nostr:npub17wkkj73azdfr23hmgd07fn0h39xvy0w72garahk5p8hg8jv8dx5s09uzqr I see two issues: One is that when the PWM MOSFET is off, the channel MOSFETs potentially can see a high negative V_GS. The other is that to reliably switch the channel MOSFETs, you need a fairly high voltage on their gates since you want them to be hard on even while the PWM MOSFET is still transitioning through its linear region.