I'm designing a PCB for a high voltage mosfet ripple filter/capacitor multiplier, and I usually use the IRF820 for positive applications, but I'm very unfamiliar with P-channel devices capable of a couple hundred or more volts for the negative version of the board. Does anybody have any suggestions for a suitable P-channel mosfet with similar functionality to the IRF820? From what I can tell there isn't a P-channel compliment to the 820.
It is possible to use a NMOS without a floating input: with auxiliary transistors, you can change its sex, and with capacitors, you can translate voltages.
N-types are cheaper, more efficient, more common and reach very high voltages.
The drawback of this circuit is the need to include robust protections, to handle the capacitors charge/discharge currents
N-types are cheaper, more efficient, more common and reach very high voltages.
The drawback of this circuit is the need to include robust protections, to handle the capacitors charge/discharge currents
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