Abstract: A switching power supply and a method for controlling the switching power supply, the switching power supply includes: an input power supply, a front-stage circuit which includes a first inductor and at least two switch devices, and a post-stage isolated circuit which includes a primary-side switch circuit, a transformer and a secondary-side rectification circuit. One end of the first switch device is connected to a positive electrode of the input power supply, one end of the second switch device and an input-end of the first inductor are jointly connected to another end of the first switch device, another end of the second switch device is connected to a negative electrode of the input power supply, an output-end of the first inductor is connected to the primary-side switch circuit of post-stage isolated circuit, and another end of the primary-side switch circuit is connected to another end of the second switch device.

Abstract: A device includes a proportional-to-absolute-temperature (PTAT) current source having a bandgap reference voltage node, and a negative temperature dynamic load having an input terminal electrically connected to the bandgap reference voltage node.

Abstract: A dc link module for a power circuit includes a first connector for connecting to a first power conversion circuit, a second connector for connecting to a second power conversion circuit, wherein the second power conversion circuit is connected to a load circuit arranged to at least intermittently operate as a power source to the power circuit, at least one dc link capacitors arranged between said first connector and said second connector for processing a voltage signal received at said first connector or said second connector, and at least one voltage compensation circuits arranged between said first connector and said second connector, said one or more voltage compensation circuits arranged to generate a voltage signal to compensate an ac ripple component in a dc voltage signal appearing across the at least one dc link capacitor.

Abstract: A rectifying circuit including: between a first terminal of application of an AC voltage and a first rectified voltage delivery terminal, at least one first diode; and between a second terminal of application of the AC voltage and a second rectified voltage delivery terminal, at least one first anode-gate thyristor, the anode of the first thyristor being connected to the second rectified voltage delivery terminal; and at least one first stage for controlling the first thyristor, including: a first transistor coupling the thyristor gate to a terminal of delivery of a potential which is negative with respect to the potential of the second rectified voltage delivery terminal; and a second transistor connecting a control terminal of the first transistor to a terminal for delivering a potential which is positive with respect to the potential of the second rectified voltage delivery terminal, the anode of the first thyristor being connected to the common potential of voltages defined by said positive and negative p

Abstract: A driver includes a semiconductor chip, a bridge rectifier, and a current driver. The semiconductor chip includes a rectifying diode and a constant current source formed thereon. The bridge rectifier includes the rectifying diode. The current driver includes the first constant current source to provide a constant current.

Abstract: A switching power supply includes a switching element that turns ON and OFF a current flowing through a primary coil of a transformer to which a DC input voltage is applied, an output circuit that rectifies and smooths a voltage induced in a secondary coil of the transformer T to generate a prescribed output voltage, and a control circuit that uses feedback control to turn the switching element ON and OFF according to a feedback voltage obtained from the detected output voltage. The switching power supply also includes a supply voltage generation circuit that rectifies and smoothes a voltage induced in an auxiliary coil of the transformer to generate a plurality of supply voltages, an output voltage switching circuit that switches the output voltage according to a magnitude of a load to which the output voltage is supplied, and a supply voltage switching circuit that selects one of the supply voltages according to changes to the output voltage and supplies that supply voltage to the control circuit.

Abstract: A current sense circuit for sensing a target current flowing through a sensing resistor, has a first operational amplifier, a first transistor and a common mode adjust circuit. The first operational amplifier has a first input terminal coupled to a positive terminal of the sensing resistor, a second input terminal coupled to a negative terminal of the sensing resistor, and an output terminal. The first transistor has a first terminal coupled to the first input terminal of the first operational amplifier, a second terminal configured to provide a first output voltage in responsive to the target current, and a control terminal coupled to the output terminal of the first operational amplifier. The common mode adjust circuit adaptively adjusts a common mode voltage of the first operational amplifier.

Abstract: The disclosure relates to a method of generating an output voltage from a high input voltage and a command signal, the method comprising: providing an inductor having a first terminal and a second terminal linked to a low voltage by a capacitor, the second inductor terminal supplying the output voltage to a load, the low voltage being lower than the high input voltage; and connecting the first inductor terminal either to the high input voltage or to the inductor second terminal, as a function of the command signal.

Abstract: A grid-tie inverter (the “inverter”) may include a power converter that receives a direct current (DC) output voltage from a DC input power source, and generates an alternating current (AC) output voltage for transmission to a utility power grid. The inverter may also include a system controller that regulates the AC output voltage to efficiently transfer power to the utility power grid while a system AC load may be terminated across the output of the inverter. The inverter may also provide active power factor correction between the utility grid voltage and current. Furthermore, the inverter may also offer harmonic cancellation, which minimizes or eliminates the harmonic content out of the utility power grid voltage and current.

Abstract: Disclosed herein is a power conversion device including a storage and a power conversion controller. The storage stores multiple values, each correlated to a disturbance that causes distortion in a current to a power converter, in association with a phase angle of a voltage of an AC power supply. The power conversion controller controls ON/OFF operations by using the values stored in the storage to compensate for a manipulated variable of control performed by the power converter in association with the phase angle of the voltage of the AC power supply.

