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Old 22nd February 2009, 10:20 PM   #1
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Default Possible to design a high-power class D amp with a low output impedance?

I don't know much about amp design but I was thinking about current drive with class D.

Is it feasible?
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Old 23rd February 2009, 08:49 AM   #2
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If you want current drive, then the amplifier will have a high (not low) output impedance!

It is possible (and quite easy) to use the self-oscillating 'UCD' technique to provide an amplifier with the NFB derived from the output current, rather than the output voltage.
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Old 23rd February 2009, 07:33 PM   #3
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Oops. That's what I meant.
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