TPS61500: TPS61500 EMI Issue

Yang Wu

Part Number: TPS61500

Hi Team,

My customer has an EMI issue about TPS61500. The input is 12V, output is 38V 400mA. could you refer to the SCH, PCB and EMI Test Report, and give your suggestion to improve EMI performance?

Thanks!

Yang

TPS61500 EMI TEST REPORT.zip

over 5 years ago

0 Sean Zhou over 5 years ago

TI__Mastermind 22745 points

Hi Yang,
As you know, EMI is very complicated on the system level. And I'm not an EMI expert. I can just give some advice to you as below:
1. Have you changed the switching frequency and is there any improvement under different switching frequency?
2. The GND layout is not very good, the close loop is not optimized;
3. Have you changed any inductors? it may can help but I'm sure.
Regards
Sean

0 Yang Wu over 5 years ago in reply to Sean Zhou

TI__Expert 3090 points

Hi Sean,

Thanks a lot. I will pass it to the customer.

Yang

0 Sean Zhou over 5 years ago in reply to Yang Wu

TI__Mastermind 22745 points

Hi Yang,
Ok. if you have any further question, please let me know.
Regards
Sean

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TPS61500: TPS61500 EMI Issue