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From: "Luis de Arquer (ldearquer AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Thu, 29 Nov 2018 16:18:25 +0100
Message-ID: <CAGqyy=ZOCN0+Ko0qCeJhf_dHK72GF42UkCLUL8bEt3FMNKUHjg@mail.gmail.com>
Subject: Re: [geda-user] [off-topic] 24V automotive (truck) design issues
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Richard,

Your proposed circuit seems OK to me. Just make sure the feedback is
strong enough so the MOSFET never stays in active zone (especially
since it has low-ish gate threshold voltage).

We considered using this from Texas Instruments in some project -we
didn't need to eventually:
http://www.ti.com/lit/an/snva190b/snva190b.pdf

Maybe your problem was, after all, with the negative 1ms - 2ms pulse.
That one is pretty bad, and TVS energy spec is not too far from it
(600W 1 ms 25deg IIRC, worse with higher temperature).

Also, since your current consumption is not too high, maybe you could
consider adding some line resistance, if cost is an issue for you.

Keep us posted :)

Luis

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