TPS22976: VBIAS lower than VIN voltage

Hardy Xue

Expert 3590 points

Part Number: TPS22976

Hi Team,

We always recommend customer to use VBIAS>=VIN in system.

1. If customer use VIN = 5V and VBIAS = 3.3V, will it have any concern?

2. If yes, could you please describe more detail for reason?

Best regards,

Hardy

over 2 years ago

+1 Kalin Burnside over 2 years ago

TI__Genius 13260 points

Hello Hardy,

We do not recommend using VBIAS lower than VIN. VBIAS must be greater than or equal to VIN. If there's an issue having a separate supply for VBIAS then tie VBIAS to VIN. VBIAS is responsible for charging the gate, and other functionalities of the device.

Regards,

Kalin Burnside

Power management

Power management forum

TPS22976: VBIAS lower than VIN voltage