Abstract: One example discloses a power management circuit, including: a voltage reference circuit including a bandgap circuit coupled to and configured by a first trimming circuit; an undervoltage lockout (UVLO) circuit coupled to and configured by a second trimming circuit; wherein the first trimming circuit and the second trimming circuit are configured to receive a single trim control setting.

Abstract: A high-voltage DC transformation apparatus, a power system and a control method of the power system. The high-voltage DC transformation apparatus is electrically connected to at least one high-voltage DC power generator. The high-voltage DC transformation apparatus includes at least one bidirectional AC/DC conversion module, at least one first transformer and at least one unidirectional rectifier module. A DC terminal of the bidirectional AC/DC conversion module is electrically connected to the corresponding high-voltage DC power generator. The first transformer includes a first transmission terminal and a second transmission terminal. The first transmission terminal is electrically connected to an AC terminal of the corresponding bidirectional AC/DC conversion module. The unidirectional rectifier module includes an input terminal and an output terminal.

Abstract: A stacked half bridge converter may be configured to provide an AC output voltage from either a DC or an AC input voltage. The switching devices of the converter may be operated according to a plurality of switching sequences, each switching sequence including one or more switching patterns, each switching pattern including one or more switching states of the switching devices. The switching sequences, patterns, and states may be selected to improve operation of the converter, by regulating the voltage at a neutral point of the converter to reduce ripple, increase switching efficiency, protect the switching devices from overvoltages, and the like.

Abstract: An intelligent architecture system is provided. The intelligent architecture system includes an input line, an output line and an intelligent architecture operably interposed between the input line and the output line. The intelligent architecture is configured to control a voltage of the output line in accordance with a voltage of the input line.

Abstract: Methods and devices for speeding up the onset of a target current through an output leg of a current mirror are presented. Upon activation of the current mirror, a pre-charge current is sourced to a node of the current mirror that is common to the output leg and an input leg of the current mirror. Sourcing of the pre-charge current is based on sensing, by a first transistor, of a voltage at the common node. Pre-charging of the common node continues up to a cutoff voltage sensed at the common node. Sourcing of the pre-charge current is provided by a second transistor coupled to the common node. Based on the voltage sensed at the common node, the first transistor controls the sourcing of the pre-charge current by the second transistor. Such control is based on a portion of a current from a current source that flows through the first transistor.

Abstract: An inductive current simulation circuit of a switching circuit, an inductive current simulation method of the switching circuit, and a switched-mode power supply are provided. The inductive current simulation method includes the following steps: based on an error amplification circuit, performing, by the error amplification circuit, an error amplification on a first sampling signal representing a current of a synchronous rectifier and a second sampling signal representing an inductive current simulation signal when the synchronous rectifier is turned on to obtain an error amplification signal; and reconstructing an inductive current according to the error amplification signal when the synchronous rectifier is turned on and a first current when a main power transistor is turned on to obtain the inductive current simulation signal.

Abstract: A controller used in a resonant converter having a switching circuit and a resonant tank. The switching circuit has a high side switch and a low side switch. The controller has a feedback processing circuit for providing a reference signal based on a feedback signal. The reference signal changes at a first slope based on the feedback signal when the feedback signal is higher than a first voltage threshold, and the reference signal changes at a second slope based on the feedback signal when the feedback signal is lower than the first voltage threshold. The turning off of the high side switch is controlled by a high side off signal, which is generated based on the reference signal and a voltage sampling signal indicative a voltage across a resonant capacitor of the resonant tank.

Abstract: A voltage converter including first to fourth switches between a first voltage node and ground, fifth to eighth switches between the first voltage node and the ground, a first floating capacitor between a first node between the first and second switches and a second node between the third and fourth switches, a second floating capacitor between a third node between the fifth and sixth switches and a fourth node between the seventh and eighth switches, a ninth switch between a second voltage node and a center node, a first inductor between the second node and a third voltage node, a center capacitor between the center node and the ground, a tenth switch between the second voltage node and the third voltage node, a first capacitor between the third voltage node and the ground, and a second capacitor between the second voltage node and the ground may be provided.

Abstract: The present disclosure provides a power supply control device. The power supply control device includes a feedback voltage generator, an on-timing setting unit and an off-timing setting unit. The feedback voltage generator is configured to generate a feedback voltage by sampling a primary voltage of a transformer that forms an insulated switching power supply. The on-timing setting unit is configured to turn on a primary current of the transformer based on a comparison result between the feedback voltage and a slope-shaped reference voltage. The off-timing setting unit is configured to turn off the primary current after a predetermined on time has elapsed since the primary current was turned on. A sampling timing of the primary voltage is set based on an on timing of the primary current.

Abstract: An energy storage MMC topology is proposed to avoid the microcirculation of battery. The topology consists of six bridge arms in three stages and can be connected to DC system and AC system. Each bridge arm is composed of one bridge arm inductance and N energy storage sub-modules with the same structure in series. The energy storage sub-modules include a half-bridge power module, a battery energy storage module and a group of anti-parallel thyristors. The group of anti-parallel thyristors is connected in series over the DC cable between the battery energy storage module and a capacitor of the half-bridge power module. The switching control is performed on the battery in the energy storage MMC according to the systematic operating mode.

