Title:
CLASS D AMPLIFIER WITH PASSIVE RC NETWORK
Document Type and Number:
WIPO Patent Application WO2002087076
Kind Code:
A3
Abstract:
A Class D amplifier device with reduced power consumption uses a passive RC network. The output of the RC network directly feeds a comparator resulting in increased efficiency. The RC network is configured to perform several functions, including the low pass filtering of the feedback signal to remove high frequency/high amplitude clock components and provides a DC path from its output to reduce duty cycle errors. Additionally, the input signal receives low pass filtering, creating a generally flat frequency response. Finally, the clock signal is filtered to generate a triangle wave of good linearity and appropriate amplitude.
Inventors:
ANDERSSON BENGT-OLOV
Application Number:
PCT/US2002/011014
Publication Date:
December 19, 2002
Filing Date:
April 10, 2002
Export Citation:
Assignee:
MICROSEMI CORP (US)
International Classes:
H03F3/217; (IPC1-7): H03F3/217
Foreign References:
| US5815581A | 1998-09-29 | |||
| US4968948A | 1990-11-06 |
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