High-resolution pulse width modulation signal generation circuit and method
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United States of America Patent
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May 17, 2016
Grant Date -
Jun 18, 2015
app pub date -
Mar 2, 2015
filing date -
Aug 29, 2012
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Abstract
A pulse width modulation (PWM) signal generation circuit and method are disclosed herein. The PWM signal generation circuit includes an integer part pulse generation circuit, and a fractional part pulse generation circuit. The integer part pulse generation circuit generates an integer part pulse using the integer part of the digitized value of a duty cycle, i.e., the ratio of the time during which any one of high and low levels is maintained to the period of a PWM signal. The fractional part pulse generation circuit generates the PWM signal using the integer part pulse and the fractional part of the digitized value of the duty cycle.
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