公开(公告)号：US11133686B2

公开(公告)日：2021-09-28

申请号：US16283893

申请日：2019-02-25

Applicant: ASUSTeK COMPUTER INC.

Inventor： Kai-Chun Liang ,  Wei-Chen Tu ,  Hsiang-Jui Hung ,  Xiao-Feng Zhou ,  Wen-Hsiang Yang

IPC: H02J7/00 ,  H01M10/48 ,  H01M10/44 ,  G01R31/382

Abstract: A battery management device includes a detection circuit, a charge control circuit, and a discharge control circuit. The detection circuit is configured to output a first control signal and a second control signal according to a volume of a rechargeable battery. The charge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to open a charge loop of the rechargeable battery according to the first control signal. The discharge control circuit is electrically coupled to the rechargeable battery and the detection circuit, and configured to close a discharge path of the rechargeable battery according to the second control signal.

公开(公告)号：US09713218B2

公开(公告)日：2017-07-18

申请号：US15343228

申请日：2016-11-04

Applicant: ASUSTek COMPUTER INC.

Inventor： Xiao-Feng Zhou ,  Ching-Ji Liang

IPC: G05F1/00 ,  H05B33/08

CPC classification number: H05B33/0845

Abstract: A dimming control circuit for adjusting brightness of a light-emitting component is provided. The dimming control circuit includes a driving transistor, an amplifier and a control circuit. The driving transistor is coupled to the light-emitting component The amplifier includes a first input terminal and an output terminal. The output terminal is coupled to a gate of the driving transistor. The control circuit is coupled to the amplifier. The control circuit generates a second analog signal to the first input terminal of the amplifier according to a first analog signal. A slew rate of the second analog signal below the slew rate of the first analog signal and the amplifier controls the driving transistor to adjust a driving current flowing through the light-emitting component according to the second analog signal.

公开(公告)号：US10897198B2

公开(公告)日：2021-01-19

申请号：US16128091

申请日：2018-09-11

Applicant: ASUSTeK COMPUTER INC.

Inventor： Tao Chen ,  Xiao-Feng Zhou ,  Ching-Ji Liang

IPC: H02M3/158 ,  H02H7/10 ,  H02M1/36 ,  G01R19/165 ,  H02M1/08 ,  H02H3/00 ,  H02M1/32 ,  H03K5/24

Abstract: A voltage conversion apparatus includes a power supply circuit with a first switch, a voltage conversion circuit, and a protective circuit with a detection circuit. The first switch transmits a power to generate an input voltage. The voltage conversion circuit generates a first voltage. A second switch of the voltage conversion circuit receives the input voltage. A third switch of the voltage conversion circuit is coupled between the second switch and a ground terminal. The detection circuit generates a first control signal based on the first voltage, a second voltage that corresponds to the first voltage, and a reference voltage. When a voltage value of an error signal is less than the reference voltage, the detection circuit outputs the first control signal to turn off the first switch. The voltage value of the error signal corresponds to a voltage difference between the first voltage and the second voltage.

公开(公告)号：US09882372B2

公开(公告)日：2018-01-30

申请号：US14856572

申请日：2015-09-17

Applicant: ASUSTeK COMPUTER INC.

Inventor： Xiao-Feng Zhou ,  Wei Han ,  Ching-Ji Liang

IPC: H05B41/36 ,  G05F1/46 ,  H05B33/08 ,  H02M3/335 ,  H02H9/00 ,  H02H3/20

CPC classification number: H02H9/001 ,  H02H3/207

Abstract: An electronic device and a power protection method are provided. The electronic device includes a transfer port, a switch, a first detecting unit and a second detecting unit. The transfer port provides a driving voltage to an external device. The switch is coupled between the transfer port and a supply power source, and the switch is selectively turned off according to at least one of a first control signal and a second control signal. The first detecting unit generates the first control signal when a voltage drop of the driving voltage exceeds a threshold voltage. The second detecting unit generates a sampling voltage by detecting the driving voltage and generates the second control signal when the sampling voltage is lower than a first reference voltage. The electronic device can provide a power protection when an external device is plugged in/out the transfer port.

公开(公告)号：US09614372B2

公开(公告)日：2017-04-04

申请号：US14279341

申请日：2014-05-16

Applicant: ASUSTeK COMPUTER INC.

Inventor： Xiao-Feng Zhou ,  Ching-Ji Liang

IPC: G06F1/32 ,  H02J1/02 ,  H02M1/088 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02J1/02 ,  H02M1/088 ,  H02M3/158 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

Abstract: An adaptive power-switch circuit suitable for an electronic device includes a multi-gate power switch module, a monitoring module and a driving controller circuit. The multi-gate power switch module includes to plurality of power switch units connected in parallel. The power switch units include a gate control terminal respectively. The monitoring module is used to monitor an operating load of the electronic device. The driving control circuit is coupled to the monitoring module to selectively disable the gate controlling terminals to form a plurality of configurations. The driving control circuit selects one of the configurations to operate the multi-gate power switch module according to the operating load.