Abstract: Disclosed are a high-efficiency integrated power circuit with a reduced number of semiconductor elements and a control method thereof. A high-efficiency integrated power circuit of an integrated converter includes an input port, which is a first port, to which power for driving the integrated converter is input, a non-isolated port, which is a second port, for outputting, to outside the high-efficiency integrated power circuit, an allowable amount of power generated when power input through the input port passes through an inductor, and an isolated port, which is a third port, for conducing remaining power excepting power output through the non-isolated port and for maintaining the conducted remaining power inside the high-efficiency integrated power circuit.

Abstract: Embodiments of a power stage for a direct current (DC)-DC converter and a DC-DC converter are disclosed. In an embodiment, a power stage for a DC-DC converter includes an input terminal from which input power of the DC-DC converter with an input DC voltage is received, a high-side segment connected between the input DC voltage and an output signal of the power stage, and a low-side segment connected between the output signal of the power stage and ground. At least one of the high-side segment and the low-side segment includes stacked transistors having isolation terminals that are biased to reduce substrate injection.

Abstract: A chain-link converter includes a number of series-connected chain-link modules. Each chain-link module has a module controller that is programmed to control operation of the corresponding chain-link module to selectively provide a voltage source, whereby the chain-link converter is able to provide a stepped variable voltage source. The chain-link converter also includes a chain-link converter controller that is arranged in communication with each module controller, and which is programmed to, in-use, communicate to a number of the module controllers a measured converter current (IDC) that is flowing through the chain-link converter. The module controllers that receive the measured converter current (IDC) is each further programmed, in-use, to combine the measured converter current (IDC) with a measured rate of change of current (IAC) flowing through the corresponding chain-link module, to establish an instantaneous module current (Ii) that is flowing through the corresponding chain-link module.

Abstract: According to various embodiments, a power converter circuit is disclosed. The power converter circuit includes a plurality of voltage splitting units (VSUs) coupled to a plurality of current splitting units (CSUs). The VSUs are connected to each other in series and the CSUs are connected to each other in parallel. The VSUs each have a fixed voltage conversion ratio and are operated at a lower frequency than the CSUs. The CSUs each have an adjustable voltage conversion ratio and are operated at a higher frequency than the VSUs.

Abstract: A method for controlling an inverter-based resource (IBR) connected to a power grid during a grid event includes operating the IBR based on a first virtual impedance reference prior to the grid event, the first virtual impedance reference being used for determining a first virtual impedance of the IBR defining a first virtual reactance and a first virtual resistance. The method also includes receiving an indication of a start of the grid event that causes a change in the first virtual impedance reference to a second virtual impedance reference. Immediately after the change in the first virtual impedance reference, the method includes activating a soft activation module for outputting a second virtual impedance defining a second virtual reactance and a second virtual resistance that maintains a magnitude of the second virtual impedance at or above a magnitude of the second virtual impedance reference so as to reduce current in the inverter-based resource.

Abstract: A switched capacitor converter can include a plurality of input switch groups connected in series between an input terminal and an output terminal, where each input switch group can include two power switches connected in series. The switched capacitor converter can also include a plurality of output switch groups, where each output switch group can include two power switches connected in series. The switched capacitor converter can also include a plurality of capacitors, first terminals of which are respectively connected to the common nodes of every two series-connected power switches in the plurality of input switch groups, and second terminals of which are respectively connected to intermediate nodes of each output switch group. The switched capacitor converter can also include a plurality of inductors, where a first terminal of each output switch group can connect to a first terminal of a corresponding inductor.

Abstract: System and method for generating one or more compensation currents for a DC-to-DC voltage converter. For example, a system for generating one or more compensation currents for a DC-to-DC voltage converter includes: a voltage generator configured to receive a reference voltage and generate a first ramp voltage and a second ramp voltage based at least in part on the reference voltage; and a current generator configured to receive the first ramp voltage, the second ramp voltage, an input voltage, and an output voltage; wherein the current generator is further configured to: if the output voltage is smaller than the input voltage, generate a first compensation current based at least in part on the first ramp voltage; and if the output voltage is larger than the input voltage, generate a second compensation current based at least in part on the second ramp voltage.

Abstract: A gate driving power source device individually supplies a DC power source to a plurality of gate drive circuits provided for a power conversion device. The power conversion device includes a step-up/down converter and one or a plurality of AC/DC conversion circuits. The step-up/down converter includes a step-up/down upper arm switching element and a step-up/down lower arm switching element. The AC/DC conversion circuit includes an AC/DC upper arm switching element and an AC/DC lower arm switching element. The gate driving power source device includes a power source unit that supplies a shared DC power source to at least two of the step-up/down upper arm switching element, the step-up/down lower arm switching element, the AC/DC upper arm switching element, and the AC/DC lower arm switching element.

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a switching node, a power inductor coupled between the switching node and the output, a flying capacitor having a first flying capacitor terminal and a second flying capacitor terminal, a pump capacitor having a first pump capacitor terminal and a second pump capacitor terminal, the second pump capacitor terminal coupled to ground, a first switch coupled between the input and the first flying capacitor terminal, a second switch coupled between the first flying capacitor terminal and the switching node, a third switch coupled between the second flying capacitor terminal and the switching node, a fourth switch coupled between the second flying capacitor terminal and a ground voltage, a fifth switch coupled between the second flying capacitor terminal and the first pump capacitor terminal, and a sixth switch coupled between the output and the first pump capac

Abstract: Asynchronous bridge rectifier comprises a monolithic die comprising plurality of planar switching elements, each having a control terminal and two controlled terminals. The bridge rectifier further comprises a plurality of controller integrated circuits mechanically attached to the monolithic die, wherein the controller integrated circuits are configured to sense voltage across the controlled terminals of the planar switching elements and to generate a drive signal at the control terminal of the planar switching elements to control opening and closing of the planar switching elements so as to be capable of rectifying an alternating current input signal to form a rectified direct current output signal.

