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发表于 2009-9-21 08:14:08
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or right to the horse's mouth: http://www.nxp.com/acrobat_download/usermanuals/UM10155_2.pdf
this is a Philips application note detailing the patent Bruno Putzeys developed when he was at Philips. Bruno then left and joined UcD and the basic structure of various UcD Class D amplifiers follows the same architecture outlined in the Philips application.
the UcD class D amps are highly praised for its sound quality. In contrast, IRAudamp (there are quite a few versions of them, available here http://www.irf.com/technical-info/refdesigns/audiokits.html) is an old design (pre-filter feedback vs. UcD / Philips's post filter feedback).
the Philip's architecture can be easily simulated and simplified. |
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