TPS25221: Continuous over current

Datta Prasad Thiyagarajan

Part Number: TPS25221

We are using TPS25221 in one our applications. The current limit resistor we use is 200K which corresponds to 275 mA current limit. I connected a 1A load along with an one ohm sense resistor and measured the voltage across the one ohm load. Please find attached waveform. Why is there a periodic dip in the current.

9 months ago

0 Kuno Wu 9 months ago

TI__Mastermind 18556 points

Hi Datta Prasad Thiyagarajan,

Let me try to use our EVM to duplicate this case, and give your feedback this week. Thank you.

Best Regards,

Kuno

0 Kuno Wu 9 months ago in reply to Kuno Wu

TI__Mastermind 18556 points

Hi Datta Prasad Thiyagarajan,

I use our EVM to have a test, and unfortunately, I can't duplicate your phenomenon(we will derease to ground, due to the high temperature), could you please measure the VIN waveform and also share your schematic to me? Thank you.

Best Regards,

Kuno

0 Datta Prasad Thiyagarajan 8 months ago in reply to Kuno Wu

Prodigy 40 points

Thank you . I missed to see your reply. Let me get the waveforms and send it to you.

0 Kuno Wu 8 months ago in reply to Datta Prasad Thiyagarajan

TI__Mastermind 18556 points

Ok, looking forward to your update.

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TPS25221: Continuous over current