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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10587143B2
Charging apparatus capable of reducing low-frequency leakage current
Publication/Patent Number: US10587143B2 Publication Date: 2020-03-10 Application Number: 16/168,214 Filing Date: 2018-10-23 Inventor: Woo, Dong Gyun   Jang, Hui Sung   Seong, Hyun Wook   Assignee: Hyundai Motor Company   Kia Motors Corporation   IPC: H02J7/02 Abstract: A charging apparatus capable of reducing low-frequency leakage current includes: a power factor correction converter including a switch, wherein the power factor correction converter converts an AC power inputted by an on/off control of the switch into a DC power by correcting a power factor of the AC power; a DC-DC converter changing a magnitude of voltage outputted from the power factor correction converter into a magnitude of voltage required by an energy storage device to be charged; a first duty controller determining a first duty value of the switch for outputting a voltage having a predetermined magnitude through the power factor correction converter based on a magnitude of a differential mode component of the AC power; and a second duty controller determining a second duty value of the switch for removing a common-mode component of the AC power based on the common-mode component. A charging apparatus capable of reducing low-frequency leakage current includes: a power factor correction converter including a switch, wherein the power factor correction converter converts an AC power inputted by an on/off control of the switch into a DC power by correcting a ...More ...Less
2 US10651736B1
Multi-level converter with continuous conduction mode (CCM) and discontinuous conduction mode (DCM)
Publication/Patent Number: US10651736B1 Publication Date: 2020-05-12 Application Number: 16/233,189 Filing Date: 2018-12-27 Inventor: Lazaro, Orlando   Aguilar, Alvaro   Morroni, Jeffrey   Scoones, Kevin   Sharifi, Reza   Assignee: TEXAS INSTRUMENTS INCORPORATED   IPC: H02M3/158 Abstract: A power converter device includes a set of switches configured to switch between at least three input-side voltage levels to provide output pulses. The power converter device also includes a control circuit for the set of switches, wherein the control circuit configured to selectively switch the power converter device between a continuous conduction mode of operation (CCM) having a first charge per pulse and a discontinuous conduction mode of operation (DCM) having a second charge per pulse, the second charge per pulse being greater than the first charge per pulse. A power converter device includes a set of switches configured to switch between at least three input-side voltage levels to provide output pulses. The power converter device also includes a control circuit for the set of switches, wherein the control circuit configured to ...More ...Less
3 US10651759B2
Switching power supply device and semiconductor device
Publication/Patent Number: US10651759B2 Publication Date: 2020-05-12 Application Number: 16/281,473 Filing Date: 2019-02-21 Inventor: Tanioku, Masatoshi   Saji, Takashi   Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.   IPC: H02M5/458 Abstract: A switching power supply device includes: a rectifier circuit to which an AC input voltage is input; an input smoothing circuit smoothing a DC input voltage output from the rectifier circuit; a power converter circuit converting the DC input voltage and outputs an output voltage; an overvoltage detection circuit generating an input overvoltage detection signal which is activated when the DC input voltage is higher than a first reference voltage level; and a discharge circuit discharging stored charge stored in the input smoothing circuit. The power converter circuit includes a switching element. Switching of the switching element is stopped and discharging of the stored charge is started, with activation of the input overvoltage detection signal serving as a trigger, and when the input overvoltage detection signal is subsequently inactivated, the discharging is stopped and the switching of the switching element is resumed. A switching power supply device includes: a rectifier circuit to which an AC input voltage is input; an input smoothing circuit smoothing a DC input voltage output from the rectifier circuit; a power converter circuit converting the DC input voltage and outputs an output ...More ...Less
4 US10658943B2
Power conditioning circuit with hybrid full wave rectifiction using matched virtual junction rectifier
Publication/Patent Number: US10658943B2 Publication Date: 2020-05-19 Application Number: 15/201,371 Filing Date: 2016-07-01 Inventor: Luan, Jiyuan   Oye, Michael   Assignee: TEXAS INSTRUMENTS INCORPORED   IPC: H02J7/00 Abstract: An input power conditioning circuit (PCC) for a switched-mode power converter includes a hybrid full wave rectifier. Hybrid rectification is provided by a main rectifier and a matched virtual junction (VJ) rectifier, both with four-transistor gate fully cross-coupled. The VJ rectifier includes a voltage divider (such as a resistive voltage divider) to generate a virtual junction reference voltage VJ_ref (which can be less than transistor Vth). A power conversion controller (such as a boost controller) includes circuitry (such as an error amplifier) to regulate the input voltage VIN (main rectifier) to be substantially equal to VJ_ref from the VJ rectifier. Hybrid rectification, with VIN regulation, can be used to eliminate reverse (flow back) current, improving power conversion efficiency. An input power conditioning circuit (PCC) for a switched-mode power converter includes a hybrid full wave rectifier. Hybrid rectification is provided by a main rectifier and a matched virtual junction (VJ) rectifier, both with four-transistor gate fully cross-coupled. The VJ ...More ...Less
5 US10656217B2
Voltage regulator systems with fault indication and reporting
