Systems and methods of primary-side sensing and regulation for flyback power converter with high stability
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United States of America Patent
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Dec 11, 2012
Grant Date -
Jan 19, 2012
app pub date -
Aug 23, 2010
filing date -
Jul 13, 2010
priority date (Note) -
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Abstract
System and method for regulating an output voltage of a power conversion system. The system includes an error amplifier coupled to a capacitor. The error amplifier is configured to receive a reference voltage, a first voltage, and an adjustment current and to generate a compensation voltage with the capacitor. The first voltage is associated with a feedback voltage. Additionally, the system includes a current generator configured to receive the compensation voltage and generate the adjustment current and a first current, and a signal generator configured to receive the first current and a second current. The signal generator is further configured to receive a sensing voltage and to generate a modulation signal. Moreover, the system includes the gate driver directly or indirectly coupled to the signal generator and configured to generate a drive signal based on at least information associated with the modulation signal.
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