An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network.

An AC-DC power converter can include: a front-stage power circuit; a rear-stage power circuit configured to share one power switch as a main power switch with the front-stage power circuit, where the rear-stage power circuit is coupled to a load, and a first magnetic component of the front-stage power circuit and a second magnetic component of the rear-stage power circuit are not coupled in one conductive loop from a positive terminal of a DC input voltage to a negative terminal of the DC input voltage; and an energy storage capacitor coupled to the front-stage power circuit and the rear-stage power circuit, where a common node of the first and second magnetic components is directly coupled to the power switch.

As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.

A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.

A buck converter includes a bridge rectifier, a power switch element, an output stage circuit, a first diode, a first inductor, and a detection and compensation circuit. The bridge rectifier generates a rectified voltage according to the first input voltage and the second input voltage. The power switch element selectively couples the bridge rectifier to the ground voltage according to the clock voltage. The output stage circuit generates an output voltage. The first inductor is coupled between the detection and compensation circuit and the output stage circuit. The detection and compensation circuit monitors and compares the rectified voltage and the output voltage. If it is detected that the rectified voltage is lower than the output voltage, the detection and compensation circuit will readjust the rectified voltage so that it is higher than or equal to the output voltage.

A switched-mode AC-DC converter intended to deliver a DC output voltage V.sub.out between a first output terminal and a second output terminal, the converter comprising at least one conversion chain intended to convert an AC input voltage applied between an input terminal and a neutral point, the conversion chain comprising: a first output capacitor comprising one terminal connected to the first output terminal and another terminal connected to a second terminal of the input switch, a second output capacitor with the same capacitance as the first output capacitor and with a higher capacitance than the capacitance of the link capacitor, the second output capacitor comprising one terminal connected to the second output terminal and another terminal connected to the second terminal of the input switch.

A power converter includes a switched-capacitor conversion circuit and an inductor buck circuit. The switched-capacitor conversion circuit receives an input voltage, and is operated, according to the first switching frequency, to convert the input voltage into an intermediate voltage. The inductor buck circuit and the switched-capacitor conversion circuit are connected in series. The inductor buck circuit receives the intermediate voltage, and generates an output voltage on a conversion output terminal thereof according to the intermediate voltage. The minimum value of the first switching frequency is determined by the intermediate voltage.

An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network.

An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network.

A control system for driving a motor of a compressor includes a microcontroller and a programmable logic device. The microcontroller is configured to generate a reference current value for a power factor correction (PFC) converter. The programmable logic device is configured to receive control messages from the microcontroller and, in response to data in a first control message, set a value into a timing register. The programmable logic device is configured to reverse a state of a power switch of the PFC converter between an on state and an off state in response to receiving a comparison signal indicating that a measured current in the PFC converter crossed the reference current value. The programmable logic device is configured to, subsequent to reversing the state of the power switch, wait for a period of time determined by the timing register and reverse the state of the power switch.