A voltage converter powers a load. The voltage converter includes a first power converter and a second power converter. The first power converter produces an intermediate voltage and a first output current derived from an input voltage. The first power converter supplies the intermediate voltage to the second power converter. The second power converter produces a second output current based on the intermediate voltage received from the first power converter. An output node of the voltage converter outputs a sum of the first output current and the second output current to produce an output voltage.

A droop reduction circuit on a die includes a voltage detector circuit to detect voltage droop in a supply voltage received by a first load. The droop reduction circuit further includes a driver controller circuit to drive power switch (PSH) banks in response to detection of the voltage droop. Each of the PSH banks includes at least one power switch having an input terminal, a gate terminal, and an output terminal. The input terminal is to receive a secondary voltage, which is higher than the supply voltage and is also received by a second load on the die. The gate terminal is to receive a drive signal from the driver controller, and the output terminal is to pull up the voltage droop in the supply voltage.

Various embodiments include a half-bridge comprising: a first power semiconductor; a second power semiconductor connected in series with the first power conductor; a controller for the power semiconductors; a line starting at connection node of the power semiconductors; and a meter for measuring the current in the line. The controller is configured to: compare the current with an upper threshold value and a lower threshold value; switch off the first power semiconductor if the upper threshold value is reached; switch on the second power semiconductor after a first dead time has elapsed; and switch off the second power semiconductor if the lower threshold value is reached; and switch on the first power semiconductor after a second dead time has elapsed.

A voltage control circuit comprises a sampling sub-circuit and a control sub-circuit. The sampling sub-circuit is configured to detect a potential difference between an output voltage and an input voltage to obtain a first voltage and output the first voltage to the control sub-circuit. The control sub-circuit is configured to compare a magnitude of the first voltage with a first voltage threshold, if the first voltage is less than the first voltage threshold, output the input voltage as the output voltage, and, if the first voltage is greater than or equal to the first voltage threshold, superimpose and output the input voltage and a bootstrap voltage as the output voltage.

a A PV power converter includes a transformer, a first output port a second output port, and a first power conversion circuit configured to convert power from PV array into AC power. The first power conversion circuit has a first input terminal and a second input terminal; and a first output terminal and a second output terminal. The PV power converter also includes a second power conversion circuit being configured to convert power from the transformer into DC power. The second power conversion circuit has a first input end and a second input end electrically coupled to secondary winding of the transformer, and a first output end electrically coupled to the first output port and a second output end electrically coupled to the first input terminal of the first power conversion circuit. The PV power converter also includes a first power switch.

An integrated multi-port generator-rectifier device includes multiple passive output ports provided from a plurality of passive-rectifier windings on a common, single magnetic structure. The passive-rectifier windings interact with a plurality of magnetic poles. Coils in the passive rectifier windings are serially connected. Each of the passive rectifier windings has a pitch as that is a fraction of magnet pole pitch and a pattern to magnetically decouple back emf phases of the separate rectifiers. The device further includes an active port provided by an active rectifier.

The present invention relates to a circuit arrangement and to an actuating method for a DC voltage converter, in particular a DC voltage converter with phase-shifted full-bridge topology, wherein power can also be transmitted from the primary side to the secondary side when the electrical voltage on the primary side undershoots the product of the electrical voltage on the secondary side and the transmission ratio of a transformer in the DC voltage converter. In this way, for example, a capacitor on the primary side of the DC voltage converter can be discharged to a safe, low voltage level.

An alternating-current (AC) voltage regulator including an input, an isolated power supply, a control circuit, an amplifier, and an output. The input is configured to receive an input voltage. The isolated power supply is configured to receive the input voltage and output a direct-current (DC) signal isolated from the input voltage. The control circuit is configured to receive a portion of the input voltage, adjust the portion of the input voltage, and output the adjusted voltage. The amplifier is configured to receive the isolated DC signal, the adjusted voltage, and a feedback loop, and output a differential signal. The output is configured to add the differential signal to the input voltage resulting in a regulated voltage, and output the regulated voltage.

A power conversion device includes a power supply, a converter, a current detection circuit, and a control circuit. The power supply includes positive and negative terminals. The converter includes a primary side and a secondary side. The converter is configured to output a first current to a load. The primary side is electrically connected to the positive terminal and the negative terminal of the power supply in parallel. The secondary side is electrically connected to the positive terminal of the power supply and the load in series. The current detection circuit is coupled between the secondary side and the load, and is configured to detect the first current to output a current detection signal. The control circuit is coupled to the current detection circuit for outputting a control signal to the converter according to the current detection signal and a reference current signal.

A power converter circuit includes an input configured to receive an input voltage and an output configured to provide an output voltage; a main converter coupled between a main converter input and the output and comprising a first winding and a second winding that are inductively coupled; and an auxiliary converter comprising an auxiliary converter input coupled to a third winding and an auxiliary converter output, wherein the third winding is inductively coupled with the first winding and the second winding. The auxiliary converter output is coupled between the input and the main converter input.