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9042121 Power converter with preemptive protection  
Among many embodiments, a power conversion apparatus and a method for converting power are disclosed. The power conversion apparatus may include switching components configured to create an...
9036371 Adaptive inductive power supply  
A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected...
9036372 Method for controlling a resonant-mode power supply and a resonant-mode power supply with a controller  
A method for controlling a resonant-mode power supply, the resonant-mode power supply comprising an assembly of switches (K1, K2, K3, K4), between which a resonant circuit with an output load is...
9024477 High voltage power source device and image forming device  
A high voltage power source device includes piezoelectric transformers, each of the piezoelectric transformers being formed with a primary electrode and a secondary electrode on piezoelectric...
9013895 Adaptive inductive power supply  
A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected...
9013896 Apparatus, systems and methods for power supply employing single-stage forward voltage conversion  
A method of supplying direct-current (DC) power is presented herein. In the method, a first electrical signal and a second electrical signal are received. The first electrical signal alternates...
9007052 Voltage sensing in isolated converters  
A system for sensing voltage in an isolated converter includes an input circuit isolated from an output circuit using a first transformer, the first transformer having a primary coil and a...
9007785 Power supply, image forming device, and piezoelectric transducer control method  
A power supply with a digital control circuit generates an output voltage by driving a piezoelectric transducer with an alternating current voltage at a digitally controlled driving frequency. To...
9000601 Power semiconductor module  
The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other...
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...
8971074 Bias supply, a power supply and a method of using bias supply voltage levels to signal information across an isolation barrier  
A bias supply, a method of communicating data across an isolation barrier and a power supply are provided herein. In one embodiment, the bias supply includes: (1) a bias supply transformer having...
8964412 Split current mirror line sensing  
Apparatus and methods for filtering the transients of an input signal of an integrated circuit while maintaining a constant voltage at an input terminal of the integrated circuit are disclosed. In...
8964411 Method for DC-DC conversion using a DC electric power source  
The converter comprises an inverter powered by a DC current source. The inverter powers a conversion unit operating on the basis of controlled magnetic switching obtained by means of power diodes...
8947340 Backlight unit and display apparatus having the same  
A backlight unit includes a plurality of light sources, a boost circuit, a plurality of balance circuits, and a plurality of first resistors. The boost circuit boosts an input alternating current...
8947898 Power convertion circuit using high-speed characterisics of switching devices  
A power conversion circuit converting DC electric power into AC electric power and sending the AC power to an inductive load, includes a first switching device connected to the DC power supply; a...
8937817 Lossless commutation during operation of a power converter  
A method for operating a DC-DC converter. The method comprises: matching, based on a turns ratio of a transformer of the DC-DC converter, a primary side capacitance of the DC-DC converter and a...
8929098 DC-DC converter  
A controller controls a voltage-source power converter and a current-source power converter based on a detection value of a rail voltage input to the voltage-source power converter and a detection...
8928181 Method and apparatus for transmission of energy and data  
In a method and in an apparatus for transmission of energy and data, with a primary side, on which an amplifier is arranged, with a secondary side, on which a data source, e.g. a measuring sensor,...
8923019 DC/DC converter, power converter and control method thereof  
A DC/DC converter, a power converter and a control method thereof are disclosed, wherein the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection...
8913410 Converter device for an uninterruptible power supply  
A converter device for an uninterruptible power supply, the device having first and second main switching units connected to first and second voltage lines of a first type and each equipped with a...
8910372 Method of fabricating a choke assembly  
An improved choke assembly for a power electronics device is provided. More specifically, a choke assembly with improved protection from environmental conditions such as dirt and water is...
8907509 Current controller device and vector control method for controlling power conversion  
A current controller device using a vector control algorithm for controlling conversion of DC power into AC power is provided. The controller device has an open loop control loop gain and produces...
8891252 Offline power supply and apparatus for charging a plug-in vehicle  
An offline power supply includes a power supply circuit including a primary-side circuit for connecting to a first power source, a secondary-side circuit for connecting to a load, and a...
8891262 Series switch bridgeless power supply  
A series-switch bridgeless power supply provides common-mode EMI filtering. The power supply includes a center-tapped inductive device bifurcated into first and second windings. The AC input,...
8878456 Filter device  
A filter device (10) for filtering high-frequency interferences, such as due to switching flanks of a DC converter, has a current path (4) between an input (2) and an output (3), and an inductor...
