> It looks like the conditions in the control and overcurrent sensing parts
of the
> working and the non-working PSUs are different so some further
investigation
> may be required as to why this is the case.
>
Yes, that is certainly the problem. Presumably more current is flowing
through the curr
>
> Yes, that is certainly the problem. Presumably more current is flowing
> through the current sense resistor than should be.
>
Do you mean when the power supply is connected to the mains here?
If we are still talking about the test case when you are applying an external
supply to Vstart only,
