Flyback converter with dynamic limits based upon duty cycle and power processing method
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United States of America Patent
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Nov 21, 2017
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N/A
app pub date -
Jan 29, 2016
filing date -
Apr 28, 2015
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Abstract
Determine the duty cycle of the pulse width modulation signal to derive the voltage value of the alternating current voltage when the power supply is in the peak power working status. The voltage value of the alternating current voltage is determined as high if the duty cycle of the pulse width modulation signal is lower than the predetermined duty cycle. At this time, the limit detection voltage of the pulse width modulation controller is suppressed to protect the transistor switch, and the power supply can still provide the load apparatus with enough power. The power supply does not need any alternating current voltage detection circuit. The voltage value of the alternating current voltage is derived by determining the duty cycle of the pulse width modulation signal.
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