Klaus Vestergaard Kragelund wrote...
Winfield wrote ...
Will there be shoot-through if he drives the two control
line independently?
Yes, because although T3 and T4 may be properly driven (we
aren't told), R1 and R2 have such a high value (10k) that
the FETs they are driving will turn off too slowly. An
IRF9510 has 200pF of gate capacitance, and the gate will
take several time constants to get below threshold, which
translates to say 5us of FET turn-off delay (the actual
calculation is more complex, as I've detailed many times
in these pages). The circuit will experience high rail-
to-rail shoot-through currents (e.g., over 10A) during this
time. It may survive the experience, but it's a severe
stress that should be avoided. It's a poor circuit.
Thanks,
- Win
whill_at_picovolt-dot-com