公开(公告)号：US20190190398A1

公开(公告)日：2019-06-20

申请号：US16281473

申请日：2019-02-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masatoshi TANIOKU ,  Takashi SAJI

IPC: H02M5/458 ,  H02M1/32 ,  H02M1/36 ,  H02H9/04

CPC classification number: H02M5/4585 ,  H02H9/04 ,  H02M1/32 ,  H02M1/36 ,  H02M3/28

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.

公开(公告)号：US20180375342A1

公开(公告)日：2018-12-27

申请号：US15631512

申请日：2017-06-23

Applicant: Dell Products L.P.

Inventor： Andrew Thomas Sultenfuss ,  Richard Christopher Thompson

IPC: H02J7/00 ,  H01R13/66 ,  H02M3/28 ,  H01R31/06

CPC classification number: H02J7/0004 ,  H01R13/6675 ,  H01R31/065 ,  H02J7/0022 ,  H02J7/0055 ,  H02J7/0068 ,  H02J7/008 ,  H02J7/0091 ,  H02M3/28

Abstract: An external power storage adapter (PSA) may supply electrical power to a portable information handling system or other power consuming device. The power storage adapter may include an AC-DC converter, a battery, and intelligent power management functionality. A PSA controller may determine whether electrical power supplied by the power storage adapter should be sourced from the AC-DC converter or from the battery based on various operating parameters of the power storage adapter, such the temperature of the power storage adapter, the state of charge of the battery, the amount of electrical power being supplied by the AC-DC converter, or the amount of time that the AC-DC converter has been supplying electrical power. The power storage adapter may output power to a port of the portable information handling system, such as a USB Type-C port, over a variable power bus.

公开(公告)号：US20180309382A1

公开(公告)日：2018-10-25

申请号：US16022270

申请日：2018-06-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuuki NAKAJIMA ,  Junya MITSUI ,  Toshiaki SATOU

IPC: H02M7/48 ,  H02M7/12 ,  H02P27/06 ,  H02P6/08 ,  F24F11/30

CPC classification number: H02M7/48 ,  F24F1/20 ,  F24F11/30 ,  H02M3/28 ,  H02M7/04 ,  H02M7/12 ,  H02P6/08 ,  H02P27/06

Abstract: A power supply device is provided with a diode rectifier circuit having an input connected to an AC power source, the output of the diode rectifier circuit producing a rectified voltage; a capacitor connected to the diode rectifier to be charged by the rectified voltage; and a controller configured to receive as input a detection signal representing a charging current flowing into the capacitor, the controller being further configured to calculate a voltage frequency, a cycle, or a power voltage phase of the AC power on the basis of the detection signal. At least one of the following is used to detect the charging current flowing into the capacitor and produce the detection signal: a photocoupler; an amplifier circuit including a shunt resistor and an operational amplifier; and a current transformer.

公开(公告)号：US20180241312A1

公开(公告)日：2018-08-23

申请号：US15782753

申请日：2017-10-12

Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.

Inventor： Choong Yul CHA ,  Dandan LI ,  Hung-Ming CHIEN ,  Long BU ,  Stephen C. AU

IPC: H02M3/158 ,  H02M3/137 ,  H02M3/28

CPC classification number: H02M3/1588 ,  H02M3/137 ,  H02M3/158 ,  H02M3/28 ,  H02M2001/0045 ,  H03L7/06 ,  H03L7/08 ,  H03L7/18

Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.

公开(公告)号：US20180190647A1

公开(公告)日：2018-07-05

申请号：US15675939

申请日：2017-08-14

Applicant: L. Pierre de Rochemont

Inventor： L. Pierre de Rochemont

IPC: H01L27/06 ,  H01L29/423 ,  H01L29/739 ,  H01L29/78 ,  H01L23/64 ,  H01L25/16 ,  H01F17/06 ,  H01F27/28 ,  H01F30/16 ,  H02M3/28 ,  H01L29/16

CPC classification number: H01L27/0629 ,  H01F17/06 ,  H01F27/2804 ,  H01F30/16 ,  H01L23/642 ,  H01L23/645 ,  H01L25/16 ,  H01L29/1604 ,  H01L29/4238 ,  H01L29/7395 ,  H01L29/7803 ,  H01L29/7804 ,  H01L2924/0002 ,  H02M3/28 ,  Y10T428/12493 ,  H01L2924/00

Abstract: A monolithic power management module provides a chip carrier with surfaces, ground traces, signal and power interconnects; a three dimensional FET formed on the chip carrier to modulate currents through the carrier or on the carrier surface; a toroidal inductor or transformer coil with a ceramic magnetic core formed on the chip carrier adjacent to the FET and having a first winding connected to the FET, and a plurality of passive ceramic components formed on the chip carrier surface.

