LM3658: Stat 1 Pin Oscillates very Rapidly

Abhishek Shrivastava

Part Number: LM3658

Hello,

I am trying to implement battery charging circuit using LM 3658 using USB. I have connected LM 3658 in a similar way as shown in the evaluation board schematic.

I am experiencing fluctuating voltage at Stat-1 pin due to rapid oscillations, also output voltage at BATT pin has spikes.

Circuit diagram used by me.

Kindly help me to debug the problem.

over 5 years ago

0 Bill Johns over 5 years ago

TI__Guru 69186 points

Hello

For the test are you using a battery or battery simulator?
Do you have a scope capture of battery voltage and current?
Note that voltage on ISET represents battery current.

0 Bill Johns over 5 years ago in reply to Bill Johns

TI__Guru 69186 points

Hello
Are you still seeing problems with voltage on the Stat-1 pin?

0 Abhishek Shrivastava over 5 years ago in reply to Bill Johns

Intellectual 260 points

Hi Bill,

The issue has been resolved, It turned out to be some hardware issue.

Thanks,
Abhishek

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LM3658: Stat 1 Pin Oscillates very Rapidly