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8988912 System and method for emulating an ideal diode in a power control device  
A system and method for emulating an ideal diode for use in a power control device is provided. In one embodiment, the invention relates to a circuit for emulating an ideal diode, the circuit...
8988905 PWM controller detecting temperature and AC line via a single pin and power converter using same  
A PWM controller detecting temperature and AC line via a single pin and a power converter using the PWM controller, the PWM controller comprising: an output pin for providing a PWM signal; and a...
8988901 Switching power supply device  
A switching power supply includes a series resonant circuit that includes a resonant inductor and a resonant capacitor connected in series with a primary winding of a converter transformer. By...
8988910 Alternating-current conversion system having low power consumption bleeder circuit  
A low power consumption bleeder circuit is disclosed, and it is coupled to an alternating-current (AC) power source, an input filtering capacitor, and a rectifying filter. The low power...
8988029 Motor driving control device  
A motor driving device comprises: an AC/DC converter that converts alternating current power into direct current power; a motor driving unit that operates based on the direct current power...
8988914 Variable input control for improving switched power supplies  
A power converter and a method of operation thereof is disclosed including an input, an output, a sensor unit, a switched power converter, and a processor module. The power converter may convert...
8988913 Selective control for improving switched power supplies  
A power converter and a method of operation thereof is disclosed including an input, an output, a sensor unit, a switched power converter, and a processor module. The power converter may convert...
8988911 Self-bias emitter circuit  
Self-bias emitter circuit configurations can use the amplitude of an input AC carrier signal to provide a DC bias voltage across an emitter for suitable operation. A self-bias emitter circuit can...
8988899 Switching regulator device  
A switching regulator device including a power conversion transformer for converting an input voltage from a power source at a primary side to a predetermined output voltage and outputting the...
8988903 Systems and methods for protecting a switch mode power supply  
The present disclosure provides systems and methods for protecting a switch mode power supply (SMPS). An SMPS may include an input power connector, an input rectifier and filter, a transformer, an...
8988909 Power conversion device  
A power conversion device includes a main circuit unit (direct-current main circuit) that converts direct-current power into alternating-current power, and a control unit that controls the...
8988861 Power converter  
The power converter includes a power conversion section which configures a circuit for power conversion, a power bus bar extending from the power conversion section, a terminal block, and a...
8988907 Compensating element connected to a power line through an autotransformer  
An apparatus for compensating a power system transmission line (46). The apparatus comprises an autotransformer (40) disposed in series with the transmission line (46). An autotransformer series...
8987999 LED driver  
The present application discloses a LED driver including: a first and a second auxiliary windings connected in series with each other; a first rectifying device coupled with a terminal of the...
8988902 Power converter controller IC having pins with multiple functions  
A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC...
8988034 Drive system and method for operating such a drive system  
A drive system for an electric motor includes a connection for a battery, and an inverter having an input side connected to an intermediate circuit and an output side having a connection for an...
8982594 Circuit for controlling a switch in series with a capacitive element  
A circuit for controlling a switch in series with a capacitive element. A circuit may include a bidirectional switch and a diode in parallel with first and second conduction terminals of the...
8981743 Constant-on-time multi-phase switching voltage regulator and related method of generating a regulated voltage  
A switching voltage regulator including a comparison module configured to receive a reference voltage and a feedback voltage and to generate a comparison signal corresponding to a difference...
8982592 Maximum power point tracking for power conversion system and method thereof  
An exemplary power conversion system comprises an MPPT unit, a DC bus, a power converter, and a converter controller. The MPPT unit receives a feedback current signal and a feedback voltage signal...
8982593 Cascaded H-Bridge (CHB) inverter level shift PWM with rotation  
Cascade H-Bridge inverters and carrier-based level shift pulse width modulation techniques are presented for generating inverter stage switching control signals, in which carrier waveform levels...
8983329 Piezoelectric transformer type high-voltage power supply device and image forming apparatus  
A high-voltage power supply device includes: a piezoelectric transformer; a driving unit of the piezoelectric transformer; a detection unit configured to detect an output of the piezoelectric...
8981589 Switched battery and capacitor arrangement and related operating methods  
Systems and methods are provided for regulating the state of charge of a battery. An exemplary electrical system includes a fuel cell coupled to a bus and a battery coupled to the bus via a...
8981691 Motor drive apparatus  
When a failure detection part detects a failure in an inverter circuit in a first power supply system, a drive control part stops the inverter circuit from driving a motor. An on/off control part...
8982595 T-connected autotransformer-based 40-pulse AC-DC converter for power quality improvement  
Design of a T-connected autotransformer based 20-pulse ac-dc converter is presented in this invention. The 20-pulse topology is obtained via two paralleled ten-pulse ac-dc converters each of them...
8982587 Compensating ripple on pulse with modulator outputs  
A ripple compensation apparatus comprises a ripple detection unit to detect a ripple on a dual DC bus, a waveform generation unit to generate a modulated waveform based on a base waveform and the...
