LM5060-Q1 Disable Current limit

Ryuji

Guru 20090 points

Hello,

Could you please let me know the recommended pin connection for disable the current limit function?
Should we left open the SENSE pin ?

Best Regards,
Ryuji Asaka

over 9 years ago

0 Brian Daugherty over 9 years ago

TI__Expert 5940 points

Ryuji,

I will look at this in more detail next Tuesday after holiday. My quick answer is I would not leave the SENSE pin open. Yes, the current source should pull the set voltage to a point where I-limit isn't a problem, but I still hate to leave a pin open that is high impedance. I would recommend you use a large resistor value instead. Something that puts current limit to a level you would never hit, but not so high Z to allow any noisy enviroment from playing havoc with an ultra high Z.

Brian

0 Ryuji over 9 years ago in reply to Brian Daugherty

Guru 20090 points

Hello Brian san,

Thank you for the reply.
I'm looking forward to more detail of recommended circuit for disable the OCP.

Best Regards,
Ryuji Asaka

0 Ryuji over 9 years ago in reply to Brian Daugherty

Guru 20090 points

Hello Brian san,

Are there any updated on this issue?

Best Regards,
Ryuji Asaka

0 Alex Triano over 9 years ago in reply to Ryuji

TI__Genius 12621 points

Hi Ryuji,

I just returned to the office and am the primary engineer supporting this device.

Please check out this E2E thread which discusses the same question:

Thanks,

Alex

0 Alex Triano over 9 years ago in reply to Alex Triano

TI__Genius 12621 points

Hi Ryuji,

We edited that E2E thread link. In summary, we recommend choosing a high Rs value to set the overcurrent fault threshold well above max load current.

Thanks!
Alex

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LM5060-Q1 Disable Current limit