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TPS22929D: Question about Pre Bias Operation

Part Number: TPS22929D
Other Parts Discussed in Thread: TPS22910A, TPS22953

Dear Specialists,

My customer is considering TPS22929D and has a question.

I would be grateful if you could advise.

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Question

When the power is up, Vout is rising up faster than Vin.

In this condition, Vout is supplied before the device is power up.

Does it have any possibility to break?

Also does protection circuit work properly?

Does it have a possibility of  flowing through Vin? 

Is there any problem?

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I appreciate your great help in advance.

Best regards,

Shinichi

Question about TPS22929D.pptx