Abstract: A detection circuit for a switching converter, whereby: the detection circuit is coupled in parallel with an output capacitor of the switching converter, and is configured to provide a detection branch coupled in parallel with the output capacitor during a first period of a switching cycle, in order to detect an output voltage of the switching converter; and an output voltage detection signal is generated according to the detected output voltage during a second period of the switching cycle. A switching converter can include the detection circuit and an integrated circuit.

Abstract: The present disclosure provides a circuits for harvesting energy from an energy source. The energy source may have a first and a second potential of an input voltage. The circuits may further comprise one or more of a charging capacitor, transformers, transistors, or diodes. The circuits may be used for harvesting energy from thermoelectric generators.

Abstract: A power semiconductor device protection circuit includes: a drive circuit that drives a power semiconductor device; a current detector which includes a first resistor and an inductor connected in parallel; and a detection circuit that detects a short-circuit condition of the power semiconductor device. One end of the first resistor and one end of the inductor are connected to one terminal of the power semiconductor device. The detection circuit detects the short-circuit condition of the power semiconductor device by comparing a voltage of the one terminal of the power semiconductor device, which changes as a function of current flow through the first resistor and the inductor, with a short-circuit detection voltage. A reference potential of the drive circuit is connected to the other end of the first resistor and the other end of the inductor.

Abstract: A power converter assembly comprises a plurality of power converter channels each arranged to provide a three-phase output to an electrical machine having a multiple of three-phase windings. The power converter assembly further comprises control means arranged to provide a torque demand signal to the plurality of power converter channels to provide, together, a desired torque output to drive the machine and a temperature sensing means to detect temperature in the power channels and/or at the windings of the machine. The control means is arranged to determine the proportion of the desired torque output to be provided by each channel based on the detected temperature.

Abstract: An electronic isolator device arranged for receiving field wiring from a field element includes a connector configured to receive a surge element for providing surge functionality to the electronic isolator device, and to provide surge protection to the connectivity by way of the field wiring. The connector is configured to connect the surge element to the electronic isolator device and to the field wiring. The connector is arranged for parallel connection of the surge element with respect to the field wiring such that the surge element can be connected and disconnected with the isolator device without disrupting the connection of the isolator device with the field elements.

Abstract: A switched-mode power supply includes an input, an output, and a transformer including primary and secondary windings. The power supply also includes a synchronous rectifier coupled to selectively conduct current through the secondary winding of the transformer. The synchronous rectifier includes a source, a gate and a drain terminal. The power supply further includes a controller having a supply voltage terminal and a gate terminal to supply a control signal to the gate of the synchronous rectifier, and a circuit coupled between the supply voltage terminal of the controller and at least one of the gate terminal of the controller and the drain terminal of the synchronous rectifier to supply power from the gate terminal of the controller or the drain terminal of the synchronous rectifier to the supply voltage terminal of the controller. Methods of supplying power in switched-mode power supplies are also disclosed.

Abstract: A method of operating a power conversion system including converting variable frequency AC voltage to constant frequency AC voltage by a power converter, setting a first peak current reset threshold above operating currents previously observed during steady state short circuit current regulation in by a controller of the power converter, setting a second peak current reset threshold at a current lower than the previously observed steady state short-circuit regulation point observed during previous operation during steady state short circuit current regulation by the controllers of the power converter, resetting inverter converter AC output regulating voltage to 0 volts, and ramping AC output regulating voltage back up into steady-state operation when the second a peak current reset threshold is exceeded.

Abstract: A power converter with over temperature protection compensation includes a main conversion unit, a primary-side control unit, a secondary-side control unit, a secondary detection circuit, and an over temperature adjustment circuit. The secondary-side control unit obtains a secondary voltage change value through the secondary detection circuit, and the secondary-side control unit correspondingly provides a current change value to the over temperature adjustment circuit according to the secondary voltage change value. The over temperature adjustment circuit provides a temperature control voltage according to the current change value so that the secondary-side control unit determines whether an over temperature protection is activated according to the temperature control voltage.

Abstract: According to an aspect, a power supply system includes a plurality of power stages including a first power stage and a second power stage. The power supply system includes a voltage regulator connected to the first power stage and the second power stage. The voltage regulator is configured to detect an analog temperature signal from at least one of the first power stage and the second power stage via a communication line. The analog temperature signal is detected within a first voltage range. The voltage regulator is configured to transmit a digital bit stream to the first power stage and the second power stage via the communication line. The digital bit stream includes one or more programmable power stage parameters. The digital bit stream has digital levels within a second voltage range.

Abstract: A power conversion device suppresses voltage variation of a power supply bus. The device includes a variation compensation circuit and a control circuit. The variation compensation circuit includes: a first capacitor connected to the power supply bus; a second capacitor connected in series between the first capacitor and a ground; an auxiliary capacitor; and a converter including a switching element and having a voltage step-down function, the converter being connected to the second capacitor and the auxiliary capacitor. The control circuit includes an active power calculating section that calculates instantaneous active power ip in the variation compensation circuit. The control circuit controls the voltage Vc of the auxiliary capacitor using the instantaneous active power ip.

