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公开(公告)号：US09350251B2
公开(公告)日：2016-05-24
申请号：US14493357
申请日：2014-09-23
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
CPC classification number: H02M3/33507 , H02M1/32 , H02M2001/0009
Abstract: A power conversion apparatus and an over power protection method thereof are provided. A number of times a sensing voltage exceeding a reference voltage is counted, so as to determine whether to disable a power switch in the power conversion apparatus according to the number of times the sensing voltage exceeding the reference voltage, in which the sensing voltage corresponds to a current flowing through the power switch on a resistor.
Abstract translation: 提供了电力转换装置及其过功率保护方法。 对感测电压超过参考电压的次数进行计数，以便根据感测电压超过参考电压的次数确定是否禁用电力转换装置中的电力开关，其中感测电压对应于 一个电流流过电阻上的电源开关。
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公开(公告)号：US09343977B2
公开(公告)日：2016-05-17
申请号：US14571003
申请日：2014-12-15
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
CPC classification number: H02M3/33507 , H02M1/32
Abstract: A power conversion apparatus and an over power protection method thereof are provided. A number of times a detection voltage being greater than a first reference voltage and a number of times the detection voltage being greater than a second reference voltage are counted, so as to obtain a first count value and a second count value, in which the detection voltage is a voltage on a resistor in response to a current flowing through a power switch. Stop switching the power switch when the first count value is greater than or equal to a first threshold value or when the second count value is greater than or equal to a second threshold value.
Abstract translation: 提供了电力转换装置及其过功率保护方法。 对大于第一参考电压的检测电压和检测电压大于第二参考电压的次数进行多次计数，以获得第一计数值和第二计数值，其中检测 电压是电流响应于电流流过电源开关的电压。 当第一计数值大于或等于第一阈值时或当第二计数值大于或等于第二阈值时，停止切换电源开关。
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公开(公告)号：US20160043645A1
公开(公告)日：2016-02-11
申请号：US14493357
申请日：2014-09-23
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/32 , H02M2001/0009
Abstract: A power conversion apparatus and an over power protection method thereof are provided. A number of times a sensing voltage exceeding a reference voltage is counted, so as to determine whether to disable a power switch in the power conversion apparatus according to the number of times the sensing voltage exceeding the reference voltage, in which the sensing voltage corresponds to a current flowing through the power switch on a resistor.
Abstract translation: 提供了电力转换装置及其过功率保护方法。 对感测电压超过参考电压的次数进行计数，以便根据感测电压超过参考电压的次数确定是否禁用电力转换装置中的电力开关，其中感测电压对应于 一个电流流过电阻上的电源开关。
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Patent Agency Ranking
公开(公告)号：US20160099648A1
公开(公告)日：2016-04-07
申请号：US14571003
申请日：2014-12-15
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/32
Abstract: A power conversion apparatus and an over power protection method thereof are provided. A number of times a detection voltage being greater than a first reference voltage and a number of times the detection voltage being greater than a second reference voltage are counted, so as to obtain a first count value and a second count value, in which the detection voltage is a voltage on a resistor in response to a current flowing through a power switch. Stop switching the power switch when the first count value is greater than or equal to a first threshold value or when the second count value is greater than or equal to a second threshold value.
Abstract translation: 提供了电力转换装置及其过功率保护方法。 对大于第一参考电压的检测电压和检测电压大于第二参考电压的次数进行多次计数，以获得第一计数值和第二计数值，其中检测 电压是电流响应于电流流过电源开关的电压。 当第一计数值大于或等于第一阈值时或当第二计数值大于或等于第二阈值时，停止切换电源开关。
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公开(公告)号：US10079549B1
公开(公告)日：2018-09-18
申请号：US15663836
申请日：2017-07-31
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
IPC: H02M3/335
CPC classification number: H02M3/33592 , H02M1/08 , H02M2001/0009 , Y02B70/1475
Abstract: A power conversion apparatus and a synchronous rectification (SR) controller thereof are provided. The SR controller includes a first control circuit, a second control circuit, a pull-up circuit and a pull-down circuit. The first control circuit generates a pull-up control signal and a first pull-down signal according to a drain voltage of an SR transistor and a first voltage. The second control circuit compares the drain voltage with a second voltage to generate a second pull-down signal, and selects one of the first pull-down signal and the second pull-down signal as a pull-down control signal. The pull-up circuit and the pull-down circuit regulate a driving voltage on a gate terminal of the SR transistor in response to the pull-up control signal and the pull-down control signal respectively.