8866332 Circuit arrangement for power distribution in a motor vehicle  
A circuit arrangement (1) for power distribution in a motor vehicle is described, which comprises a transformer (T1, T1a . . . T1n) having at least three transformer windings (W1, W1a . . . W1n,...
8861229 Isolator circuit including a voltage regulator  
An apparatus includes a regulator circuit that generates a voltage in response to an input current being supplied to an input terminal and functional circuitry, powered by the voltage generated by...
8855558 Adaptive inductive power supply with communication  
An adaptive inductive ballast is provided with the capability to communicate with a remote device powered by the ballast. To improve the operation of the ballast, the ballast changes its operating...
8854837 Boost converter for reducing voltage stress  
There is provided a boost converter capable of reducing voltage stress within each element thereof, without using a separate loss snubber circuit, by clamping a voltage applied to an output diode...
8854838 Power supply control device, power supply system and eletronic device  
An electronic device includes a power supply system and a load circuit connected to the power supply system. The load circuit mutually switches between the first mode and the second mode. In the...
8842446 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
DC-DC converter
 
A controller controls a voltage-source power converter and a current-source power converter based on a detection value of a rail voltage input to the voltage-source power converter and a detection...
8837170 Passive resonant bidirectional converter with galvanic barrier  
A passive resonant bidirectional converter system that transports energy across a galvanic barrier includes a converter using at least first and second converter sections, each section including a...
8830702 Semi resonant switching regulator, power factor control and LED lighting  
Described are improvements in power factor control and systems embodying said improved power factor control. Improvements lie in a method of zero voltage switching in which a capacitor is placed...
8830701 DC-DC converter  
A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller....
8830700 DC-DC converter and method for controlling DC-DC converter  
A DC-DC converter is configured with a voltage-source power converter provided at a primary side of a transformer, a current-source power converter provided at a secondary side of the transformer,...
8830699 Control circuit of switching power supply system and switching power supply system  
An input voltage detection unit detects whether an AC input voltage is the voltage of a 100V system or of a 200V system. In response, a frequency decreasing gain setting unit switches between...
8824176 Resonant converting circuit and resonant controller  
The resonant converting circuit comprises a resonant circuit, a current detecting circuit and the resonant controller. The resonant controller controls a power conversion of the resonant circuit...
8817490 DC-DC converter  
A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller....
8817492 DC-DC converter having partial DC input conversion  
A DC/DC converter includes two input terminals for a DC input voltage, two output terminals for a DC output voltage, an inverter converting a DC voltage into an AC voltage, and a rectifier...
8811037 Adaptive driver delay compensation  
Peak current in a switching converter is controlled using a closed loop to compensate for error caused by delay time in the switching transistor and control logic. A reference value is established...
8811038 Apparatus and method for soft switching in a medium voltage to low voltage converter  
A switching and control arrangement are provided along with a transformer arrangement such that semiconductor-based switches can be used in a medium DC voltage to AC inverter in a medium voltage...
8811040 Circuit for a resonant converter  
A circuit (1202) for a resonant converter (1204; 1326), the resonant converter configured to operate in a burst mode of operation, the circuit configured to: receive a signal (1206; 1308)...
8797005 Boost converter  
A boost converter is disclosed in the present disclosure. The boost converter includes a switching element, a first diode, a second diode, a first inductor, a second inductor, a DC voltage input...
8792253 System and methods for high power DC/DC converter  
A voltage conversion system and methods are disclosed. Phase-shift modulation signals are generated and interleaved to provide interleaved phase-shift modulation signals. A plurality of voltage...
8787039 Hybrid adaptive power factor correction schemes for switching power converters  
A method of a controller of a switching power converter that provides a configurable power factor control method for the switching power converter. The controller combines power regulation control...
8772975 Apparatus and method for implementing a differential drive amplifier and a coil arrangement  
Exemplary embodiments are directed to differentially driving a load. An apparatus includes a differential drive amplifier including a switching device coupled with a first output node and a second...
8773869 System and method for conversion of high voltage AC to low voltage DC using input voltage gating  
A method and apparatus for conversion of high voltage AC to low voltage high current DC without using high voltage capacitors or transformers. A single switch is used to perform both the functions...
8767412 Voltage supply  
Control devices can be destroyed or damaged by their supply voltage in the event of malfunction. The voltage supply according to the present invention comprises a means (12) having a primary part...
8767413 Integrated switching power supply device and electric apparatus  
An integrated switching power supply device includes a series-connected body, a driving control element, and external terminals. In the series-connected body, a switching element, a constant...
8767415 High efficiency and fast response AC-DC voltage converters  
The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage...