Method for operating a PWM output of a driver for a power semiconductor
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United States of America Patent
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May 7, 2013
Grant Date -
Aug 9, 2012
app pub date -
Aug 1, 2011
filing date -
Jul 30, 2010
priority date (Note) -
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Abstract
A method for outputting an analog value at a PWM output of a driver for a power semiconductor. The method comprises converting the analog value to a PWM signal which has two signal levels and which is at a fixed PWM frequency. For an inactive state of a binary supplementary value the PWM signal is output at the PWM output. For an active value of the supplementary value the PWM signal is output together with a supplementary signal at the PWM output. The current signal level of the PWM signal and the respective other signal level are output alternately as a supplementary signal at a signal frequency greater than the PWM frequency.
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