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TPS563210A: Bootstrap and Soft start capacitor

Part Number: TPS563210A

Hi team,

My customer is selecting external parts for the TPS563210A. I received a question about the voltage rating for bootstrap and Soft start capacitor.

1. For the bootstrap capacitor, it seems that the TPS563210A has internal 5V regulator and it is connected to VBST pin. Therefore, should customer choose a ceramic capacitor rated at 5Vx2=10V or higher, with a margin of about twice as much?

2. For the soft start cap, I though that the SS pin voltage will be same as VF, but Fig.28 to Fig.31 in d/s show that SS pin voltage is 5V. Is it true? 

Regards,

Yamaguchi