Higher power switching psu, any design advice?

[subwo1]

Hi davesaudio, here is a link to a circuit which I came up with in the past. The values of R1,R2,R3, and R4 should be adjusted for optimal performance.

http://f6.grp.yahoofs.com/v1/gJO7P2I...ghpowerout.gif

I can't think of any universal high side drivers off of the top of my head. But some lower voltage ones are out there.

[davesaudio]

linky no worky?

should I rephrase " high side driver circuit using discrete components to drive the gate of the switching device beyond the rails?"
well something like that anyways...

[subwo1]

Originally posted by davesaudio
linky no worky?

should I rephrase " high side driver circuit using discrete components to drive the gate of the switching device beyond the rails?"
well something like that anyways...

Sorry, try copying and then pasting the link into the browser window.

The circuit is a such as you seek, and it can charge and discharge high capacitance gates, or I should say, it is designed that way. I have not actually built and tested it.

[subwo1]

davesaudio, there is a lower power high-side driver in the circuit in this class D amp which I actually tested as a real circuit.

http://f5.grp.yahoofs.com/v1/8PW7P-o...0class%20D.gif

[davesaudio]

tried 2 different browsers-no luck

[subwo1]

Ok, I went and got them, Here is the proposed high power version. Substitute V1 with a bootstrap diode and capacitor in the normal way.

[subwo1]

Here is the other one.