8981836 Charge pumps with improved latchup characteristics  
Some embodiments relate to charge pump regulators to selectively activate a charge pump based not only on the voltage output of the charge pump, but also on a series of wake-up pulses that are...
8982591 System and method for exchangeable capacitor modules for high power inverters and converters  
A method of and system for monitoring condition of a large capacitor connected across an output of a rectifier circuit in an operating electrical power transmission circuit in order to anticipate...
8982588 Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices  
A method and apparatus for controlling the output voltage of a boost converter including a number n of bridge devices connected in series, each bridge device including plural switches and a...
8982590 Solar generation method and system  
The invention describes a solar generation method by means of a system (1) comprising a set of solar cells (2) connected to an inverter (4) that transmits the energy generated to an electrical...
8982585 Systems and methods for primary-side regulation in off-line switching-mode flyback power conversion system  
Switching-mode power conversion system and method thereof. The system includes a primary winding configured to receive an input voltage, and a secondary winding coupled to the primary winding and...
8982589 Boosting circuit and RFID tag including boosting circuit  
One object is to provide a boosting circuit whose boosting efficiency is enhanced. Another object is to provide an RFID tag including a boosting circuit whose boosting efficiency is enhanced. A...
8982584 Power supply regulation for ultra-low load and no-load operation  
A controller of a switching power converter employs a dynamically adaptive power supply regulation approach that improves low-load and no-load regulation to achieve ultra-low standby power in a...
8982586 Method for regulating temperature of transistor-based component  
A method of regulating temperature of a transistor-based component of a power system is disclosed. The method may include operating the power system to supply electric power to the...
8976549 Startup circuit including first and second Schmitt triggers and power converter employing the same  
A startup circuit with reduced power dissipation, method of operating the same and a power converter employing the startup circuit. In one embodiment, the startup circuit for a controller includes...
8975883 Soft start scheme under low voltage power  
A soft start circuit includes an error amplifier for generating a control signal according to an input voltage, a feedback voltage and a reference voltage, a feedback circuit for generating the...
8976550 Power supply having a surge protection circuit  
A power supply having a power protection circuit has a rectification circuit and a converter. An input terminal of the rectification circuit is connected with the AC mains. A first voltage...
8975884 Two-phase transformer-coupled boost converter  
Various embodiments provide two-phase boost converters. One two-phase boost converter includes a node configured to be coupled to an input voltage and a transformer coupled to the node. The...
8976559 Control methods and power controllers with load compensation adapted for a power supply  
Disclosure includes control methods and power controllers with load compensation adapted for a power supply powering a load. A disclosed power controller comprises a converter and a control...
8976553 Power conversion device  
A power conversion device according to an aspect of an embodiment includes a power conversion unit and a control unit. The power conversion unit includes N (N is an integer number not less than...
8976545 Current resonance power supply for detecting overcurrent based on an output from a current compensation unit  
A current resonance power supply includes a current detecting unit detecting a current flowing through a primary side of a transformer and a current compensating unit compensating the current...
8975888 Miniature high-voltage power supplies  
The present invention provides miniature power supplies and circuitry for powering high-voltage devices.
8976551 Power converter  
A power converter includes an inverter unit that includes a plurality of semiconductor switching elements constituting upper and lower arms and converts DC power into AC power; a gate driving unit...
8976558 Power supply device with smoothing capacitor and falling voltage chopper circuit  
According to one embodiment, a power supply device includes a rectifying circuit configured to rectify an alternating-current power supply, a first capacitor configured to smooth a voltage after...
8976556 Space vector modulation for multilevel inverters  
Inverter is modulated based on first, second, and third switching states determined according to a reference vector represented as a sum of a remainder vector connecting the reference vector with...
8975941 Data and power system based on CMOS bridge  
A signal processing circuit includes an input inverter and an output inverter. Each inverter has a signal input for receiving an input rectangular signal, a signal output for providing an inverted...
8976554 Control for fault-bypass of cascaded multi-level inverter  
A cascaded multi-level inverter is controlled in fault bypass operation. Rather than relying on approximations or feedback forms, the reference voltages are generated as an analytic solution. The...
8976543 Full bridge power supply with digital feedback  
A circuit includes a full-bridge converter circuit coupled to a transformer for converting a first voltage level to a second voltage level. A sensing circuit is coupled to the transformer for...
8976542 High frequency cathode heater supply for a microwave source  
A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor...
8976544 Resonant circuit inverter with controllable operating point  
A resonant circuit inverter with a rectifier, a DC link circuit and an inverter including controllable switches. The resonant circuit inverter has a first control means, with which the operating...
8976555 Converter  
A converter has converting groups with a first stage connected to input lines thereof and a second stage connected to output lines. The first and second stages have positive and negative branches...