Abstract: A power conversion device includes a power conversion unit to convert an input power into an output power, a regular controller to perform control of the power conversion unit, and a protective controller to perform protective operation of the power conversion unit. The regular controller, on the basis of current command value in accordance with a target value of an output of the power conversion unit and an output current of the power conversion unit, for example, outputs a control signal to control on-off switching of switching elements included in the power conversion unit. When at least one value corresponding to the output power of the power conversion unit is not within the target power range determined in accordance with the target value of the output, the protective controller stops the power conversion by the power conversion unit.

Abstract: A circuit arrangement for filtering an electric current, wherein the circuit arrangement is arranged between a power source providing the electric current and a load; and the electric current includes a first current component and a second current component. The circuit arrangement includes a first circuit arranged to receive and filter the first current component, a current control device arranged to receive and regulate the second current component so as to provide a regulated current to the load, and a control circuit arranged to provide a control signal to the current control device so as to control regulation of the second current component. The control circuit is further arranged to detect one or more operation parameters associated with the current control device, and to determine the control signal based on the one or more detected operation parameters.

Abstract: To improve the accuracy of detecting a current flowing through an electric compressor after operation of the electric compressor, the electric compressor having a large change in temperature before and after operation. An inverter-integrated electric compressor (1) that compresses and discharges a refrigerant suctioned therein, includes an inverter device (2) provided with a circuit board (60) mounted with an inverter circuit (40), the inverter device (2) being integrally incorporated in an inverter case. The circuit board (60) is provided with a current detection circuit (30) that detects an input current flowing through the inverter circuit (40), and an offset correction circuit (20). The current detection circuit (30) includes a shunt resistor (32) that is serially connected to the inverter circuit (40) and detects a current, and a first amplifier (31) that amplifies and outputs a voltage appearing as a voltage drop in the shunt resistor (32).

Abstract: An example system includes a failure detection circuit. The failure detection circuit is to detect a failure of a first power source electrically coupled to a first load. The failure detection circuit is to output a first signal indicating the detection of the failure of the first power source. The system also includes a current regulating circuit. The current regulating circuit is electrically coupled to the failure detection circuit. The current regulating circuit is to electrically couple a second power source to the first load based on the first signal output by the failure detection circuit. The current regulating circuit is to restrict a first current from the second power source.

Abstract: A multi-mode circuit has a first switch, a second switch, a third switch and a fourth switch. A current sampling circuit applied to the buck-boost has a first sampling circuit, a second sampling circuit and a current processing circuit. The first sampling circuit generates a first sampling current by sampling the current flowing through the first switch, the second sampling circuit generates a second sampling current by sampling the current flowing through the second switch, and the current processing circuit generates a third sampling current based on the first sampling current and the second sampling current. An average value of the third sampling current of one cycle represents the output current of the multi-mode circuit.

Abstract: An input circuit includes an input line for providing input regarding state of a supply at a first node. An impedance is connected to the input line at a second node for connecting the input line to ground. A Zener diode can be connected in the input line in series between the first and second nodes to impede current flowing through the Zener diode below the Zener voltage thereof in a direction from the first node to the second node, and to allow current above the Zener voltage thereof in the direction from the first node to the second node, wherein the input line is free of any node connecting a power voltage source to the input line between the first and second nodes.

Abstract: A power converter with a modular, compact architecture with a reduced component count is disclosed. The power converter includes parallel power conversion sections and utilizes one or more mutual coupling input inductors with multiple windings. The windings are connected in pairs in a differential mode between a power source and the parallel power conversion sections. Each power conversion section receives the same input voltage and generates the same output voltage. As a result of the winding connections and the same input and output voltages, the input of the power converter exhibits current balancing and sharing between each branch of the parallel configuration, allowing a single current sensor to provide a measurement of the current and a single controller to control operation of each of the power conversion sections.

Abstract: A method and system for synchronized switching of voltage regulators in an IHS. The method includes determining, via a master voltage regulator (VR) controller, a plurality of phase shifts for a plurality of VRs configured as a master VR and at least one slave VR. The phase shifts are determined such that the VRs switch at different times from each other. A common clock signal and the phase shifts are transmitted to each of the slave VRs.

Abstract: A bias current circuit which includes: a main unit including first PMOS and NMOS transistors constituting a first current path, and second PMOS and NMOS transistors constituting a second current path together with a first resistor; an output unit; and a supply voltage adapting unit including a third MOS transistor, a pull-up current source and a pull-down current source. The third MOS transistor is connected between a first node to which gates of the first and second PMOS transistors are connected and a second node to which drains of the second NMOS and PMOS transistors are connected. The pull-up current source is mirrored to the first PMOS transistor and configured to provide a current equal to a current provided by the pull-down current source. The bias current circuit has an operating voltage range encompassing low-voltage band such that it is operable at high and low voltages.

Abstract: A control module for a flyback power converting device is coupled between a primary side winding of the flyback power converting device and a power end and includes a switch unit coupled to the primary side winding; wherein the control module conducts a connection between the primary side winding and the power end when the switch unit is disconnected; wherein the power end is able to provide an operation current to the control module.

