TPS22990: Minimum VBIAS Capacitor

Don Schelle

Part Number: TPS22990

Hello,

I'm using the TPS22990 with VIN = 1.8V and VBIAS = 5V. Each rail has it's own bypass capacitor to GND. What is the minimum capacitance required on the VBIAS rail?

Don

over 4 years ago

+1 Kalin Burnside over 4 years ago

TI__Genius 13300 points

Hello Don,

The current draw on the Vbias line isn't significant enough to require a capacitor so the minimum would be 0.

Regards,

Kalin Burnside

Power management

Power management forum

TPS22990: Minimum VBIAS Capacitor