Abstract: A power conversion device includes power conversion units connected to a shared power source. The power conversion units each include a contactor, a power converter, and a unit controller. A contactor controller closes or opens the contactor. A sensor measures a value of at least one of input current or output current of the power converter. The unit controller determines presence or absence of a failure of the power conversion units based on the measured value of the sensor, and sends a determination result to another unit controller.

Abstract: A DC-DC power converter with closed loop error compensation may operate in both pulse width modulation (PWM) mode and pulse frequency modulation (PFM) mode. The DC-DC power converter includes type III compensation, and is operable in PWM mode and PFM mode. Use of a bypass switch for an output inductor of the power converter may increase stability of a loop including type III compensation.

Abstract: In described examples, a circuit includes a current mirror circuit. A first stage is coupled to the current mirror circuit. A second stage is coupled to the current mirror circuit and to the first stage. An output transistor is coupled to the first stage and to the current mirror circuit. A voltage divider network is coupled to the output transistor, and a power source is coupled to the second stage and to the voltage divider network.

Abstract: A circuit includes a switched capacitor circuit and a voltage generator circuit. The switched capacitor circuit includes first, second, third, and fourth switches and first and second capacitors. The first capacitor has first and second terminals, the first terminal coupled to the first switch. The second capacitor has first and second terminals, the second terminal coupled to the second switch. The third switch has a terminal coupled to the second terminals of the first and second capacitors. The fourth switch has first and second terminals, the first terminal coupled the terminal of the third switch and to the second terminals of the first and second capacitors. The voltage generator circuit has an output coupled to the second terminal of the fourth switch and is configured to provide a common mode output bias voltage at the second terminal of the fourth switch responsive to a common mode input bias voltage.

Abstract: Circuits and methods that solve the light-load problem of a multi-level converter by generating a ripple signal in the control loop of the multi-level converter that causes a large output current ripple during light load conditions. This added current ripple does not change the average output current but does create a temporary positive and negative current that can be used to balance and charge/discharge the fly capacitors of the multi-level converter. An alternative approach is to add extra switching cycles for the fly capacitors when the output ripple current crosses zero.

Abstract: A DC-DC converter includes a first capacitor and a second capacitor provided between one of a first conductive path and a second conductive path and a reference conductive path, a first switch and a second switch interposed between a first external power source and the first capacitor and between a second external power source and the second capacitor, and a control unit configured to switch the first switch and the second switch between an ON state and an OFF state, whereby the control unit, in the case of switching from shut-off control in which the first switch and the second switch are kept in the OFF state to energization control in which the first switch and the second switch are kept in the ON state, performs intermittent control in which the first switch and the second switch are intermittently switched to the ON state prior to the energization control.

Abstract: The present application provides a driving circuit of power devices, a switching circuit and a power conversion circuit. The driving circuit is configured to control switching actions of N power devices connected in parallel, where N?2 and N is a positive integer; the driving circuit includes a driving input circuit and a common magnetic bead, where a first end of the driving input circuit is electrically connected to N first ends of the common magnetic bead, N second ends of the common magnetic bead are electrically connected to control ends of the N power devices in a one-to-one correspondence, and a second end of the driving input circuit is electrically connected to second ends of the N power devices.

Abstract: Examples of the disclosure include a system for modifying a trip level of a circuit, the system comprising a protection device configured to activate responsive to a differential current exceeding the trip level, a first current transformer coupled to an input of the circuit, a second current transformer coupled to the output of the circuit, at least one measurement circuit coupled to the first current transformer and to the second current transformer, the at least one measurement circuit being configured to obtain a first current measurement from the first current transformer, obtain a second current measurement from the second current transformer, determine a bias current based on the first current measurement and the second current measurement, and modify the trip level of the protection device based on the bias current.

Abstract: A flying capacitor-type NPC three-level topology, comprising: two half-busbar capacitors and at least one bridge arm. The bridge arm comprises: a flying capacitor, two inner transistor units, two outer transistor units, and two clamping diodes, wherein the capacitance of the flying capacitor is greater than a specific value. Since the flying capacitor has a clamping effect on the two inner transistor units and the capacitance of the flying capacitor is large, voltage fluctuations of the flying capacitor would not cause overvoltage of switching transistors no matter what type of short circuit fault occurs, thereby preventing the switching transistor units from being damaged due to overvoltage and further improving the security of a circuit.

Abstract: An active clamp flyback (ACF) converter can be used to convert AC voltages to DC voltages and offers the ability to reuse leakage energy and a negative magnetizing current to achieve zero-volt-switching. The leakage energy can vary with system design and therefore may be difficult to control, but the negative magnetizing current can be controlled by adjusting a switching frequency of the ACF converter. The adjustment can be determined by comparing the negative magnetizing current to a threshold. Using a fixed threshold may not be optimal because variations in system operating conditions, such as load current, line voltage, and output voltage, can affect the amount of negative magnetizing current required for zero-volt-switching (i.e., can affect the threshold). Additionally, a range of possible switch technologies can affect the threshold. The present disclosure describes an adaptable threshold for a variable frequency ACF converter that allows for efficient switching.