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TPS61088-Q1: TPS61088-Q1 questions

Part Number: TPS61088-Q1
Other Parts Discussed in Thread: TPS61088

Hello team,

My customer is considering to use TPS61088-Q1 if the following can be meet. 

Q1) When the system power up, the TPS61088 voltage is Vin= 0V and Vout = 12V created from other DC-DC converter.  The period is maximum 10ms. The customer would like to confirm whether this situation causes  the damage to TPS61088-Q1. Does TPS61088-Q1 have problem with this situation(Vin= 0V, Vout = 12V at TPS61088-Q1 pin)?

Q2)  In some cases, TPS61088-Q1 Vin voltage may be larger than Vout voltage created from other DC-DC converter.  Is it acceptable for TPS61088-Q1?

I think that It is special situation. Would you please advise?

Best Regards,
Akihisa Tamazaki