Abstract: A system includes: an alternating current (AC) to direct current (DC) converter (AC-DC converter), the AC-DC converter including a bulk capacitor; a DC-DC converter connectable to the AC-DC converter; and one or more controllers configured to control the system by performing operations, the operations including: determining a current demand of a load, the load being connectable to the DC-DC converter, for a charging cycle of the load; performing a first comparison of the current demand to one or more current demand thresholds; and generating a voltage setpoint for the bulk capacitor based on the first comparison, wherein the generation of the voltage setpoint limits output current ripple of the DC-DC converter for the charging cycle.

Abstract: A switch control circuit configured to control a first switch having a first terminal to which a first voltage is applied, and a second switch having a first terminal connected to a second terminal of the first switch and a second terminal to which a second voltage lower than the first voltage is applied. The switch control circuit includes: a first sampling/holding circuit configured to sample and hold a switch voltage generated at a connection node between the first switch and the second switch when the second switch is turned off; a first comparison circuit configured to compare the switch voltage sampled and held by the first sampling/holding circuit with a first constant voltage; and a first dead time adjustor configured to adjust a dead time when the switch voltage rises according to an output of the first comparison circuit.

Abstract: A power supply device and a control method for the same are disclosed. The method comprises: controlling, when there is the abnormal situation in the first input power supply, a first access point of a first relay and a third access point of the first relay to be disconnected, a second access point of the first relay and a fourth access point of the first relay to be disconnected, a common access point of a third relay and a second access point of the third relay to be connected, a common access point of a fourth relay and a second access point of the fourth relay to be connected, a first access point of a second relay and a third access point of the second relay to be connected, and a second access point of the second relay and a fourth access point of the second relay to be connected.

Abstract: A DCDC circuit according to an embodiment includes a capacitor network, and a smoothing capacitor. The capacitor network includes a first state in which first capacitors are connected onto a wiring path between an input node to which an input voltage is applied and one end of a first coil and a second capacitor is connected between a connection point of the first capacitors on the wiring path and a reference potential point, and a second state in which the second capacitor is connected to one end of a second coil and the first capacitors are connected between one end of the second capacitor and the reference potential point and between the other end of the second capacitor and the reference potential point, respectively.

Abstract: A system to deliver auxiliary or startup current at a low voltage side from a higher voltage input side is provided which comprises a SIDAC or voltage-breakover switch and an inductor to transfer energy from the high voltage input side to the low voltage side. The system further comprises capacitors at the high voltage input and low voltage sides. The SIDAC or voltage-breakover switch turns on when the voltage across it exceeds a specific value and initiates a current pulse through the inductor for transferring energy from the high voltage input side capacitor to the low voltage side. The voltage breakover rating of the SIDAC or voltage-breakover switch is selected to be in between the voltage levels of the high voltage input side and the low voltage side.

Abstract: The present disclosure relates to a modular multi-level converter, wherein a cluster comprises multiple sub-modules connected to each other in series and multiple individual reactors connected to the respective sub-modules in series, and the multiple individual reactors are disposed between the multiple sub-modules, respectively. Therefore, the converter of the present invention is advantageous in that the volume thereof can be further reduced compared with when a conventional large-capacity reactor is used.

Abstract: A clocked buck-boost converter includes two switch elements and an inductor and via which an input voltage is converted into a regulated output voltage, wherein a first switch element or buck converter switch element is clocked using a first control signal, and a second switch element or boost converter switch element is clocked using a second control signal, where the first and second control signals are derived from a regulator manipulated variable from a regulating unit, first and second manipulated variables are generated for the first and second control signals, the regulator manipulated variable is amplified, an offset value is derived, and the two manipulated variables are then compared with a sawtooth signal and the two switch elements of the buck-boost converter are actuated or clocked in a corresponding manner to generate the first or second control signal.

Abstract: A power facility for remote control includes: an analog sensing value reception unit that collects an internal analog sensing value of the power facility; a digital conversion unit that converts the analog sensing value into digital information; and a communication unit that transmits the digital information to an external remote control device by using one optical path. Therefore, by allowing a plurality of analog sensing values from the power facility to be transmitted to the remote control device by using one optical path, transmission efficiency can be increased, and by converting a plurality of analog sensing values of the power facility into digital information and transmitting the digital information with an asynchronous frame, the plurality of analog sensing values can be efficiently transmitted through one optical path without a separate synchronous signal.

Abstract: The present application relates to the field of power electronics technology control, and discloses a temperature control method for a power supply conversion chip, a related assembly, and a multi-phase power supply apparatus. A real-time average value of current temperature accumulation values of power supply conversion chips is calculated, and the output current of the power supply conversion chip whose current temperature accumulation value is not equal to the real-time average value is increased or decreased. The temperature of a power supply conversion chip increases as the output current increases and decreases as the output current decreases, and the temperature of the power supply conversion chip changes under a condition that the output current of the power supply conversion chip is adjusted.

