Hi All

I wondered if someone could point me to a the equation/calculation used to figure out the capacitance for a half bridge/class D configuration of FET's these are the capacitors used on the power rails to ground. (This half bridge/class d has bipolar power rails), and outputs AC voltage/AC current. Would appreciate any pointers on this.

Kind Regards

Art

 

See here:
http://www.ti.com/lit/an/sloa031/sloa031.pdf

 

See here:
http://www.ti.com/lit/an/sloa031/sloa031.pdf

Thanks for the suggestion not quite what I was after this gives information on the output filter capacitance rather than the capacitance that may be used for the switching device to remove noise on the power rails not sure I'm describing it correctly

 

Power supply decoupling requires providing the bulk capacitance needed to supply the low-frequency charge and the capacitance needed for the switching transient response...
http://www.ti.com/lit/an/slyt199/slyt199.pdf

 

What I mean is selecting capacitor values for the voltage divider of a half bridge

 

https://www.google.com/search?q=sel...f+bridge&ie=utf-8&oe=utf-8&client=firefox-b-1