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Quasi variable frequency motor controller
An apparatus for a quasi variable frequency motor controller is includes a DFC module that applies a first frequency to a motor as part of a discrete frequency...
Device and method for harvesting energy
A miniature energy harvesting device for producing electricity from acoustical energy, stray electromagnetic energy, noise and from energy of different...
Piezoelectric power generating device having a stress applying member
A piezoelectric power generating device that includes a piezoelectric element having a first surface and a second surface opposite the first surface, a stopper,...
Driving circuit for vibration-type actuator
A driving circuit to drive a vibration member comprising an electro-mechanical energy conversion element includes a transformer connected in parallel to the...
Cascaded electrostatic actuator
A cascaded electrostatic actuator can be formed from a substantially planar substrate. The cascaded electrostatic actuator can be formed in a plane of the...
Driving apparatus and method for modular multi-level converter
The present invention relates to a driving method for a modular multi-level converter. The driving method include inputting a current reference value...
Configurable hybrid converter circuit
A circuit for a hybrid voltage source converter suitable for high voltage DC power transmission and reactive power compensation. The circuit comprises an...
Control device for semiconductor switch on an inverter and method for the
actuation of an inverter
The invention relates to a control device (4) for the actuation of a semiconductor switch (1) on an inverter having an actuation switch (16) that is designed to...
Reactor, converter and power conversion device
A reactor in which an assembly is easily assembled into a case and which is excellent in productivity is provided. In this reactor, two positions out of a total...
Power supply circuit for gate driving circuit of a power converter
A power supply circuit for a gate driving circuit for driving semiconductor switching devices of a power converter that is configured to perform a DC to AC...
AC tied inverter, system and method
An AC tied inverter connectable to an AC source, the AC tied inverter including a DC to DC current fed push-pull converter operable to generate a current...
Control device of power converter circuit
It provides the effective power conversion control technique which it can control which it made use of a characteristic (nature) of each A/D converter in. It...
Apparatus for controlling conversion between alternating current and
Embodiments provide an apparatus for controlling conversion between an alternating current and a direct current, including a rectifier circuit, a detection...
Synchronous rectifier controlling module and method for controlling a
A synchronous rectifier controlling module includes a signal-processing unit and a plurality of driving units, the signal-processing unit is coupled with a...
Power converter apparatus applied to wind power generation system
There is provided a power converter apparatus including a detector detecting a system voltage, and a controller stably outputting power generated by the wind...
Startup method and system for resonant converters
A method comprises providing a resonant converter comprising a switching network comprising a plurality of switches, a resonant tank coupled between the...
Synchronous rectifier control for a double-ended isolated power converter
An apparatus comprises a power converter circuit and a control circuit. The power converter circuit includes a primary circuit side and a secondary circuit...
Conduction detecting circuit, rectifying switch controlling circuit
including the conduction detecting circuit...
A circuit configured to detect the conduction of a first body diode and a second body diode of the first and second synchronous rectification transistors is...
Power supply apparatus and driving method thereof
A power supply apparatus and a driving method thereof are disclosed. The power supply apparatus includes a first converter and a second converter. The first...
Common slot battery backup unit for network devices
An internal common slot battery backup unit (CSBBU) is provided that can be placed in a network device's power supply unit (PSU) slot. The CSBBU has the same...
DC-DC conversion device including pulse width modulation control
A circuit of a full-bridge configuration using four semiconductor switch elements is used as a circuit on the primary side of a transformer in a DC-DC...
Low forward voltage rectifier
A Low Forward Voltage Rectifier (LFVR) includes a bipolar transistor, a parallel diode, and a base current injection circuit disposed in an easy-to-employ...
Power supply fault protection circuit with primary side shutdown and
Fault protection circuitry and methodologies for isolated power supply topologies are provided. The circuitry is configured to shut down the primary side of the...
Systems and methods for protecting power conversion systems based on at
least feedback signals
System and method for protecting a power conversion system. An example system controller includes a protection component and a driving component. The protection...
Power conversion apparatus and over power protection method thereof
A power conversion apparatus and an over power protection method thereof are provided. A number of times a sensing voltage exceeding a reference voltage is...
