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A comment on An open competition to build a smaller power inverter, with a $1M prize. Parent comment

Re:An open competition to build a smaller power inverter, wi... by shonn on Tuesday July 22, 2014 @04:50PM (#8071481)
It seems to me that the solution would be along the lines of a 1 bit DAC. The caps then have less smoothing to do.
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Re:An open competition to build a smaller power inverter, wi... by Florin_Andrei on Tuesday July 22, 2014 @07:04PM (#8072080)
Increase the frequency, yes. That's what I thought as well.

But then you run into other issues. The higher the frequency, the less "neat" are the up/down transitions, so your power elements (MOS-FET or whatever) spend more time in that twilight zone, which is exactly where they dissipate most power. And you want to avoid that.

Anyway, it's worth investigating along these lines.

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