Current calculation of LM5175 reference design PMP10592

Jason Liu3

Intellectual 1010 points

Hi,

I got two questions about the reference design PMP10592.

What’s the actual load current? The internal reference for average current limiting is 50 mV and the current sense resistor is 50mΩ on the board PMP10592, so the load current should be 1 A, correct?

2. What the function of the circuit shown in the red cycle? If it’s used.

Thanks a lot.

Best regards,

Jason

over 10 years ago

0 Vijay86929 over 10 years ago

TI__Genius 11490 points

The circuit isn red is not being used.The current is close to 1A.

0 Jason Liu3 over 10 years ago in reply to Vijay86929

TI__Intellectual 1010 points

Hi Vijay,

Thank you very much for your support.

Is the circuit designed for compatibility with other parts? Which device is it?

Best regards,

Jason

0 Vijay86929 over 10 years ago in reply to Jason Liu3

TI__Genius 11490 points

That part of the circuit was meant to be used for analog dimming. It was not tested though.

regards

0 Jason Liu3 over 10 years ago in reply to Vijay86929

TI__Intellectual 1010 points

Thanks a lot.

Reagards,

Jason

Power management

Power management forum

Current calculation of LM5175 reference design PMP10592