On 2013-04-06 8:15 PM, Bob Blick wrote:
> It could be latchup, which is when the parasitic SCR that many IC's
> contain gets triggered. This usually happens if the IC has a signal on
> an input pin before(and during) power is applied. It can also (rarely)
> happen if an input is floating.
>=20
> Capacitance from an output to ground can cause oscillation, that would
> be my number 2 guess.
>=20

I suspected latchup as well. The funny thing is, the MOSFET driver IC
I'm using (TC427) claims to be latchup resistant.

--=20
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