can someone explain me why in this class-B power amplifier circuit, those two signal(driver?) mosfet generate a lot of cross condution ?

the two mosfet i used : 2N7002 and BSS84


Thank you in advance.

  • \$\begingroup\$ Who said that is a class-B amplifier? \$\endgroup\$ – sstobbe Jul 4 '19 at 14:05

The MOSFETs don't immediately switch, and they won't both switch at exactly the same time. There is a period when both are 'on' and as such you get shoot through.

You need to drive the gates independently with some dead time to eliminate it.

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