Re: small inverter driver chip

Mike Monett wrote:
Terry Given <my_name@xxxxxxxx> wrote:


Why not use a pair of complementary FETs, in a diagonal half-bridge arrangement. Drive the low-side N-FET as per usual, and the N-FET drain can provide the gate drive for the high-side P-FET. I do that all the time, its pretty darned cheap. All one needs to do is ensure the FETs allowable gate voltage range is sufficient for the Vcc used ;)

Cheers
Terry

How do you handle shoot-through?

Regards,

Mike Monett

its a diagonal half-bridge, so the primary inductance is in the way (P-FET - top LHS switch, N-FET = bottom RHS switch, the opposite diagonals are diode)

ergo no pr0oblems at all with shoot-thru, and the P-FET gatedrive can be fairly slow and it still works fine.

I have made hundreds of thousands of these, ranging from 50kHz to 2MHz.

Cheers
Terry
.

Quantcast