Abstract: A power conversion device suppresses voltage variation of a power supply bus. The device includes a variation compensation circuit and a control circuit. The variation compensation circuit includes: a first capacitor connected to the power supply bus; a second capacitor connected in series between the first capacitor and a ground; an auxiliary capacitor; and a converter including a switching element and having a voltage step-down function, the converter being connected to the second capacitor and the auxiliary capacitor. The control circuit includes a proportional resonant control section having a peak gain for variation with a frequency ?0 which is twice a frequency of the single-phase alternating current. The control circuit uses the proportional resonant control section to generate a signal for controlling the switching element.

Abstract: A switching regulator includes a first switch circuit, a second switch circuit, and a protection circuit. The first switch circuit has a first connection node coupled to a first reference voltage, and a second connection node coupled to one end of an inductor. The second switch circuit has a first connection node coupled to a second reference voltage, and a second connection node coupled to the one end of the inductor. The protection circuit senses a voltage level at the first connection node of the first switch circuit, and selectively enables an auxiliary current path in response to the voltage level at the first connection node of the first switch circuit, wherein the auxiliary current path and at least the first switch circuit are arranged in a parallel connection fashion.

Abstract: A switch-mode power supply circuit includes a low-side switching transistor, a high-side switching transistor, a low-side current sensing circuit, and a gate driver circuit. The low-side current sensing circuit is coupled to the low-side switching transistor and is configured to sense a current flowing through the low-side switching transistor. The gate driver circuit is coupled to the low-side current sensing circuit and the high-side switching transistor. The gate driver circuit is configured to generate a signal having a first drive strength to switch the high-side switching transistor based on current flowing through the low-side switching transistor being less than a threshold current, and to generate a signal having a second drive strength to switch the high-side switching transistor based on current flowing through the low-side switching transistor being greater than the threshold current. The first drive strength is greater than the second drive strength.

Abstract: The semiconductor device according to the present invention includes a semiconductor module, a cooling member, and a heat transfer member. The semiconductor module includes a switching element and a diode connected in antiparallel to each other. The heat transfer member is disposed between the semiconductor module and the cooling member so as to transfer heat generated by the switching element and the diode to the cooling member. The heat transfer member has a mounting surface on which the switching element and the diode are mounted side by side and a surface which is opposite to the mounting surface and is disposed in contact with the cooling member. In the heat transfer member, the thermal conductivity in a first direction parallel to the mounting surface is higher than the thermal conductivity in a second direction perpendicular to the mounting surface.

Abstract: To provide a semiconductor device signal transmission circuit for drive-control, a method of controlling a semiconductor device signal transmission circuit for drive-control, a semiconductor device, a power conversion device, and an electric system for a railway vehicle capable of preventing malfunction due to noise while speeding up or reducing loss of a switching operation. The semiconductor device signal transmission circuit for drive-control that is connected between a semiconductor device constituting an arm in a power conversion device and a drive circuit configured to drive the semiconductor device, including: an inductor; and an impedance circuit including a switch and connected in parallel with the inductor.

Abstract: An adapter is for a metering assembly. The metering assembly includes an electrical switching apparatus and a socket assembly. The socket assembly has a plurality of jaw members. The adapter includes a base member and a plurality of electrical contacts each coupled to the base member and structured to be mechanically coupled and electrically connected to a corresponding one of the jaw members. Each of the electrical contacts is structured to be electrically connected to the electrical switching apparatus.

Abstract: According to some example embodiments, an apparatus includes a buck-boost converter, a first buck converter connected at an output terminal of the buck-boost converter, a second buck converter connected at the output terminal of the buck-boost converter, a first LA including a first supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter, where the first LA is configured to provide a first modulated supply voltage to a first PA of a first transmitter, and a second LA including a second supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the second buck converter, where the second LA is configured to provide a second modulated supply voltage to a second PA of a second transmitter.

Abstract: Various embodiments of charge adjustment techniques for a switched capacitor power converter are described. In one example embodiment, briefly, charge adjustment techniques may include a technique to operate a charge pump so as to reduce electrical transient effects that may occur during charge pump transition operation between a first steady state charge pump operation with respect to a first configuration gain mode and a second steady state charge pump operation with respect to a second configuration gain mode. In some instances, electrical transient effects may occur during charge pump transition operation, at least in part, from a selectable adjustment of charge pump configuration gain with respect to a configuration gain mode.

Abstract: A transient response improving system and method with a prediction mechanism of an error amplified signal are provided. A current sensor circuit senses a current flowing through a first resistor connected between an adapter and an electronic device. When the current is larger than a current threshold, a predicting circuit calculates a target voltage level based on a common voltage and a voltage of the battery and instantly pulls up or down a voltage level of the error amplified signal to the target voltage level. A comparator compares the error amplified signal with a ramp signal to output a comparison signal. A controller circuit controls a driver circuit to switch a high-side switch and a low-side switch according to the comparison signal.

Abstract: A coil device includes a core and a plurality of coils arranged in the core. A distance of a second gap formed by portions of the core located inside at least one of the coils is larger than that of a first gap formed by other portions of the core located between the coils next to each other.