TPS25810: Reverse Current Protection

Marco Rojas

Intellectual 2770 points

Part Number: TPS25810

Tool/software:

Hi team,

I have a customer with the below inquiry. Let me know what you think and thanks in advance!

"I would like to know if the TPS25810 has reverse current protection?

In my application, one use case can have a USB-A computer feed 5V into the TPS 25810 (USB Charge Port Controller).

I would like to avoid this situation of USB power contention. One option would be to use an ideal diode and another option would be to use an INA with a sense resistor to detect backward current flow and disable the TPS25810 through its enable pin. One of my concerns is the voltage drop. I need to charge iOS devices with as much as 3 A of current so I would like to have a solution that has little resistive loss.

Would you be able to recommend something? Any thoughts about this would be greatly appreciated"

Marco

over 1 year ago

0 Kevin Kosta over 1 year ago

TI__Mastermind 18065 points

Hi,

Thanks for reaching out on E2E!

An expert will get back shortly.

Thank you,

Kevin

0 Marco Rojas over 1 year ago in reply to Kevin Kosta

TI__Intellectual 2770 points

Hi Kevin,

Any response here? The customer just needs to confirm if the TPS25810 has reverse current protection or if it needs to be added externally

Marco

0 Christopher Lim1 over 1 year ago in reply to Marco Rojas

TI__Mastermind 37855 points

Hi Marco,

Apologies for the delays on this thread.

The TSP25810 does not support reverse current protection. We do not have any specific recommendations for how to handle RCP externally with this part. Both options the customer suggested seem viable.

If you have any new questions, feel free to open a new E2E thread, closing this one for now.

Thanks and Regards,

Chris

Power management

Power management forum

TPS25810: Reverse Current Protection