Abstract: Techniques, methods, circuits, and systems are provided for providing stabilization for a circuit. One example system includes a switching converter coupled to a power source; a low-pass filter coupled to a load device; a direct current (DC) path; and an alternating current (AC) path, where the DC path and the AC path are provided between the switching converter and the low-pass filter, and where the AC path provides a non-phased information signal to be used to compensate for a phase delay occurring in the DC path. In a more specific implementation, the DC path can be configured to provide control, at low frequency, for an output to the load device. In addition, an error amplifier can be to the DC path and the AC path, where the low-pass filter and the error amplifier can be configured to determine a switchover between the AC path and DC path.

Abstract: A cooling system and method of cooling electronic components comprising a tank (or other vessel) in which a dielectric liquid cools low power electronic components within the tank, while a conductive liquid cools high power electronic components in the tank. The conductive liquid is supplied via a plurality of cooling modules, each arranged on or in proximity to a high power component. A cooling module arranged within the tank may enclose one or more of the electronic components in the tank using a fluid-tight seal.

Abstract: A power supply control apparatus controls power supply from a DC power source to a load by switching on or off a power supply FET. The current adjustment circuit adjusts the current flowing through the resistor circuit to a value obtained by dividing the voltage between the drain and the source of the power supply FET by the resistance value of the resistor circuit. A drive circuit switches off the power supply FET when a voltage across the detection resistor exceeds a predetermined voltage. The on-resistance value of the power supply FET fluctuates according on the ambient temperature of the power supply FET. The resistance value of the resistor circuit fluctuates in the same direction as the on-resistance value according to the ambient temperature of the power supply FET.

Abstract: An integrated circuit for a power supply circuit that generates an output voltage from an input voltage. The power supply circuit includes a transformer, a transistor controlling an inductor current flowing through a primary coil of the transformer, a first capacitor, and a first diode charging the first capacitor. The integrated circuit is configured to control switching of the transistor. The integrated circuit includes a first terminal configured to receive a voltage across the first capacitor; a second terminal configured to receive a feedback voltage corresponding to the output voltage; a driving signal output circuit configured to output a driving signal to increase a switching period of the transistor, in response to a decrease in a load current; a driver circuit configured to drive the transistor in response to the driving signal; and a determination circuit configured to determine whether the power supply voltage drops below a first voltage.

Abstract: A DC high voltage cut-off device includes at least one cut-off module, having: a main cut-off apparatus in a main branch, a general surge protector in an absorption branch, and a changeover branch, with at least one changeover capacitor wherein: a first plasma tube switch in the changeover branch, a pre-charge circuit of the changeover capacitor, a changeover surge protector, in parallel with the changeover capacitor, and having a protection voltage lower than a nominal operating voltage of the cut-off module and, by at least one pilotable switch which supplies the first plasma tube switch with a voltage derived from an electric voltage between the armatures of the changeover capacitor.

Abstract: A transient voltage protection device includes an element body formed with a cavity inside, a pair of external electrodes on the element body, and a pair of internal electrodes in the element body. The pair of internal electrodes oppose each other. Each internal electrode is connected to a corresponding external electrode of the pair of external electrodes. The element body includes a first inner surface and a second inner surface. The first and second inner surfaces define the cavity and oppose each other. The pair of internal electrodes are exposed to the cavity and disposed on the first inner surface. In a cross section along a direction in which the first inner surface and the second inner surface oppose each other, the first inner surface includes a contour different from a contour included in the second inner surface.

Abstract: The present disclosure provides a switching mode power supply including a feedback circuit unit receiving one of the output voltages as feedback and calculating a compensation voltage for constantly controlling the output voltages, a control unit controlling on/off a duty ratio of the semiconductor switch conducting or cutting off the input circuit according to the compensation voltage, and a protection circuit unit receiving one of the plurality of output voltages to determine whether the feedback circuit unit fails and configured to cut off power of to the control unit when the feedback circuit fails.

Abstract: An isolated DC-DC converter is provided. The isolated DC-DC converter includes a full-bridge switching stage, a resonant network, a transformer, an output stage, an isolated charge sensor and a switch controller. The full-bridge switching stage has at least four active switches. The resonant network has a plurality of inductors and plurality of capacitors. The transformer is connected to the resonant network. The output stage is connected to the transformer and is configured to generate an output voltage or current. The isolated charge sensor is connected to the resonant network to generate a resonant inductor current charge signal. The switch controller generates and provides control signals to the at least four active switches based on at least the resonant inductor current charge signal and the output voltage or current.

Abstract: Provided by the present disclosure are a power supply circuit and a charging device. The power supply circuit comprises a pulse transformer circuit and a first power supply conversion circuit. The pulse transformer circuit comprises a pulse transformer and a switch control circuit; a primary winding of the pulse transformer is connected to a power supply and is connected to the switch control circuit, and the switch control circuit is used to modulate the voltage on the primary winding into a pulse voltage; and the input terminal of the first power supply conversion circuit is connected to a secondary winding of the pulse transformer, and is used to transform the voltage on the secondary winding of the pulse transformer into a first preset voltage range when the voltage outputted by the secondary winding exceeds the first preset voltage range, and then output the voltage.

Abstract: Controlling power factor correction (PFC) in a secondary-controlled alternating current (AC) to direct current (DC) (AC-DC) power adapter is described. In one embodiment, an apparatus includes a transformer, a primary-side controller coupled to the transformer, a PFC component coupled to the primary-side controller, and a secondary-side controller coupled to the transformer. The secondary-side controller is configured at least to obtain data informative of an amount of power, and control, based on the amount of power, a PFC operating mode of the PFC component.

