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High efficiency variable voltage supply
There is disclosed a power supply stage, comprising: generating means for generating a power supply voltage from a high efficiency variable voltage supply in...
Control circuit for a synchronous rectification circuit, LLC resonant
converter and associated method
A control circuit for a synchronous rectification circuit, a LLC resonant converter and a control method. The control circuit has a first comparing circuit, a...
Magnetic device and power converter employing the same
A magnetic device and power converter employing the same. In one embodiment, the magnetic device includes a first L-core segment including a first leg and a...
Method of feedback commanding a monophase resonant converter, a related
monophase resonant converter and a...
A resonant converter includes a primary switching circuit having a primary winding and a primary switching stage configured to drive the primary winding; a...
Power conversion circuit arrangements utilizing resonant alternating
An apparatus and system for power conversion. In one embodiment, the apparatus comprises a transformer having a primary winding and a plurality of secondary...
Power supply circuit for a PFC converter
A PFC converter (100) is disclosed that includes a voltage rectifier circuit (126, 127, 153) and a voltage regulator circuit (81, 90, 33, 54). The PFC converter...
Current meter for load modulation communication receiver architecture
A load device on a secondary side of an isolated switching power converter communicates a digital message to a primary side controller by modulating the load...
Systems and methods for peak current adjustments in power conversion
System and method for regulating an output of a power conversion system. An example system controller includes a signal generator and a modulation and drive...
Systems and methods for dynamic threshold adjustment with primary-side
sensing and regulation for flyback power...
System and method for adjusting a threshold of a power conversion system. The system includes a threshold generator configured to receive a first signal and...
Power converter and method for controlling power converter
A control circuit and a method for controlling a power converter are provided. The method for controlling the power converter includes the following steps. A...
Digital slope compensation for peak current controlled converters
A mixed signal integrated circuit, such as a typical microcontroller or digital signal controller (DSC), provides digital slope compensation for implementing...
Zero voltage soft switching scheme for power converters
A control scheme and architecture for a power conversion circuit employs two bidirectional switches and a zero voltage switching (ZVS) scheme for the high-side...
Dividing a single phase pulse-width modulation signal into a plurality of
Dividing a single phase PWM signal into a plurality of phases includes: receiving, from a phase controller by a PWM frequency divider, an input pulse train...
Power device for delivering power to electronic devices and methods of
An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is...
Resonant DC-DC converter control device
A control device is configured to, when the direct current output voltage of a resonant DC-DC converter is of a value that exceeds the maximum value that can be...
Control circuit with deep burst mode for power converter
A control circuit with deep burst mode for power converter according to the present invention comprises a load detection circuit and a PWM circuit. The load...
High-efficiency energy harvesting interface and corresponding energy
An electrical-energy harvesting system envisages a transducer for converting energy from an environmental energy source into a transduced signal, an electrical...
Computer server rack systems with improved power distribution
A computer server rack for mechanically supporting and electrically powering computer servers is provided. The rack includes DC-to-DC conversion circuits which...
Power supply circuit and notebook computer including the same
The disclosure provides a power supply circuit including a pulse width modulator (PWM), a first voltage conversion unit, a second voltage conversion unit, a...
Output current monitor circuit for switching regulator
A circuit and method for providing switching regulation with an improved current monitor comprising a pulse width modulation (PWM) controller configured to...
SIMO (single inductor multiple output) bidirectional dual-boost
A switching power converter circuit comprises an input port, a first circuit supply rail having a first positive voltage greater than circuit ground, a second...
Buck variable negative current
An active diode formed within a buck power regulator with an NMOS transistor is connected to a PMOS transistor at a node that is further connected to the...
Voltage adjustment system with variable resistance connected to the
A voltage adjustment system includes an adjust module, a control module, and a load module. The adjust module includes a voltage converting unit which includes...
Communication system with variable output supply current
A system including a bus and a plurality of devices coupled thereto and configured to communicate with each other via the bus. The system further includes a...
Control module of constant on-time mode and voltage converting device
A control module of constant on-time mode for a voltage converting device, includes a comparing unit, for generating a comparing signal according to an enhanced...
