公开(公告)号：US20190207508A1

公开(公告)日：2019-07-04

申请号：US15772727

申请日：2016-11-29

申请人： Sanden Automotive Components Corporation

发明人： Takeo TSUKAMOTO ,  Daisuke HIRONO

IPC分类号： H02M1/32 ,  H02M7/5387 ,  H02M1/14 ,  H02P27/08 ,  H02P29/028 ,  H02P21/22

CPC分类号： H02M1/32 ,  H02M1/14 ,  H02M1/15 ,  H02M7/53871 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/325 ,  H02P21/22 ,  H02P27/08 ,  H02P29/028

摘要： An inverter device that generates an AC voltage from a DC voltage and drives an electric motor 2 includes: smoothing capacitors 3 for reducing the ripple voltage superimposed on the DC voltage; an inverter circuit 4 having a plurality of switching elements 40u to 40w, 41u to 41w; and a control unit 5 for controlling operation of the plurality of switching elements 40u to 40w, 41u to 41w of the inverter circuit 4. When an open fault has occurred in the smoothing capacitors 3, the control unit 5 limits the electric current flowing through the electric motor 2 by controlling the operation of the plurality of switching elements 40u to 40w, 41u to 41w.

公开(公告)号：US20190129868A1

公开(公告)日：2019-05-02

申请号：US16174213

申请日：2018-10-29

申请人： Chengdu Monolithic Power Systems Co., Ltd.

发明人： Lijie Jiang ,  Xiaokang Wu ,  Suhua Luo ,  Qian Ouyang

IPC分类号： G06F13/10 ,  H02M3/04

CPC分类号： G06F13/10 ,  G05B2219/25401 ,  G05F1/10 ,  G06F2213/40 ,  H02M3/04 ,  H02M3/158 ,  H02M2001/0025

摘要： An auto-loop regulation system for a voltage regulator receives a plurality of pre-determined loop parameters through an interactive computing equipment, and the voltage regulator operates according to the plurality of pre-determined loop parameters, wherein the interactive computing equipment regulates at least one of the loop parameters automatically in real time according to an online loop value when the voltage regulator is operating online, and the interactive computing equipment keeps regulating the loop parameters until the online value of the voltage regulator matches with a target value.

公开(公告)号：US20190103813A1

公开(公告)日：2019-04-04

申请号：US16207956

申请日：2018-12-03

申请人： PixArt Imaging Inc.

发明人： LIEN-SHENG WEI

IPC分类号： H02M3/157 ,  H02M3/10 ,  G05F1/613 ,  H02M1/00 ,  H02M3/156

CPC分类号： H02M3/157 ,  G05F1/461 ,  G05F1/463 ,  G05F1/468 ,  G05F1/56 ,  G05F1/613 ,  G05F3/245 ,  H02M3/10 ,  H02M2001/0025 ,  H02M2003/1566

摘要： There is provided a reference voltage generator for providing an adaptive voltage. The reference voltage generator includes a steady current source and a PMOS transistor and an NMOS transistor cascaded to each other. A reference voltage provided by the reference voltage generator is determined by gate-source voltages of the PMOS transistor and the NMOS transistor. As said gate-source voltages vary with the temperature and manufacturing process, the reference voltage forms a self-adaptive voltage.

公开(公告)号：US20190056757A1

公开(公告)日：2019-02-21

申请号：US16044486

申请日：2018-07-24

申请人： Rolls-Royce North American Technologies Inc.

发明人： Andrew Bollman ,  Eric Duane Schneider

IPC分类号： G05F1/10 ,  H02M3/07 ,  H02P9/10

CPC分类号： G05F1/10 ,  H02M3/07 ,  H02M3/156 ,  H02M3/1563 ,  H02M2001/0006 ,  H02M2001/0025 ,  H02M2003/1566 ,  H02P9/10

摘要： A system includes a DC to DC converter coupled with a load, a power source bus coupled with an input of the DC to DC converter, a capacitor coupled in parallel across an output of the DC to DC converter and a controller. The controller may dynamically adjust a bus voltage set point of a bus voltage on the output of the DC to DC converter up or down to prepare for supply of the bus voltage and energy stored in the capacitor to an anticipated load event. The load event may have a load step change that occurs in less than five milliseconds and is greater than about eighty or eighty-five percent of a rated output of the DC to DC converter.

公开(公告)号：US20190052174A1

公开(公告)日：2019-02-14

申请号：US15672341

申请日：2017-08-09

申请人： Infineon Technologies Austria AG

发明人： Xiaowu Gong

IPC分类号： H02M3/335 ,  H02M1/42 ,  G05F1/575 ,  H02M3/156

CPC分类号： H02M3/3353 ,  G05F1/575 ,  H02M1/4258 ,  H02M3/156 ,  H02M3/33507 ,  H02M3/33561 ,  H02M3/33576 ,  H02M3/33592 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/0038 ,  H02M2001/123

摘要： A flyback converter includes a primary-side switch connected to a primary-side winding of a magnetic device and a secondary-side switch connected to a secondary-side winding of the magnetic device. The flyback converter is operated by controlling the primary-side switch to store energy in the magnetic device during ON periods of the primary-side switch, switching on the secondary-side switch synchronously with switching off the primary-side switch to transfer energy from the magnetic device to the secondary side, determining an off time of the secondary-side switch based on a reflected input voltage measured at the secondary-side winding when the primary-side switch is on, accounting for a settling time of the reflected input voltage when determining the off time of the secondary-side switch so that the settling time has little or no effect on the off time, and switching off the secondary-side switch based on the off time.

