TPS25942A: Reverse Current Protection

Hi Ozkan,

Welcome to e2e. Do you mean that device is allowing reverse current?

Regards

Kunal Goel

Hi Kunal,

Thanks for response. No, device isn't allowing reverse current. It was drawing current more than -238mA from power supply when it was reverse connection. But It didn't reflect it into the main curcuit. For example, Power supply was showing 3.3V and 6A when I tested the circuit with 5V and 5A for reverse current protection. Is it normal? I don't think so. 

Hi Ozkan,

Can you share some diagram of your test condition?

Regards

Kunal Goel

Hi Kunal,

My test diagram here:

Hi Ozkan,

Are you directly applying -5V at input? This device does not support that. You will need to add a diode in return path like this:

Regards

Kunal Goel

Hi Kunal,

Thanks for answer. I apologize for my late response. But I didn't receive a notification email for your reply.

What is your advice for this diode? What is your advice for this diode? What should be the features for the diode? Are you give me some suggestion?

Hi, 

I am out of office this week. I will try to get back by tomorrow eod.

Regards

Kunal Goel