High voltage DC/DC converter with cascaded resonant tanks
A converter, for use in high voltage direct and alternating current power transmission comprises a primary charge transfer converter. The charge transfer...
Flyback power supply regulation apparatus and methods
Apparatus and methods disclosed herein are associated with a primary side voltage and/or current regulator (PSR) in a flyback power converter. Apparatus and...
Power supply device with parallel buck converters
The power supply device of the present invention includes a main converter and at least one sub converter connected in parallel between a pair of output ends of...
Switch control circuit, single-inductor-dual-output (SIDO) control method
A switch control circuit includes a processor computing an on-time ratio based on an input voltage value, a first output voltage value, and a second output...
Control of multi-level supply stage
A buck-boost converter comprising: a voltage source; an inductor, wherein a first terminal of the inductor is switchably connected to the voltage source; and a...
Power management multi-chip module with separate high-side driver
integrated circuit die
A packaged device includes a first die, a second die, and specially spaced and positioned sets of package terminals. The first die includes a pulse-width...
Switching regulator with increased light load efficiency in pulse
frequency modulation mode
A switching regulator includes a multiphase converter which includes a plurality of main phases configured to covert a power supply voltage to a lower voltage...
Power converter with separate buck and boost conversion circuits
An apparatus (100) includes a buck and boost conversion circuit (110), and a control unit (120, 200) for controlling operations of the buck and boost converter....
Power supply and DC-DC converter with voltage drop circuit therein
A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit...
Buck converter and control method therefor
The present disclosure provides a pair of NMOSFET switches connected in series, an output filter, a control circuit, a boot-strap capacitor and a disabling...
Power converter soft start circuit
PWM control circuits and soft start circuitry thereof are presented in which a source follower circuit provides an input to a pulse generator error amplifier...
Split-switcher voltage regulator architecture
A power management system that can include an application processor and a power management unit (PMU). The PMU can generate a regulated output voltage based on...
Power supply device for vehicle including a boosting converter circuit
A power supply device is provided for a vehicle having an idling-stop function, the power supply device including a boosting converter circuit with small loss...
Control circuit applicable to power converter and operation method thereof
A control circuit includes an auxiliary pin for receiving an auxiliary voltage of an auxiliary winding of a power converter; a first detection unit for...
Switching regulator with reduced body diode conduction
A switching regulator that includes a high-side MOSFET, a low-side MOSFET, a high-side driver circuit, a low-side driver circuit, and a capacitive coupling...
Switched capacitor voltage converting device and switched capacitor
voltage converting method
A voltage converting device includes first to third voltage converters, each including a capacitor, a pair of charge switches for charging the capacitor, a pair...
Voltage regulator and method for regulating dual output voltages by
selective connection between a voltage...
A voltage regulator including a first, second, and third capacitances, first switches, and second switches. A first terminal of the first capacitance is...
Voltage conversion circuit and switching control circuit
In an embodiment, a voltage conversion circuit includes a first voltage conversion unit stepping up or stepping down an input DC voltage and a second voltage...
Power supply with continuous spread-spectrum switching signal
A switched-mode power supply with reduced electromagnetic interference (EMI) is described. This switched-mode power supply includes a modulation circuit that...
Method for improving performance of filter and power conversion apparatus
A power conversion apparatus is disclosed in the present application. The power conversion apparatus comprises: a power converter comprising an energy-storage...
Power conversion device and power conversion method with adjustable
A transformer steps down an input AC power, and supplies the AC power to a converter. The primary voltage of the transformer detected by a voltage detector is...
System and method of controlling an inverter based on a calculated
capacitance of a DC link capacitor
A system, comprising a control regulation system, an inverter, a DC link capacitor, which is coupled to input connections of the inverter, at least one control...
Power conversion apparatus
A power conversion device includes a capacitor for smoothing DC current; power semiconductor modules having power semiconductor devices stored in a module case...
Power converter control method
When an AC voltage is outputted to an inductive load, pulsation of an effective power caused by an odd number-th order harmonic component of a current flowing...
Apparatus and method for reducing a noise in an output waveform using a
multi-bit sigma-delta modulator and a...
Disclosed is a power control driving device which includes a sine wave signal generating unit; a control signal converting unit configured to convert a sine...