Abstract: A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.

Abstract: A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.

Abstract: The present disclosure provides a power supply system and a method for supplying power. The power supply system includes an isolating circuit and a first converting circuit. The isolating circuit includes an input terminal and an output terminal. The input terminal of the isolating circuit is configured to connect with a second input source and receive the alternating current or direct current outputted from the second input source. The first converting circuit includes an input terminal and an output terminal. The input terminal of the first converting circuit is configured to connect with a first input source and the output terminal of the isolating circuit. The first converting circuit is configured to convert electricity to output the direct current.

Abstract: A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.

Abstract: A method for controlling a resonant DC/DC power converting circuit is provided. The resonant DC/DC power converting circuit having a converter output and a converter input comprises at least two converters having similar structures and outputs connected in parallel as said converter output, and a controller. Each converter comprises a full-bridge inverter unit and a resonant unit. The full-bridge inverter unit is configured with at least four switches. The resonant unit is coupled with said full-bridge inverter unit. The controller outputs two groups of driving control signals to drive four switches in said two converters respectively. The method comprises: making said two converters operate at the same frequency and interleave with preset phase shift; and making two of driving control signals in one group interleave with preset angle to reduce output current of said converter corresponding controlled thereby, when output currents of said two converters are not approximately equal.

Abstract: A method for controlling a resonant DC/DC power converting circuit is provided. The resonant DC/DC power converting circuit having a converter output and a converter input comprises at least two converters having similar structures and outputs connected in parallel as said converter output, and a controller. Each converter comprises a full-bridge inverter unit and a resonant unit. The full-bridge inverter unit is configured with at least four switches. The resonant unit is coupled with said full-bridge inverter unit. The controller outputs two groups of driving control signals to drive four switches in said two converters respectively. The method comprises: making said two converters operate at the same frequency and interleave with preset phase shift; and making two of driving control signals in one group interleave with preset angle to reduce output current of said converter corresponding controlled thereby, when output currents of said two converters are not approximately equal.

Abstract: A power factor correction converter and a control method are disclosed. A power factor correction converter includes a power conversion module, a capacitor, a third switch unit, and a fourth switch capacitor. The power conversion module includes a first switch, a second switch, a first switch unit, a second switch unit, and an inductor. The first switch is coupled to a first input terminal. The second switch is coupled to a second input terminal. The first switch is coupled between an output terminal and the first switch. The second switch is coupled between the output terminal and the second switch. The inductor is coupled between the first and the second switch unit. The capacitor is coupled to the output terminal. The third switch unit is coupled between the second input terminal and the capacitor. The fourth switch unit is coupled between the first input terminal and the capacitor.

Abstract: The present disclosure provides a power supply system and a method for supplying power. The power supply system includes an isolating circuit and a first converting circuit. The isolating circuit includes an input terminal and an output terminal. The input terminal of the isolating circuit is configured to connect with a second input source and receive the alternating current or direct current outputted from the second input source. The first converting circuit includes an input terminal and an output terminal. The input terminal of the first converting circuit is configured to connect with a first input source and the output terminal of the isolating circuit. The first converting circuit is configured to convert electricity to output the direct current.

Abstract: A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.

Abstract: A power factor correction converter and a control method are disclosed. A power factor correction converter includes a power conversion module, a capacitor, a third switch unit, and a fourth switch capacitor. The power conversion module includes a first switch, a second switch, a first switch unit, a second switch unit, and an inductor. The first switch is coupled to a first input terminal. The second switch is coupled to a second input terminal. The first switch is coupled between an output terminal and the first switch. The second switch is coupled between the output terminal and the second switch. The inductor is coupled between the first and the second switch unit. The capacitor is coupled to the output terminal. The third switch unit is coupled between the second input terminal and the capacitor. The fourth switch unit is coupled between the first input terminal and the capacitor.

Abstract: The disclosure provides a control circuit for a power converter, a conversion system and a controlling method thereof. The conversion system includes an AC power supply, a power converter and a control circuit. The power converter includes a first and second bridge arms connected in parallel. The first bridge arm includes a first and second switches connected in series. A second end of the first switch is connected with a first end of the second switch and coupled to a first end of the AC power supply by an inductance component. The first and second switches work at a first switching frequency. The control circuit is used for controlling the first and second switches, so that the current flowing through the inductance component is decreased to zero before the at least one first switching cycle is over.

Abstract: A method for protecting a converter device comprises the steps of: detecting an alternating current signal; when the alternating current signal is abnormal, generating an activating signal according to the abnormal alternating current signal; generating a control signal according to the activating signal; and controlling at least one synchronous rectifying power switch of the converter device according to the control signal. Furthermore, a converter device which implements the method is provided.

Abstract: A resonant converter and voltage stabilizing method thereof are provided. The resonant converter includes a converting stage circuit, a diode-rectifying stage circuit, a filter and load stage circuit, a logic circuit, a driving circuit, and an energy-recycling circuit. The method includes steps of recycling an energy from the filter and load stage circuit to the converting stage circuit when the resonant converter is light- or zero-loaded.

Abstract: A resonant converter and voltage stabilizing method thereof are provided. The resonant converter includes a converting stage circuit, a diode-rectifying stage circuit, a filter and load stage circuit, a logic circuit, a driving circuit, and an energy-recycling circuit. The method includes steps of recycling an energy from the filter and load stage circuit to the converting stage circuit when the resonant converter is light- or zero-loaded.