TPS63020: Pre-Bias Start up

Takashi Onawa

Genius 13200 points

Part Number: TPS63020

Hi Team,

Two quick questions on TPS63020.

1. Does TPS63020 support Pre-Bias Start up?
2. If No, What can I do to prevent a pre-bias situation?

Regards,

Takashi Onawa

over 3 years ago

0 Jasper Li over 3 years ago

TI__Mastermind 46905 points

Hi Takashi

What is the prebias voltage?

0 Takashi Onawa over 3 years ago in reply to Jasper Li

TI__Genius 13200 points

Hi Jasper-san,

Thanks for you prompt response on this.

Sorry, I don't have such the information now, My customer just asked if the TPS63020 has pre-bias protection or not.
Can you explain to me how it behaves differently depending on the pre-bias situation?

Regards,

Takashi Onawa

0 Yichen Xu over 3 years ago in reply to Takashi Onawa

TI__Expert 4760 points

Hi Takashi,

TPS63020 supports Pre-Bias Start up. And the higher the Pre-Bias voltage, the quicker the start-up. Ch1, Ch2 and Ch4 represent output voltage, SW voltage and inductor current respectively. And test condition is Vin=5V, Vo=3.8V, no load. The Pre-Bias voltages are 0 and 2.5V respectively.