公开(公告)号：US20190044338A1

公开(公告)日：2019-02-07

申请号：US15903109

申请日：2018-02-23

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

发明人： Yukio Tsunetsugu

IPC分类号： H02J3/38 ,  H02J3/12 ,  H02M1/00

CPC分类号： H02J3/38 ,  H02J3/12 ,  H02M1/00 ,  H02M2001/0025 ,  H03K17/08128

摘要： In one embodiment, a transistor driver includes a first line as a power supply line configured to supply a first voltage, a second line as a power supply line configured to supply a second voltage, and a first controlling transistor provided between the first line and the second line and configured to control a gate voltage of a first transistor to be driven. The driver further includes a third line configured to supply a third voltage that controls a gate voltage of the first controlling transistor, and a power supply circuit connected to the first, second and third lines and configured to vary the third voltage.The driver further includes a depletion P-type transistor including a gate connected to the first line, a drain connected to the second line, and a source connected to the third line.

公开(公告)号：US20180294737A1

公开(公告)日：2018-10-11

申请号：US16010071

申请日：2018-06-15

申请人： Power Integrations, Inc.

发明人： Yury Gaknoki ,  Zongqi Hu ,  Xiang Wu

IPC分类号： H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC分类号： H02M3/33592 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0025 ,  Y02B70/1475

摘要： A controller for use in a power converter comprising a feedback reference circuit coupled to receive a feedback signal representative of an output voltage of the power converter. A feedback reference circuit generates a drive signal in response to the feedback signal and the drive signal is used to control switching of a power switch of the power converter to regulate the output voltage. The controller further comprises an output power control circuit coupled to receive a current sense signal representative of an output current of the power converter and a power signal representative of a desired value of an output power of the power converter. The output power control circuit generates an adjust signal to adjust the feedback signal such that the controller modifies the output voltage to regulate to the desired value of the output power.

公开(公告)号：US20180294726A1

公开(公告)日：2018-10-11

申请号：US15853494

申请日：2017-12-22

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Antonio PRIEGO ,  Neil GIBSON ,  Syed Wasif MEHDI

IPC分类号： H02M3/158

CPC分类号： H02M3/1584 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2003/1566 ,  H02M2003/1586

摘要： A multiphase power regulator includes a plurality of phases coupled in parallel to provide a load current as a combination of phase currents at an output voltage, each phase including at least one power transistor switched to provide a respective phase current based at least in part on a comparator output signal, and a current-sense low pass filter to sense the phase current. The regulator further includes a gm stage to generate the current set point voltage based at least in part on the output voltage, a comparator to compare a voltage from the current-sense low pass filters to the current set point voltage and a current set point adjustment circuit to provide an auxiliary control signal to decrease the current set point voltage responsive to a change in comparator output and then to increase the current set point voltage responsive to another change in comparator output.

公开(公告)号：US10084316B2

公开(公告)日：2018-09-25

申请号：US15105191

申请日：2014-01-31

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Thomas P Sawyers

IPC分类号： B60L11/18 ,  B60L3/00 ,  H01M10/42 ,  H01M10/48 ,  H02J3/38 ,  H02M3/00 ,  H02M7/04 ,  H02J1/12 ,  H02J3/48 ,  H02M1/00

CPC分类号： H02J3/385 ,  H02J1/12 ,  H02J3/387 ,  H02J3/48 ,  H02M3/00 ,  H02M7/04 ,  H02M2001/0025 ,  H02M2001/007

摘要： One example of a device includes an output terminal to electrically couple to a load, a first input terminal to electrically couple to a first voltage source, and a blocking rectifier electrically coupled between the first input terminal and the output terminal. The device includes a second input terminal to electrically couple to a second voltage source. The second input terminal is electrically coupled to the output terminal. The device includes a control circuit to control the second voltage source to prevent a voltage at the output terminal from exceeding a voltage at the first input terminal and to deliver power to the load in place of power delivered by the first voltage source.

公开(公告)号：US20180267085A1

公开(公告)日：2018-09-20

申请号：US15982469

申请日：2018-05-17

申请人： ABB Schweiz AG

发明人： Peter Al-Hokayem

IPC分类号： G01R19/25 ,  H02M1/00

CPC分类号： G01R19/2503 ,  G01R19/0007 ,  G01R19/2509 ,  G01R19/2513 ,  G01R23/02 ,  G01R23/20 ,  G01R25/00 ,  H02J3/40 ,  H02M1/00 ,  H02M1/082 ,  H02M5/4585 ,  H02M7/12 ,  H02M2001/0025

摘要： A method for estimating a fundamental component of an AC voltage includes receiving a timely varying measurement signal of the AC voltage; parametrizing a fundamental component of the AC voltage; and determining parameters of the fundamental component based on minimizing a cost function. The fundamental component has a rated frequency, a variable amplitude and a variable phase shift. The cost function is based on an integral of a norm of a difference between the measurement signal and the parametrized fundamental component via a time horizon. The time horizon starts at an actual time point and goes back via a predefined length. The cost function includes a term based on a norm of the difference between a value of the fundamental component at the actual time point and a value of a previously estimated fundamental component at the actual time point, where the previously estimated fundamental component has been determined for a previous time point.