Publication/Patent Number: US10656217B2 Publication Date: 2020-05-19 Application Number: 16/235,284 Filing Date: 2018-12-28 Inventor: Subotski, Aliaksandr   Bernacchia, Giuseppe   Clavette, Danny   Tang, Benjamim   Assignee: Infineon Technologies Austria AG   IPC: G01R31/40 Abstract: A voltage regulator controller includes a first pin for receiving aggregate temperature information from a plurality of power stages, a plurality of second pins each for receiving phase current information from one of the power stages, control circuitry for controlling the power stages, detection circuitry for detecting signal levels at the first and second pins, and fault analysis circuitry for identifying the type of reported fault and the power stage that reported the fault based on the detected signal levels at the first and second pins and state information accessible by the controller. Aggregate temperature information is reported at the first pin in a first nominal range, and phase current information is reported at each of the second pins in a second nominal range. Each reported fault type has a unique fault signature at the first and second pins, which is outside at least one of the nominal ranges. A voltage regulator controller includes a first pin for receiving aggregate temperature information from a plurality of power stages, a plurality of second pins each for receiving phase current information from one of the power stages, control circuitry for controlling the power ...More ...Less
6 US10608631B2
Bridge output circuit, motor driver device and semiconductor device
Publication/Patent Number: US10608631B2 Publication Date: 2020-03-31 Application Number: 16/416,612 Filing Date: 2019-05-20 Inventor: Sugie, Hisashi   Assignee: ROHM CO., LTD.   IPC: H03K17/0812 Abstract: A bridge output circuit includes: a voltage-controlled first transistor provided between a first power supply terminal and an output terminal; a voltage-controlled second transistor provided between the output terminal and a second power supply terminal having a potential lower than the potential of the first power supply terminal; a first OFF detection circuit detecting whether the first transistor is in an OFF state based on a gate voltage of the first transistor; a second OFF detection circuit detecting whether the second transistor is in an OFF state based on a gate voltage of the second transistor; and an output control circuit performing a first source transition operation of turning off the second transistor and then turning on the first transistor, and then performing a second source transition operation of turning off the first transistor and then turning on the second transistor. A bridge output circuit includes: a voltage-controlled first transistor provided between a first power supply terminal and an output terminal; a voltage-controlled second transistor provided between the output terminal and a second power supply terminal having a potential lower ...More ...Less
7 US10581264B2
Adapter and charging control method
Publication/Patent Number: US10581264B2 Publication Date: 2020-03-03 Application Number: 15/561,713 Filing Date: 2017-01-07 Inventor: Tian, Chen   Zhang, Jialiang   Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.   IPC: H02J7/00 Abstract: An adapter (10) and a charging control method, the adapter (10) comprising: a power conversion unit (11), used for converting an inputted alternating current so as to obtain an output voltage and an output current of the adapter (10), the output current of the adapter (10) being an alternating current or a pulsed direct current; a voltage holding unit (12), an input end of the voltage holding unit (12) being connected to the power conversion unit (11), the voltage holding unit (12) being used for obtaining an input voltage having a pulsed waveform from the power conversion unit (11) and converting the input voltage having the pulsed waveform into a target voltage, an output end of the voltage holding unit (12) being connected to a device in the adapter (10), the target voltage being used to power the device in the adapter (10), a peak value of the target voltage being between the lowest operating voltage and the highest operating voltage of the device. The adapter (10) reduces lithium separation in batteries, and increases the service life of batteries. An adapter (10) and a charging control method, the adapter (10) comprising: a power conversion unit (11), used for converting an inputted alternating current so as to obtain an output voltage and an output current of the adapter (10), the output current of the adapter (10) being ...More ...Less
8 US10554119B1
Inverter apparatus with overcurrent protection control
Publication/Patent Number: US10554119B1 Publication Date: 2020-02-04 Application Number: 16/239,328 Filing Date: 2019-01-03 Inventor: Kao, Chao-li   Lin, Hung-chieh   Hsieh, Yi-ping   Huang, Jin-zhong   Kuo, Chao-lung   Tseng, Po-hsin   Chen, Hong-wen   Assignee: DELTA ELECTRONICS, INC.   IPC: H02M1/32 Abstract: An inverter apparatus with overcurrent protection control includes a first terminal of a DC input terminal connected to an AC output terminal through a first switch element and a second switch element, and a second terminal of the DC input terminal connected to the AC output terminal through a fourth switch element and a third switch element. An intermediate potential terminal is connected to a fifth switch element and a sixth switch element, and connected to the AC output terminal through the fifth switch element and the second switch element, and connected to the AC output terminal through the sixth switch element and the third switch element. When the control unit determines that the inverter apparatus is in an overcurrent state, the control unit controls a sequence of turning off the inverter apparatus to be the second switch element, the first switch element, and the sixth switch element. An inverter apparatus with overcurrent protection control includes a first terminal of a DC input terminal connected to an AC output terminal through a first switch element and a second switch element, and a second terminal of the DC input terminal connected to the AC output ...More ...Less