Abstract: A power converter including transistors, a converter controller, and a functional safety controller that outputs a gate drive allowing signal. Further, there is shutoff circuitry that outputs a result of a logical conjunction using the gate pulse and the gate drive allowing signal as a drive signal, gate drive circuitry that outputs a gate signal on the basis of the drive signal, and a current detector that detects current flowing through a phase including the transistors and outputs a current value. After confirming on the basis of the current value and the gate signal that the gate signal changes to an on state during a period of no current flow through the transistor, the functional safety controller puts the gate drive allowing signal into a temporarily off state while the gate pulse is on and determines whether or not the gate signal changes to an off state.

Abstract: Several current sensing techniques are described that may be used to obtain an accurate current signal, which may help to achieve the best performance with a trans-inductor voltage regulator (TLVR) topology. The techniques may have the coupling effect from the secondary side included, so the current sensing signal is accurate for the regulation and other functions related to the current signal. The current sensing techniques may have more accurate gain and phase information in the middle frequency and high frequency ranges. The coupling effect from the secondary side may be well represented in the current sensing signal. The advantages of TLVR topology may be enhanced with accurate current information.

Abstract: An air conditioning device includes a buck converter which comprises a switching device, an inductor, a diode and at least one capacitor. The diode is a SiC diode, and the buck converter further includes an attenuator associated to the SiC diode and a ferrite bead associated to the switching device.

Abstract: A composite circuit protection device includes a positive temperature coefficient (PTC) component, first and second conductive leads, a solder and a diode component that is connected to the PTC component through the solder. The solder includes a first alloy material having a first melting point, and a second alloy material having a second melting point that is lower than the first melting point. Each of the first and second melting points is independently greater than 190° C. and lower than 308° C. The first and second conductive leads are respectively bonded to the PTC component and the diode component.

Abstract: A voltage regulator includes a control circuit configured to output a plurality of enable signals, and a power stage including a plurality of phase circuits. Each phase circuit of the plurality of phase circuits includes a node, an inductor coupled between the node and an output node of the voltage regulator, a plurality of p-type transistors coupled between the node and a power supply node of the voltage regulator, and a plurality of n-type transistors coupled between the node and a reference node of the voltage regulator. Each phase circuit of the plurality of phase circuits is configured to, responsive to the plurality of enable signals, selectively couple the node to the power supply node through a first subset or all of the plurality of p-type transistors, and selectively couple the node to the reference node through a second subset or all of the plurality of n-type transistors.

Abstract: The disclosure provides an inverter device for driving an electric motor, including: an inverter circuit including a plurality of switching elements; and a control circuit controlling the inverter circuit. When a rotation speed of the electric motor is equal to or less than a preset rotation speed threshold and a torque of the electric motor is equal to or greater than a preset torque threshold, the control circuit changes a temperature estimation logic of the switching elements of the inverter circuit.

Abstract: A voltage regulator circuit is provided. The voltage regulator circuit includes a voltage regulator configured to provide an output voltage at an output terminal. A plurality of macros are connectable at a plurality of connection nodes of a connector connected to the output terminal of the voltage regulator. A feedback circuit having a plurality of feedback loops is connectable to the plurality of connection nodes. The feedback loop of the plurality of feedback loops, when connected to a connection node of the plurality of connection nodes, is configured to provide an instantaneous voltage of the connection node as a feedback to the voltage regulator. The voltage regulator is configured, in response to the instantaneous voltage, regulate the output voltage to maintain the instantaneous voltage of the connection node approximately equal to a reference voltage.

Abstract: In some embodiments, a power converter circuit included in a computer system magnetizes and de-magnetizes an inductor coupled to a switch node using high-side and low-side switches to alternatively couple a switch node to an input power supply node and a ground supply node. In response to detecting a drop in the voltage level of the input power supply node, the power converter circuit may adjust an on-resistance of the high-side switch to maintain performance at the lower voltage level of the input power supply node.

Abstract: A multi-phase constant-on-time (COT) system includes a first point-of-load converter configured to provide a first current and a second point-of-load converter configured to provide a second current, and a bus configured to exchange information between the first point-of-load converter and the second point-of-load converter.

Abstract: The present application provides a synchronous rectification circuit, which adopts a multiplexer that selectively inputs a first reference signal or a second reference signal to a comparator by coupling the first and second reference signal. A comparing signal is generated to a switch element by comparing a switch input signal. Hereby, the switch element is under control for synchronous rectification.

Abstract: An on-board battery charger (OBC) includes first and second rails which generate first and second detection signals based on voltage events, such as zero-crossing or peak voltage events, of input voltages supplied to the rail circuits. The OBC includes a relay switchable between (i) an opened state in which the relay disconnects the rails whereby the rails can respectively receive first and second phase input voltages from a multi-phase mains supply and (ii) a closed state in which the relay connects the rails whereby the rails can both receive a same input voltage from a single-phase mains supply. A controller determines from a comparison of the detection signals at the same time whether input voltages received by the rails from a mains supply are out-of-phase or in-phase to determine therefrom whether the mains supply is multi-phase or single-phase and/or whether the relay is properly or improperly opened or closed.