LTM4686 and -1 SVIN and INTVCC

Hi,

This is correct. Add a decoupling capacitor to the SVin pin if not connected to Vin in accordance to the datasheet. You can also simulate the design through LTSpice to make sure that the design works as intended.

Regards,

Jhun

Thank you.

Is there any risk of damage if VIN and INTVCC don't come up at the same time?

It would be more efficient if INTVCC came from backplane 5V (with VIN coming from backplane 12V). But if for some reason 5V (INTVCC) or 12V (VIN) does not start up immediately I wouldn't want to damage parts on this expensive board.

This should not be a problem. The internal MOSFETs will not be switching if both are not present.

Regards,

Jhun