the UVLO function, the output voltage of 10-12V will decrease linearly, and the efficiency is only 50% when it reaches about 11V, which is lost in the MOS tube.Is this state normal?

any advance？thanks in advance~

over 4 years ago

0 Youhao Xi over 4 years ago

TI__Guru* 78440 points

Hello Raymeond,

Could you please share your schematic? Also, could you describe clearly the operating condition?

Thanks,

Youhao Xi, Applications Engineering

0 Youhao Xi over 4 years ago in reply to Youhao Xi

TI__Guru* 78440 points

Hi Raymond,

Sorry for accidently mistyping your name in my previous reply. May I assume the issue is resolved so I can close this thread? You are welcome to re-open it by following a new post.

Thanks,

Youhao

Power management

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LM5155: LM5155 boost