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公开(公告)号：US10056845B1
公开(公告)日：2018-08-21
申请号：US15629726
申请日：2017-06-21
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
IPC: H02M3/335
CPC classification number: H02M3/33592 , Y02B70/1475
Abstract: A power conversion apparatus and a synchronous rectification (SR) controller thereof are provided. The SR controller includes a first control circuit, a second control circuit and a third control circuit. The first control circuit compares a drain voltage on a drain terminal of a SR transistor with a first voltage. When the drain voltage is lower than the first voltage, the first control circuit outputs a driving voltage to turn on the SR transistor. The second control circuit generates the driving voltage according to the drain voltage and a second voltage so as to control the SR transistor. The third control circuit compares the drain voltage with a third voltage. When the drain voltage is higher than the third voltage, the third control circuit outputs the driving voltage to turn off the SR transistor.
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公开(公告)号：US20150288286A1
公开(公告)日：2015-10-08
申请号：US14303572
申请日：2014-06-12
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/44 , H02M7/06 , H02M2001/0012 , H02M2001/007 , H02M2001/322
Abstract: A power supply apparatus is provided. The power supply apparatus includes a power conversion circuit, an AC safety capacitor and a control unit. An AC input voltage is received by an input side of the power converting circuit, and is converted to a DC output voltage. The AC safety capacitor is connected across the input side. The control unit controls the operation of the power converting circuit, where the control unit samples and holds a voltage between two terminals of the AC safety capacitor to obtain a holding voltage, and compares the holding voltage and the AC input voltage during each period of a clock signal, so as to decide to discharge electric energy stored by the AC safety capacitor according to a comparison result.
Abstract translation: 提供电源装置。 电源装置包括电力转换电路，交流安全电容器和控制单元。 交流输入电压由功率转换电路的输入侧接收，并被转换成直流输出电压。 交流安全电容器连接在输入端。 控制单元控制功率转换电路的操作，其中控制单元采样并保持AC安全电容器的两个端子之间的电压以获得保持电压，并且在每个周期期间比较保持电压和AC输入电压 时钟信号，以便根据比较结果决定放电由交流安全电容器存储的电能。
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公开(公告)号：US09343976B2
公开(公告)日：2016-05-17
申请号：US14303572
申请日：2014-06-12
Applicant: Power Forest Technology Corporation
Inventor： Kwan-Jen Chu
CPC classification number: H02M3/33507 , H02M1/44 , H02M7/06 , H02M2001/0012 , H02M2001/007 , H02M2001/322
Abstract: A power supply apparatus is provided. The power supply apparatus includes a power conversion circuit, an AC safety capacitor and a control unit. An AC input voltage is received by an input side of the power converting circuit, and is converted to a DC output voltage. The AC safety capacitor is connected across the input side. The control unit controls the operation of the power converting circuit, where the control unit samples and holds a voltage between two terminals of the AC safety capacitor to obtain a holding voltage, and compares the holding voltage and the AC input voltage during each period of a clock signal, so as to decide to discharge electric energy stored by the AC safety capacitor according to a comparison result.
Abstract translation: 提供电源装置。 电源装置包括电力转换电路，交流安全电容器和控制单元。 交流输入电压由功率转换电路的输入侧接收，并被转换成直流输出电压。 交流安全电容器连接在输入端。 控制单元控制功率转换电路的操作，其中控制单元采样并保持AC安全电容器的两个端子之间的电压以获得保持电压，并且在每个周期期间比较保持电压和AC输入电压 时钟信号，以便根据比较结果决定放电由交流安全电容器存储的电能。
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