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：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：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.