Abstract: The present disclosure relates to a circuit for providing a current from a source to a load. A commutation cell includes a main switch that controls a voltage applied by the source to the load. An opposite switch maintains the current in the load when the load is disconnected from the source by the main switch. The opposite switch returns the load current to the main switch when the main switch connects again the load to the source. The disclosed circuit configuration reduces recovery current, losses and electromagnetic losses. A synchronizing controller controls opening and closing sequences of the main switch and of the opposite switch. The disclosed circuit can provide a DC-DC voltage converter. Combining two such circuits can provide a DC-AC voltage converter.

Abstract: A drive circuit includes a transient detector that includes a detector input to receive a loop error signal from a phased locked loop (PLL) and generates a transient detected output signal if a transient is detected in an alternating current (AC) input voltage. A controller includes a controller input to receive the transient detected output signal from the transient detector and a feedback input to sense the AC input voltage provided to a bridge circuit. The controller is configured to apply a PLL angle output signal from the PLL to control switch output signals to the bridge circuit if the transient detected output signal is not generated and configured to apply the AC input voltage sensed from the feedback input to control the switch output signals to the bridge circuit if the transient detected output signal is generated.

Abstract: A voltage regulator includes a power stage electrically coupled to an input voltage terminal, a controller for controlling the power stage and a shunt resistor of a sense network connected in series between the input voltage terminal and the power stage. In a non-calibration mode, a first level shifting resistor of the sense network is electrically connected in series between a first terminal of the shunt resistor and a first sense pin of the controller and a second level shifting resistor of the sense network is electrically connected in series between a second terminal of the shunt resistor and a second sense pin of the controller. In a calibration mode, the first sense pin and the second sense pin of the controller are electrically connected to the same terminal of the shunt resistor via the first level shifting resistor and the second level shifting resistor of the sense network.

Abstract: To improve the accuracy of detecting a current flowing through an electric compressor after operation of the electric compressor, the electric compressor having a large change in temperature before and after operation. An inverter-integrated electric compressor (1) that compresses and discharges a refrigerant suctioned therein, includes an inverter device (2) provided with a circuit board (60) mounted with an inverter circuit (40), the inverter device (2) being integrally incorporated in an inverter case. The circuit board (60) is provided with a current detection circuit (30) that detects an input current flowing through the inverter circuit (40), and an offset correction circuit (20). The current detection circuit (30) includes a shunt resistor (32) that is serially connected to the inverter circuit (40) and detects a current, and a first amplifier (31) that amplifies and outputs a voltage appearing as a voltage drop in the shunt resistor (32).

Abstract: A control device for a step-up converter which controls the step-up converter connected between a load and a DC power source, the control device includes a voltage control unit, a current command generation unit, a duty estimator, and a pole zero cancellation control unit. The voltage control unit performs a control arithmetic operation on the basis of a calculated value, obtained by performing a proportional arithmetic operation and an integration arithmetic operation on a difference between a voltage value on the load side and a voltage command value, and a value generated by the pole zero cancellation control unit. The current command generation unit generates a reactor current command value on the basis of an arithmetic result of the voltage control unit and a reciprocal of a duty estimation value.

Abstract: A smart power supply system is provided. An input end connecting to a power supply provides power to a control module, so that the control module can receive an application voltage range from an electronic product, and then control a power module according to the application voltage range to make an output voltage value of an output end increased gradually according to the application voltage range from low to high. In the process that the output voltage value of the output end is increased gradually, the control module detects an input voltage value and an input current value and the output voltage value to calculate and store an input power correspondingly, and then control the power module according to the output voltage value, which corresponds to the minimum input power of the stored input powers to make the output voltage value of the output end be an optimum voltage value.

Abstract: Voltage converter including at least: a boost circuit to convert an input voltage Vin to an output voltage Vout, a setpoint for the output voltage Vout is, by a fixed additional value Vf, larger than the input voltage Vin, and the fixed additional value is independent of the input voltage Vin measurement circuit emits an electrical trigger signal based on a difference between the output voltage Vout and the input voltage Vin, and a trigger circuit adjusts the output voltage Vout depending on the electrical trigger signal.

Abstract: A neutral point clamped multiple-level switching unit is disclosed, including four series-connected switches, where the electric path in the four switches approximately follows a T shape, two of the switches located in the middle of the series association being arranged in the foot of the T.

Abstract: A voltage regulator apparatus includes operational amplifier, first resistor, second resistor, driving transistor, amplifier circuit, and output circuit. The operational amplifier has first input terminal coupled to reference voltage, second input terminal, and output terminal. The first resistor has first terminal coupled to second input terminal. The second resistor is coupled between first resistor and ground level. The driving transistor has control terminal coupled to output terminal of operational amplifier and first terminal coupled to second terminal of first resistor. The amplifier circuit is coupled to output terminal of operational amplifier and configured to sense output voltage of voltage regulator apparatus to amplify the sensed voltage with specific gain to regulate a transistor of output circuit. The transistor has control terminal controlled by amplifier circuit. The output voltage is generated at first terminal of the transistor.

Abstract: To provide a further miniaturized and densified current detection device or a power conversion apparatus including the same. A current detection device or a power conversion apparatus according to the present invention includes: a plurality of conductors corresponding to currents of a plurality of phases; and a current sensor. The plurality of conductors is formed so as to have a conductor portion in which the currents flowing in the plurality of conductors, respectively, are substantially parallel. In a cross section in a direction perpendicular to a flow direction of the current of the conductor portion, the current sensor is arranged in a region sandwiched between the plurality of conductor portions, and outputs information on a current flowing in the conductor based on a combination of magnetic field vectors generated by the plurality of currents.