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公开(公告)号：US09240716B2
公开(公告)日：2016-01-19
申请号：US14161701
申请日：2014-01-23
发明人： Zhao-Long Dong , Ching-Ji Liang
CPC分类号： H02M3/156 , H02M1/32 , H02M2001/0025
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US09882372B2
公开(公告)日：2018-01-30
申请号：US14856572
申请日：2015-09-17
发明人： Xiao-Feng Zhou , Wei Han , Ching-Ji Liang
摘要： 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.
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公开(公告)号：US09614372B2
公开(公告)日：2017-04-04
申请号：US14279341
申请日：2014-05-16
发明人： Xiao-Feng Zhou , Ching-Ji Liang
CPC分类号： H02J1/02 , H02M1/088 , H02M3/158 , H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： 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.
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公开(公告)号：US10756626B2
公开(公告)日：2020-08-25
申请号：US16114331
申请日：2018-08-28
发明人： Wei-Bo Hu , Zhao-Long Dong , Ching-Ji Liang
摘要： 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.
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5.发明申请公开(公告)号：US20160374163A1
公开(公告)日：2016-12-22
申请号：US15183796
申请日：2016-06-16
发明人： Tao Jiang , Xiaofeng Zhou , Ching-Ji Liang
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0842
摘要： A driving circuit for providing a driving voltage to a first flash light-emitting diode is provided. The driving circuit includes an inductor, a first switch, a second switch, a capacitor, a third switch, a fourth switch and a control unit. The control unit controls operating modes of the inductor and the capacitor to a boost mode or a buck mode according to a driving mode of the first flash light-emitting diode, and determines whether to switch the operating modes of the inductor and the capacitor according to a first driving current flowing through the first flash light-emitting diode. An operating method for the driving circuit is also provided.
摘要翻译： 提供了用于向第一闪光发光二极管提供驱动电压的驱动电路。 驱动电路包括电感器，第一开关，第二开关，电容器，第三开关，第四开关和控制单元。 根据第一闪光发光二极管的驱动模式，控制单元将电感器和电容器的工作模式控制为升压模式或降压模式，并且根据第一闪光发光二极管的驱动模式确定是否切换电感器和电容器的工作模式 流过第一闪光发光二极管的第一驱动电流。 还提供了用于驱动电路的操作方法。
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公开(公告)号：US10897198B2
公开(公告)日：2021-01-19
申请号：US16128091
申请日：2018-09-11
发明人： Tao Chen , Xiao-Feng Zhou , Ching-Ji Liang
摘要： 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.
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公开(公告)号：US10916937B2
公开(公告)日：2021-02-09
申请号：US16151642
申请日：2018-10-04
发明人： Kang-Xiang Hui , Zhao-Long Dong , Ching-Ji Liang
摘要： 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.
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公开(公告)号：US09769889B2
公开(公告)日：2017-09-19
申请号：US15183796
申请日：2016-06-16
发明人： Tao Jiang , Xiaofeng Zhou , Ching-Ji Liang
CPC分类号： H05B33/0815 , H05B33/0842
摘要： A driving circuit for providing a driving voltage to a first flash light-emitting diode is provided. The driving circuit includes an inductor, a first switch, a second switch, a capacitor, a third switch, a fourth switch and a control unit. The control unit controls operating modes of the inductor and the capacitor to a boost mode or a buck mode according to a driving mode of the first flash light-emitting diode, and determines whether to switch the operating modes of the inductor and the capacitor according to a first driving current flowing through the first flash light-emitting diode. An operating method for the driving circuit is also provided.
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公开(公告)号：US09713218B2
公开(公告)日：2017-07-18
申请号：US15343228
申请日：2016-11-04
发明人： Xiao-Feng Zhou , Ching-Ji Liang
CPC分类号： H05B33/0845
摘要： 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.
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