TPS62067-Q1: Max output capacitor limit

Sherry Liang

Part Number: TPS62067-Q1

Dear team,

Before I asked a question on E2E about the inrush current. We finally found that the inrush current comes from output capacitor. In our datasheet, we recommend 10uF~22uF. TPS62067-Q1 powers the MCU, and MCU requires input capacitor larger than 22uF, so they set TPS62067-Q1 output capacitor to 45uF, but this will result in larger inrush current. Do we have any solution to avoid the inrush current?

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1011615/tps62067-q1-the-max-load-current-capability

Thanks & Best Regards,

Sherry

over 4 years ago

0 Tanvee over 4 years ago

TI__Genius 17421 points

Hi Sherry,

Thanks for sharing the solution with us!

There are some methods that can help you to mange the inrush current. According to me, placing the load switch between supply and additional output caps near MCU can help to mange inrush current.

There is application note that explain various method in details for managing the inrush current.

Link: https://www.ti.com/lit/an/slva670a/slva670a.pdf?ts=1631016690969&ref_url=https%253A%252F%252Fwww.google.com%252F

Hope this will help you! Let me know if you have any concern.

Best regards,

Tanvee

Power management

Power management forum

TPS62067-Q1: Max output capacitor limit