Abstract: A disclosed apparatus includes a converter for receiving a supply and regulating a load. The converter uses a gate driver that is controlled by a controller via a control loop. The control loop controls the converter in response to a feedback signal. The controller is located on a first integrated circuit and the gate driver is located on as second integrated circuit. A process geometry of the first integrated circuit is finer than a process geometry of the second integrated circuit.

Abstract: A method and apparatus for preventing dark current in a battery management system (BMS) are provided. A battery control apparatus may include a voltage regulator configured to regulate a voltage of a driving power supplied from a power supply to a processor, a first switch, located between the power supply and the voltage regulator, configured to switch on and off a connection between the power supply and the voltage regulator, and a second switch configured to control the first switch based on an input of a driving signal to operate the processor.

Abstract: A reference signal generator used with a switching mode power supply which converts an input voltage to an output voltage. The reference signal generator provides a reference signal consisting of a constant voltage signal and a variable voltage signal which is varying according to a duty cycle of the switching mode power supply during a startup period of the switching mode power supply and is varying according to a ratio of the input voltage at an end of the startup period to the input voltage of real time after the startup period.

Abstract: A multilevel rectifier includes an input lead, a switching module, and a multilevel direct current (DC) link. The switching module includes a plurality of switch devices connected to the input lead. The multilevel DC link includes a positive lead, a midpoint lead, and a negative lead. each connected to the switching module. The plurality of switching module switch devices are operatively connected between the input lead and the DC link to provide a greater number of output voltage levels than the number of leads in the DC link with unidirectional power flow capability.

Abstract: The present disclosure relates to a circuit structure for enhancing EFT immunity of primary side converter, including a power ground and a feedback voltage detecting block, a feedback current detecting block, a controller, a PWM driving block, a high voltage starting block, a starting unit, a circuit for enhancing EFT immunity of primary side converter, a power MOS transistor, and an OR gate configured to perform a logical OR of an off-time calculated theoretically and an off-time output by an off-time control block. The present disclosure enhances EFT immunity effectively and improves the dynamic characteristics of the primary side converter.

Abstract: A resonant inverter includes an input terminal, a first switch, a second switch, a transformer, a first resonant circuit, and a second resonant circuit. To the input terminal, an input voltage is applied. The first switch and the second switch are alternately turned on and off. The transformer includes a first winding and a second winding on a primary side. The first resonant circuit includes a first capacitive element and a first coil. The second resonant circuit includes a second capacitive element and a second coil. The first switch, the first winding, and the first resonant circuit constitute a first inverter circuit. The second switch, the second winding, and the second resonant circuit constitute a second inverter circuit. The input terminal is connected between the first winding and the second winding.

Abstract: A converter system and inverter system are disclosed with individual real and reactive power control for each phase of a poly-phase system. The converter system includes a controller, bidirectional single-phase inverters with AC sides coupled to an AC line filter and DC sides connected in parallel to a link capacitor coupled to DC/DC converters. Each inverter handles a separate AC phase. The controller controls the inverters and DC/DC converters so the current amplitude of each AC phase is independent, and the phase difference of each AC phase is independent. The inverters can be galvanically isolated between the DC and AC sides. The inverters can be non-isolated inverters having line and neutral connectors coupled to an isolated transformer winding, and the output windings of the transformer can be wired in a Wye configuration. The inverters can have local controllers.

Abstract: Methods and apparatus for providing a time-interleaved current-feedback droop function for multiphase buck converters. An example method includes outputting a first control signal to enable a first set of switches corresponding to a first voltage of a first phase from a multiphase converter, the first phase included in a plurality of phases; enabling a first current associated with the first phase to be measured by a sample and hold circuit associated with the first phase; sampling the first current; holding the first current, the first current based on a load current for the first phase of the multiphase converter; and outputting a droop voltage based on a plurality of currents corresponding to the plurality of phases of the multiphase converter, the plurality of currents including the load current for the first phase.

Abstract: Embodiments herein provide a modular multilevel converter configured to increase one of number of an output voltage level and an output current level. The modular multilevel converter includes a plurality of legs where each leg includes a plurality of arms. Each arm of the modular multilevel voltage source converter includes a main wave shaping (WS) circuit, an auxiliary WS circuit and an arm inductor. The main WS circuit includes one or more half bridge sub-module(s) that includes a capacitor. The auxiliary WS circuit includes one or more full bridge sub-module(s) that includes a capacitor. Each arm of the modular multilevel current source converter comprises a plurality of half-bridge modules connected in parallel, and a plurality of arm capacitor connected across the plurality of half-bridge modules and one or more auxiliary full bridge module(s).

Abstract: A switched-mode power supply device includes a power switch configured to transfer power from a supply line to a load in switched-mode; a first oscillator configured to operate at a frequency proportional to a voltage of the supply line; a second oscillator configured to operate at a frequency proportional to a voltage of the load; and a regulator configured to operate the power switch according to a duty cycle based on a ratio between the first and second oscillator frequencies.