nostr:npub10ae605fgpw08r8d2u7u65wu82n5n02gzv4wef797z5dk7g3w8smq7xnlyc the upper MOSFETs would be driven by a CMOS gate so the resistor probably wouldn't do anything (it's low impedance 0V or 5V, never high-Z).

-5V Vgs on the upper MOSFETs is the bit I missed. I'm now trying to work out if that's actually a problem in practice. they switch on and off in the order of 120Hz at most, and are only handling tens of mA each. the Vgs range is spec'd for ±12V so seems ok?