PMP10737: LM74610 and Automotive design

Kami Huang60

Part Number: PMP10737

Dear Sir/Ms.

The attached file is the output voltage and current measurement using the LM74610 for reverse polarity protection. Front end: 14V
When the load current is 1A, Vo=13.8XV, when the load is instantaneously pulled to 5A, the output voltage will drop to 13.2V.
Is the phenomenon normal?輸出電壓DROOP記錄.pdf

Best Regards,

Kami Huang

over 7 years ago

0 Rama Chandra Reddy Kambham over 7 years ago

TI__Prodigy 440 points

Hello Huang,
Just to cross check, I think you are using a lab power supply to test PMP10737. The drop in voltage might be due to internal resistance of power supply and its regulation.
To give you an appropriate solution can you check/send the scope plot which measures input voltage, output voltage of LM74610 and its load current.
Thanks
Regards
Rama

0 Kami Huang60 over 7 years ago in reply to Rama Chandra Reddy Kambham

Genius 3830 points

Hello Rama,
Thanks for your kindly help. Let me check with customer.
Best Regards,
Kami Huang

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PMP10737: LM74610 and Automotive design