TPS40170: Is there a way to Current Limit Disable

Shinichi Inoue

Guru 21566 points

Part Number: TPS40170

Dear Specialists,

My customer is considering TPS40170 and has a question.

I would be grateful if you could advise.

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Is there a way to disable current limit function.

if possible, what disadvantages are there?

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I appreciate your great help in advance.

Best regards,

Shinichi

over 6 years ago

0 Samuel Jaffe over 6 years ago

TI__Mastermind 25590 points

Shinichi,

The customer can set the current limit resistor such that the current limit trigger point is very high. See equation 6 in the datasheet. Pick a very large value for RILIM and the current limit will never trigger.

The disadvantage is that the customer will no longer have the current limit functionality. This can cause issues if there is an unexpected short circuit or very heavy load.

-Sam

0 Shinichi Inoue over 6 years ago in reply to Samuel Jaffe

Guru 21566 points

Hi Smmuel,

Thank you for your reply.

I understand when RLIM is large, current limit is actually disable.

I'll share this information with the customer.

I appreciate your great help.

Best regars,
Shinichi

0 Samuel Jaffe over 6 years ago in reply to Shinichi Inoue

TI__Mastermind 25590 points

Thank you. If this has resolved the issue, please click to confirm that the issue is resolved. Thank you!

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TPS40170: Is there a way to Current Limit Disable