LM5176: Mode Pin Behavior

Hi Mike,

Thanks for using the e2e forum.
The hiccup mode of LM5175 and LM5176 should run under the same condition.
However, the LM5175 is the only device of the two who lists a difference between DCM and CCM operation.
Do you know if they run their application in DCM or CCM?

As the MODE pin source current and CCM hiccup voltage threshold are identical within both devices, I would not expect any difference in behavior if they keep using the 49.9k Ohm resistor.

Best regards,
Niklas

Hi Niklas,

The customer application will run in both DCM and CCM mode. They just want to know is there any risk to set mode resistor as 49.9k ohm. It looks this should be okay. Thank you.

Best regards,

Mike

Hi Mike,

Thanks for the update.
Yes, I agree this should be okay.

Of course I would still recommend to run a quick sanity check test on their board with LM5176, to see if the hiccup behaves as expected.

Best regards,
Niklas