9 US10622910B2
Semiconductor device and method of operating the same
Publication/Patent Number: US10622910B2 Publication Date: 2020-04-14 Application Number: 15/802,591 Filing Date: 2017-11-03 Inventor: Nomiyama, Takahiro   Moon, Sung Woo   Ko, Yus   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H02M7/217 Abstract: Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer according to the second voltage and output a third voltage in correspondence with an operation time of the timer. A driver may drive a transistor with a fourth voltage generated by the driver according to the third voltage. A calibration circuit may generate a timer calibration signal based on the second voltage and the fourth voltage. The timer calibration signal may be provided to the timer circuit and used to calibrate the operation time of the timer. More efficient rectification, with reduced occurrence of reverse current, may thereby be realized. Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer ...More ...Less
10 US10615791B2
Device for controlling a transistor
Publication/Patent Number: US10615791B2 Publication Date: 2020-04-07 Application Number: 16/340,053 Filing Date: 2017-10-17 Inventor: Le, Bars David   Morel, Benoît   Stephan, Hervé   Segonnes, Sébastien   Assignee: THALES   IPC: H03B1/00 Abstract: The present invention relates to a device for controlling a transistor, comprising: a separating assembly for generating a first voltage, a transformer for obtaining a first and second converted voltage from the first voltage, a rectifier circuit for generating a third voltage from parts of the same sign of the first converted voltage and of the opposite of the second converted voltage, a latch for generating a fourth voltage from the converted voltages, a switching assembly for multiplying the third voltage with a fourth voltage normalized in order to obtain a multiplied voltage, and a shifting circuit for shifting the multiplied amplitude in order to obtain a control voltage. The present invention relates to a device for controlling a transistor, comprising: a separating assembly for generating a first voltage, a transformer for obtaining a first and second converted voltage from the first voltage, a rectifier ...More ...Less
11 US10630080B1
Super-fast transient response (STR) AC/DC Converter for high power density charging application
Publication/Patent Number: US10630080B1 Publication Date: 2020-04-21 Application Number: 16/457,817 Filing Date: 2019-06-28 Inventor: Huang, Pei-lun   Chen, Yu-ming   Lin, Tien-chi   Cheng, Jung-pei   Yu, Yueh-ping   Niu, Zhi-qiang   Zhang, Xiaotian   Wang, Long-ching   Assignee: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.   IPC: H02J7/00 Abstract: A charger comprises a housing, a first multi-layer printed circuit board (PCB), a second multi-layer PCB, and a third multi-layer PCB. The first PCB comprises at least a portion of a primary side circuit. The second PCB comprises at least a portion of a secondary side circuit. The third PCB is perpendicular to the first PCB and the second PCB. An isolation coupling element is disposed on the third PCB. The isolation coupling element comprises a multi-layer PCB. The first PCB comprises a high voltage (HV) semiconductor package. A surface of a die paddle of the HV semiconductor package is exposed from a molding encapsulation of the HV semiconductor package. A charger comprises a housing, a first multi-layer printed circuit board (PCB), a second multi-layer PCB, and a third multi-layer PCB. The first PCB comprises at least a portion of a primary side circuit. The second PCB comprises at least a portion of a secondary side circuit ...More ...Less
12 US10637364B1
Adaptive control of resonant power converters
Publication/Patent Number: US10637364B1 Publication Date: 2020-04-28 Application Number: 16/177,561 Filing Date: 2018-11-01 Inventor: Vinciarelli, Patrizio   Assignee: VLT, Inc.   IPC: H02M3/335 Abstract: A power converter including a transformer, a resonant circuit including the transformer and a resonant capacitor having a characteristic resonant frequency and period, and output circuitry connected to the transformer for delivering a rectified output voltage to a load. Primary switches drive the resonant circuit, a switch controller operates the primary switches in a series of converter operating cycles which include power transfer intervals of adjustable duration during which a resonant current at the characteristic resonant frequency flows through a winding of the transformer. The operating cycles may also include energy recycling intervals of variable duration for charging and discharging capacitances within the converter. A gate driver includes a transformer, a plurality of switches, a current monitor, and a controller that operates the switches in a series of driver operating cycles having adjustable ON periods and adjustable transition periods during which capacitances are resonantly charged and discharged. A power converter including a transformer, a resonant circuit including the transformer and a resonant capacitor having a characteristic resonant frequency and period, and output circuitry connected to the transformer for delivering a rectified output voltage to a load. Primary ...More ...Less
13 US10637362B2
Power supply having two quadrant converter and techniques for operation
Publication/Patent Number: US10637362B2 Publication Date: 2020-04-28 Application Number: 16/284,183 Filing Date: 2019-02-25 Inventor: Mnich, Andrzej   Assignee: ESAB AB   IPC: H02M3/335 Abstract: A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation of the power supply. A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation ...More ...Less