公开(公告)号：US20190068059A1

公开(公告)日：2019-02-28

申请号：US16114331

申请日：2018-08-28

Applicant: ASUSTeK COMPUTER INC.

Inventor： Wei-Bo HU ,  Zhao-Long DONG ,  Ching-Ji LIANG

IPC: H02M3/158 ,  G05F1/10 ,  H02M3/335 ,  H02M1/38

Abstract: A power conversion circuit includes a voltage regulator circuit and a detection circuit. The voltage regulator circuit includes a first switch and a second switch. A first end of the first switch receives an input voltage, and a control end of the first switch receives a first drive signal. The second switch is coupled between a second end of the first switch and the ground, and is turned on or off based on a second drive signal. The first switch and the second switch regulate the input voltage to output an output voltage. The detection circuit is configured to determine whether the first switch is short-circuited or not based on a voltage level of at least one of the first end, the second end, or the control end of the first switch, and adjust the second drive signal when the first switch is short-circuited, to turn on the second switch.

公开(公告)号：US20140359329A1

公开(公告)日：2014-12-04

申请号：US14279341

申请日：2014-05-16

Applicant: ASUSTeK COMPUTER INC.

Inventor： Xiao-Feng ZHOU ,  Ching-Ji LIANG

IPC: G06F1/32

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.

Abstract translation: 适用于电子设备的自适应功率开关电路包括多栅极功率开关模块，监测模块和驱动控制器电路。 多栅极功率开关模块包括并联连接的多个功率开关单元。 电源开关单元分别包括一个门控制端子。 监控模块用于监控电子设备的工作负载。 驱动控制电路耦合到监控模块，以选择性地禁用门控制端子以形成多个配置。 驱动控制电路根据操作负载选择一种配置来操作多门电源开关模块。

公开(公告)号：US20140225584A1

公开(公告)日：2014-08-14

申请号：US14161701

申请日：2014-01-23

Applicant: ASUSTeK COMPUTER INC.

Inventor： Zhao-Long DONG ,  Ching-Ji LIANG

IPC: H02M3/157

CPC classification number: H02M3/156 ,  H02M1/32 ,  H02M2001/0025

Abstract: A switching power supply circuit is disclosed in an embodiment. The switching power supply circuit includes a power output stage, a pulse width modulation (PWM) signal generator, a compensation module, and a overshooting protection module. The power output stage is used for generating an output signal to drive a load device. The PWM signal generator generates a pulse width modulation (PWM) signal which is used for controlling the power output stage. The compensation module is used for generating a compensation signal to the PWM signal generator according to the output signal. The overshooting protection module receives the output signal to enable or disable the PWM signal generator.

Abstract translation: 在一个实施例中公开了开关电源电路。 开关电源电路包括功率输出级，脉冲宽度调制（PWM）信号发生器，补偿模块和过冲保护模块。 功率输出级用于产生驱动负载装置的输出信号。 PWM信号发生器产生用于控制功率输出级的脉宽调制（PWM）信号。 补偿模块用于根据输出信号向PWM信号发生器产生补偿信号。 过冲保护模块接收输出信号以启用或禁用PWM信号发生器。

公开(公告)号：US20160126721A1

公开(公告)日：2016-05-05

申请号：US14856572

申请日：2015-09-17

Applicant: ASUSTeK COMPUTER INC.

Inventor： Xiao-Feng ZHOU ,  Wei HAN ,  Ching-Ji LIANG

IPC: 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.

Abstract translation: 提供电子设备和电源保护方法。 电子设备包括传送端口，开关，第一检测单元和第二检测单元。 传输端口向外部设备提供驱动电压。 开关耦合在传送端口和电源之间，并且根据第一控制信号和第二控制信号中的至少一个有选择地关闭开关。 当驱动电压的电压降超过阈值电压时，第一检测单元产生第一控制信号。 第二检测单元通过检测驱动电压产生采样电压，并且当采样电压低于第一参考电压时产生第二控制信号。 当外部设备插入/拔出传输端口时，电子设备可以提供电源保护。

公开(公告)号：US20190123550A1

公开(公告)日：2019-04-25

申请号：US16151642

申请日：2018-10-04

Applicant: ASUSTeK COMPUTER INC.

Inventor： Kang-Xiang HUI ,  Zhao-Long DONG ,  Ching-Ji LIANG

IPC: H02H9/02 ,  H02H7/12 ,  G05F1/567 ,  G01K7/24

Abstract: A power system includes a control circuit, a power conversion circuit, a current detection circuit and a overheat detection circuit. The control circuit is for generating one or more pulse signal. The power conversion circuit is electrically coupled to the control circuit, for generating an output current according to the pulse signal. The current detection circuit is electrically coupled to the power conversion circuit, for generating a sensing current according to the output current. The overheat detection circuit is electrically coupled to the current detection circuit and the control circuit, for generating the correction current according to a temperature of the power conversion circuit. The control circuit adjusts a duty ratio of the pulse signal according to a correction sensing current to adjust the output current, and the correction sensing current is a sum of the value of the sensing current and the correction current.

公开(公告)号：US20190089248A1

公开(公告)日：2019-03-21

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 ,  H02M1/36 ,  H02M1/08 ,  G01R19/165

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：US20170156185A1

公开(公告)日：2017-06-01

申请号：US15343228

申请日：2016-11-04

Applicant: ASUSTeK COMPUTER INC.

Inventor： Xiao-Feng ZHOU ,  Ching-Ji LIANG

IPC: 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.