Semiconductor Components Industries, LLC

Jihoon Jang

Jintae Kim

JooHoon Kim

Sangcheol Moon

Wontae Lee

Dongjin Park

KyungOun Jang

Hybrid control of switching power converters. One example embodiment is a method including: operating the switching power converter such that a charge control switch has a conduction time in each switching cycle; and making adjustments to the conduction time, the adjustments dominated by voltage-mode control when the switching power supply is in a first operational state, and the adjustments dominated by current-mode control when the switching power supply is in a second operational state distinct from the first operational state.

Hybrid control of switching power converters

A controller includes a feedback sensing circuit that generates a feedback current during a first time interval in a switching period of a power converter based on an output voltage of the power converter and to generate a digital sensing signal indicative of a duration of the first time interval, and a feedback signal generator that determines a magnitude of the feedback current that flows during the first time interval based on a value of the digital sensing signal and to generate a digital feedback signal based on the determined magnitude of the feedback current. The controller adjusts the output voltage of the power converter in response to the digital feedback signal.

Circuit and method for controlling power converter based on feedback current

A method operates a switch controller of a power switch. The method includes determining a compensation value based on a quarter period of a resonant cycle of a drain voltage and a propagation delay time, the drain voltage being a voltage at a drain of the power switch, generating a sensing signal based on detection of a valley point of the drain voltage, and generating a control signal for controlling the power switch based on the sensing signal and the compensation value to turn on the power switch at a time corresponding to the valley point of the drain voltage.

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Incheon, South Korea

Jihoon Jang