公开(公告)号：US09998025B1

公开(公告)日：2018-06-12

申请号：US15341518

申请日：2016-11-02

Applicant: Westinghouse Electric Company LLC

Inventor： Shawn C. Stafford

IPC: H02M7/04 ,  H02M1/32 ,  H02M1/44 ,  G21D1/02 ,  G21C17/06

CPC classification number: G21D1/02 ,  H02M3/28 ,  H02M7/217

Abstract: A high voltage power supply comprising a Line Powered Switcher module for converting a mains powered alternating current input to a direct current output and a High Voltage Switcher module for raising the voltage level of the direct current output. Both modules are independent switched mode power supplies and the high voltage power supply includes ripple, overcurrent and overvoltage protection as well as protection against electromagnetic interference.

公开(公告)号：US09985548B2

公开(公告)日：2018-05-29

申请号：US15626347

申请日：2017-06-19

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Li Lin ,  Zhibo Tao ,  Chih Hsien Hsieh ,  Yue-Hong Tang ,  Ching Wen Fu ,  Ju-Hyun Kim

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/28 ,  H02M3/24

CPC classification number: H02M3/33592 ,  H02M3/24 ,  H02M3/28 ,  H02M3/285 ,  H02M3/335 ,  H02M3/33515 ,  H02M2001/0012

Abstract: A method for communicating with a power converter comprises initiating a communication sequence by sensing a first distortion of a sensed waveform during a discharge period of a first power transfer cycle of the power converter. The sensed waveform is proportional to a secondary current of the power converter. At a primary side of the power converter, a data bit is received from a secondary side of the power converter, by sensing a second distortion to represent one state of the data bit and sending an absence of the second distortion to represent another state of the data bit. The secondary distortion is applied to the secondary current during the discharge period of a subsequent power transfer cycle.

公开(公告)号：US09960683B2

公开(公告)日：2018-05-01

申请号：US14499405

申请日：2014-09-29

Applicant: TDK Corporation

Inventor： Ken Matsuura

IPC: H01F5/00 ,  H02M3/24 ,  H01F19/00 ,  H01F27/28 ,  H02M3/28

CPC classification number: H02M3/24 ,  H01F27/2804 ,  H01F2027/2809 ,  H02M3/28

Abstract: An electronic circuit device includes a board and a transformer that is provided at the board and that has a primary winding member and a secondary winding member. The primary winding member is configured with a primary winding that is provided at the board and a primary side element that is electrically connected to the primary winding member. The secondary winding member is configured with a secondary winding that is provided at the board and a secondary side element that is electrically connected to the secondary winding member.

公开(公告)号：US20180091053A1

公开(公告)日：2018-03-29

申请号：US15520207

申请日：2016-10-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Enhui Guan ,  Shuo Chen

IPC: H02M3/158 ,  H02M3/07 ,  H02M3/142 ,  H02M3/139 ,  H02M3/28

CPC classification number: H02M3/158 ,  H02M3/07 ,  H02M3/139 ,  H02M3/142 ,  H02M3/28

Abstract: The present application discloses a direct current (DC) converter including a voltage divider for dividing a voltage provided by a DC voltage source, having a positive DC voltage input terminal, a negative DC voltage input terminal, and a divided voltage output terminal; a conversion circuit having a first switch, a second switch, an inductor unit, a first unidirectional conductor, and a second unidirectional conductor; a positive converted voltage output terminal; and a negative converted voltage output terminal.

公开(公告)号：US09929635B2

公开(公告)日：2018-03-27

申请号：US14988091

申请日：2016-01-05

Applicant: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED ,  LITE-ON TECHNOLOGY CORP.

Inventor： I-Chao Chiu ,  Yeh Guan

IPC: H02J1/02 ,  H02M1/12 ,  H02M1/44 ,  H02M3/28 ,  H02M7/04 ,  H02M1/00

CPC classification number: H02M1/12 ,  H02M1/126 ,  H02M1/44 ,  H02M3/28 ,  H02M3/335 ,  H02M7/04 ,  H02M2001/007

Abstract: A leakage current suppression circuit is adapted for use with an AC-to-DC power supply that includes a bridge rectifier converting an AC input voltage into a DC voltage and outputting the DC voltage through a first output terminal and a grounded second output terminal thereof, a DC-to-DC converter converting the DC voltage into a predetermined DC output voltage and outputting the DC output voltage through a first output end and a grounded second output end thereof, and a capacitor coupled to the second output terminal of the bridge rectifier at one terminal thereof. The leakage current suppression circuit includes a first impedance unit and a second impedance unit each coupled in parallel between the other terminal of the capacitor and ground.