Abstract: The present disclosure provides a three-level rectification DC/DC converter including primary and secondary circuits and a resonant tank circuit. A voltage between two primary terminals is a first voltage. The secondary circuit includes a switch bridge arm and a capacitor bridge arm. The switch bridge arm includes four switches serially connected. A node between the first and second switches is connected to the first secondary terminal, a node between the third and fourth switches is connected to the second secondary terminal, and a node between the second and third switches is connected between two capacitors of the capacitor bridge arm. In two consecutive periods of the first voltage, the first and fourth switches are in an on state for a preset time length after two falling edges respectively, and the second and third switches are in the on state for the preset time length after two rising edges respectively.

Abstract: An embodiment electronic device includes a first circuit including first and second transistors series-coupled between a node of application of a power supply voltage and a node of application of a reference voltage, the first and second transistors being coupled to each other by a first node, and a second circuit, configured to compare a first voltage on the first node with first and second voltage thresholds.

Abstract: The present application provides a power supply system for supplying power to network device, comprising power supply module, housing, and stereoscopic accommodating space therebetween. The power supply module without a fan comprises: a primary circuit comprising at least one primary switch and configured to receive AC input voltage and convert the AC input voltage into a first voltage; a transformer comprising primary and secondary windings and configured to convert the first voltage into a second voltage, the primary winding is coupled to the primary circuit; and a secondary circuit comprising at least one secondary switch and configured to convert the second voltage into a DC output voltage for the network device, the secondary circuit is coupled to the secondary winding, the secondary switch adopts SMT package, and power density of the power supply module is 60 W/inch3 or more. The stereoscopic accommodating space is filled with liquid coolant for cooling.

Abstract: A controller of an isolated switching converter having a primary and secondary switch, the controller includes a valley detection circuit for providing a valley pulse signal in response to valleys of a resonant voltage, a pulse frequency modulation circuit for providing a pulse frequency modulation signal based on a feedback signal indicative of an output voltage, a primary on enable circuit for providing a primary on enable signal based on the pulse frequency modulation signal and valley pulse signal, a secondary logic circuit for generating a secondary control signal to control the secondary switch based on a primary off detection signal, a zero cross detection signal and the primary on enable signal, and a primary logic circuit for generating a primary control signal to control the primary switch based on a synchronous signal electrically isolated from the primary on enable signal.

Abstract: Methods and systems for a synchronverter power control during unbalanced grid conditions is disclosed. The system includes a synchronverter coupled with a power supply grid, a power reference generator, configured to receive a terminal voltage measurement vector vt and a current measurement vector i from the synchronverter, and generate an active power Pf and a reactive power Qf, a synchronverter control unit connected to the power reference generator and configured to process the active power Pf and the reactive power Qf and generate an electromotive force (EMF) vector e, and an active and reactive power control unit, connected between the synchronverter control unit and the synchronverter, configured to receive the electromotive force (EMF) vector e and the terminal voltage measurement vector vt, and regulate the current measurement vector i to eliminate power oscillations and current harmonics in the synchronverter during unbalanced grid conditions.

Abstract: According to an embodiment, a bandgap type reference voltage generation circuit includes a first node that is connected to an output terminal, second and third nodes that are connected to current sources, a fourth node, first and second bipolar junction transistors with bases that are connected to the first node, a third bipolar junction transistor that is provided with an emitter-collector path that is connected between the second node and the fourth node and amplifies an output current of the first bipolar junction transistor, and a fourth bipolar junction transistor that is provided with an emitter-collector path that is connected between the third node and the fourth node and amplifies an output current of the second bipolar junction transistor.

Abstract: A circuit includes two thyristors coupled in anti-series. An AC capacitor has first and second electrodes respectively coupled to two different electrodes of the two thyristors. The first and second electrodes are coupled to receive an AC voltage. A control circuit detects discontinuance of application of the AC voltage to the AC capacitor and in response thereto simultaneously applies same gate currents to the two thyristors. A current path through the two thyristors (one passing current in forward mode and the other in reverse mode) discharges a residual voltage stored on the AC capacitor.

Abstract: A half-bridge electronic device comprises, in series, a low level switch and a high level switch connected at a central point, and respectively controlled by a first and a second activation/deactivation signal. The device comprises: a first and a second synchronization system configured to interpret a variation in the voltage at the central point, respectively along a falling edge and along a rising edge, and to respectively generate a first and a second synchronization signal separate from the first; a first and a second AND type logic gate respectively combining the first synchronization signal with a first control signal and the second synchronization signal with a second control signal, in order to respectively form the first and second activation/deactivation signals.

Abstract: A multilevel stage of a bidirectional AC power converter, comprising: a set of switches in series, a set of capacitors in series, the set of capacitors being in parallel with the set of switches; a number of sets of diodes in series; a center tap along the set of switches in series; and a pair of taps, respectively after the first and before the last switch of the set of switches in series; wherein each node between respective capacitors is connected to a node between respective diodes. A converter first stage for a 3-level converter has 6 switches, two capacitors, and two diodes, with the junction between diodes connected to the junction between capacitors, and the diode legs between switches 2-3 and 4-5. The center tap is between switches 3-4, and the pair of taps between switches 1-2 and 5-6.

Abstract: An electric safety circuit for an aircraft DC power supply circuit includes a first electric line connecting a first electric pole of a main DC power supply with a first electric connector of an electric load; a second electric line connecting a second electric pole of the main DC power supply with a second electric connector of the electric load; at least one electric safety switch arranged in at least one of the first and second electric lines and configured for selectively interrupting any electric current flowing through said at least one electric line; a first electric coil arranged in the first electric line.