Discrete narrow-band switching frequency avoidance of a switch mode power
The switching frequency of a switch mode PFM power converter is compared with a predetermined frequency range that contains the operating frequency of a nearby...
Clocking circuit, charge pumps, and related methods of operation
A charge pump includes a voltage multiplier core and a clocking circuit. The voltage multiplier core includes first and second cross-coupled CMOS devices, first...
Low noise radio frequency switching circuitry
Radio frequency (RF) switching circuitry includes support circuitry for maintaining one or more RF switching elements in either an ON or OFF state. The support...
Electrical supply apparatus with current waveform signal and method for
operating the electrical supply apparatus
An electrical supply apparatus is provided. The apparatus has an input for connecting the electrical supply apparatus to a power supply system, an output for...
Systems and methods for use in recovering a converter after grid fault
Systems, power modules (108), and methods (200) for using in controlling a converter (110) coupled between a power generator (104) and an electric grid (102)...
Charge module, driving circuit, and operating method
A charge module is configured to pre-charge a control node to a pre-charged voltage, such that in a case a control module outputs a control voltage, a drive...
Semiconductor device that can cancel noise in bias line to which bias
Disclosed herein is a device that includes a bias line to which a bias current flows, a switch circuit controlling an amount of the bias current based on a...
Tubular linear motor
The tubular linear motor includes an armature having a coil and a magnetic exciter having a permanent magnet provided to face the coil. The armature has a yoke...
Absolute encoder device and motor
The present invention provides an absolute encoder device, including: a permanent magnet including a first magnetic pattern (bipolar) and a second magnetic...
System for driving electromagnetic appliance and motor driven vehicle
In one embodiment, system for driving an electromagnetic appliance includes an electromagnetic appliance, a main-drive unit and a sub-drive unit. The...
A work apparatus has a tool which is driven in rotation by a drive motor via a transmission. The drive motor is an electric motor which has a commutator and...
Rotating electrical machine
A rotating electrical machine includes an annular stator, a plurality of coils, a case, a side cover, a refrigerant passage, supply ports, and a strainer. The...
Electric motor cooling medium discharge structure and electric motor
It is an object to decrease an amount of a cooling medium which stays in a housing of an electric motor and is not discharged to the outside when cooling the...
Vehicle drive device
A vehicle drive device that has a stator and a rotor disposed on the inside of the vehicle wheel and drives the wheel, wherein the whole stator can be...
Actuator for a flap for opening and closing an air passage
The invention relates to an actuator for a flap for opening and closing an air passage in an air conditioner, ventilator, and/or heater, comprising a housing...
Motor with integrated coupler
Couplings between driven shafts of an actuator and a motor of an actuator are provided. The coupling may be directly integrated into a rotor of the motor. The...
Systems and methods for electric motor construction
Systems and methods for constructing a stator for use in downhole equipment such as ESP systems, where granulated filler material is used instead of...
A stator includes: a plurality of stator pieces around which coils are wound; a stator holder which supports the plurality of stator pieces by arranging the...
Stator of rotating electrical machine and rotating electrical machine
A stator of a rotating electrical machine includes a stator core, plural stator coil groups constituting plural phases, plural pieces of interphase insulation...
Coil for a rotating electrical machine
A gas treatment machine includes a main gas treatment circuit, connected to a gas compression chamber, a gas compressor, mounted in the compression chamber, a...
Bar wound stator winding layout with long-pitched and short-pitched coils
A stator assembly includes a plurality of stator slots defining a plurality of slot layers. The assembly includes a plurality of hairpins each having respective...
Winding construction for high efficiency machine
A permanent magnet motor, generator or the like that is constructed with a concentrated winding and edge form wound stator coils. This achieves less eddy...
Low inertia direct drive drawworks
A low inertia permanent magnet motor includes a stator and rotor. The rotor includes a generally tubular and hollow rotor body coupled to the shaft of the motor...
A magnet assembly is disclosed. The magnet assembly includes a base element and a magnet attached to a first surface of the base element. A second surface of...
Rotor, motor and method for manufacturing rotor
A motor includes a shaft, a rotor, and a stator. The rotor includes first and second rotor cores, and a field magnet. Second claw magnetic pole portions of...