TPS61022: Why need prebias

Grey Guo

Intellectual 2420 points

Part Number: TPS61022

Tool/software:

Hi team,

Why is prebias required when the input voltage is higher than 4.8V? Thanks.

Best Regards

Grey

4 months ago

+1 Nini Zhong 4 months ago

TI__Genius 13715 points

Hi Grey，

this is related to the internal high side FET, during start up, the voltage stress of high side FET is Vin-Vout. If Vin is higher tahn 4.8V, the High side FET is at the risk of damage.

Power management

Power management forum

TPS61022: Why need prebias