Abstract: The present invention provides a power factor correction (PFC) and DC-DC multiplexing converter and an uninterruptible power supply including the same. The multiplexing converter includes a multiplexing bridge arm and a battery hookup bridge arm. During power supply of a battery, the converter controls one electrode of a positive electrode and a negative electrode of the battery to be alternately connected to a neutral point and one of positive and negative direct current buses that has the same polarity as the electrode, to enable a level of the electrode of the battery to synchronously and alternately rise or drop with the alternate supply of power to the positive and negative direct current buses; or controls one electrode of a positive electrode and a negative electrode of the battery to be constantly connected to the neutral point.

Abstract: A controller for a power converter, a corresponding power converter and a corresponding method are provided. The controller for a power converter includes a rectifier configured to receive an alternating current input signal and output rectified half waves, an output capacitor and a current control device is coupled between the rectifier and the output capacitor. After reaching a first maximum voltage, power flowing is gradually reduced, and later the current provided to the output capacitor is gradually ramped up.

Abstract: A power conversion system in which a converter and an inverter are coupled to each other via a DC coupling unit that has an inductance component is provided. A switching frequency of each of the converter and the inverter is set to be the same and the switching frequency is set to be higher than a resonance frequency of a resonance circuit that includes a first capacitor, a second capacitor, and the DC coupling unit such as a cable. A switching operation of at least one of the converter or the inverter is controlled such that phases of predetermined components of voltage ripples, at the first capacitor and the second capacitor, that are respectively generated by switching operations of the converter and the inverter are substantially matched.

Abstract: Embodiments of this invention provide a voltage output test circuit, a voltage divider output circuit, and a memory. The voltage output test circuit includes: a first voltage divider unit, including a first terminal and a second terminal, where the first terminal of the first voltage divider unit is connected to a test power supply, and the second terminal of the first voltage divider unit is connected to an output terminal; a second voltage divider unit, including a first terminal and a second terminal, where the first terminal of the second voltage divider unit is connected to a ground, and the second terminal of the second voltage divider unit is electrically connected to the output terminal; and a third voltage divider unit, configured to adjust a resistance between the output terminal and the ground.

Abstract: An apparatus for generating a steady state positive voltage (PVS) signal and a steady state negative voltage (NVS) signal is presented. The apparatus includes a bias signal generation module for generating a steady state reference voltage signal (RVS) based on a varying supply voltage signal (VDD), the RVS having a voltage level less than the PVS. The apparatus further includes a positive signal generation module (PSGM) generating the PVS, the PSGM including a first capacitor, the PSGM employing the first capacitor to generate a portion of the PVS based on the RVS. The apparatus further includes a negative signal generation module (NSGM) generating the NVS, the NSGM including a second capacitor, the NSGM employing the second capacitor to generate a portion of the NVS based on the RVS.

Abstract: In a method for coordinating a distribution grid of different levels of electromechanical switches and automatically electrically closable apparatuses in a DC circuit, the distribution grid is arranged between feed-in devices and loads and includes at least one busbar. Each of the apparatuses includes an electrical switch to open or close the DC circuit, a fault current detection device, a tripping unit, and a pre-charging apparatus.

Abstract: In a power converter, a switching network having switches that operate at a common frequency and duty cycle interconnects circuit elements. These circuit elements include capacitors that are in a capacitor network and a magnetic filter. When connected to the capacitors by a switch from the switching network, the magnetic filter imposes a constraint upon inter-capacitor charge transfer between the capacitors to maintain the filter's second terminal at a voltage. The switching network transitions between states. These states include a first state, a second state, and a third state. In both the first state and the third state, the first magnetic-filter terminal couples to the capacitor network. In the second state, which occurs between the first and third state, the switches ground the first magnetic-filter terminal.

Abstract: Various examples are provided related to switching methods for regulating resonant switched-capacitor converters (RSCCs). In one example, a method includes operating switches of the RSCC in a repeated asymmetric sequence of switching states per switching cycle. The repeated asymmetric sequence can include at least three switching states selected from five defined switching states including an idle state. For example, repeated asymmetric sequence can consist of four switching states selected from the five defined switching states. In another example, a method includes operating switches of the RSCC in a repeated sequence of switching states per switching cycle. The repeated sequence can include six switching states selected from five defined switching states with at least one of the five defined switching states occurs twice in the six switching states. For example, the repeated sequence can consist of each of the five defined switching states with the idle state occurring twice.

Abstract: According to one aspect, embodiments of the invention provide an electrical-converter system comprising a printed circuit board including at least a first layer and a second layer, a switching node disposed on the second layer, a first transistor, a second transistor, a third transistor, and a fourth transistor disposed on the first layer, a first conduction path from a source of the first transistor, through the switching node, to a drain of the fourth transistor, the first conduction path having a first length, and a second conduction path from the source of the first transistor, through the switching node, to a drain of the second transistor, the second conduction path having a second length, wherein the first length of the first conduction path is greater than the second length of the second conduction path.

Abstract: A system for managing power delivery and power flow in a distribution grid having grid forming capability is disclosed. The system includes a connect-disconnect switches operable to connect a power transmission grid to and disconnect the power transmission grid from the distribution grid. The distribution grid includes renewable energy generators and a number of loads. The system further includes a full bridge shunt inverter system connected to the distribution grid. The full bridge shunt inverter system includes a four-quadrant DC-to-AC inverter and at least a battery for power storage and operable as a power source for grid formation. The system further includes a pair of active filters connected in series on the distribution grid. The full bridge shunt inverter system is connected to the distribution grid at a node between the active filters to enable impedance adjustment for managing and controlling the power flow in the distribution grid.