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    • 2. 发明申请
    • POWER SUPPLY WITH SINGLE STAGE CONVERTER FOR PERFORMING POWER FACTOR CORRECTION AND RESONANT CONVERSION
    • 具有单级转换器的电源,用于执行功率因数校正和谐波转换
    • US20120106206A1
    • 2012-05-03
    • US13017954
    • 2011-01-31
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • H02M3/335
    • H02M1/4258H02M3/3376H02M2001/0054Y02B70/126Y02B70/1433Y02B70/1491Y02P80/112
    • The invention discloses a power supply having a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performing resonant conversion to achieve zero-voltage switching or zero-current switching for power conversion. The inventive single stage converter includes a switching circuit, a resonant circuit, a power control circuit, and a square wave generator. The switching circuit includes at least one switch and the resonant circuit includes a LLC resonant tank. The power control circuit includes a proportional differential circuit such as a power amplifier configured in a negative feedback topology, and the square wave generator is configured to generate driving signals based on the frequency modulation control signal generated by the comparison of the sensed input current and a user-defined power level input, thereby allowing the square wave generator to regulate the switching operation of the switching circuit.
    • 本发明公开了一种具有单级转换器的电源,用于执行功率因数校正以减少输入电流中的高频谐波并执行谐振转换以实现用于功率转换的零电压开关或零电流开关。 本发明的单级转换器包括开关电路,谐振电路,功率控制电路和方波发生器。 开关电路包括至少一个开关,并且谐振电路包括LLC谐振回路。 功率控制电路包括诸如配置在负反馈拓扑中的功率放大器的比例差分电路,并且方波发生器被配置为基于通过感测的输入电流和a的比较产生的频率调制控制信号来产生驱动信号 用户定义的功率电平输入,从而允许方波发生器调节开关电路的开关操作。
    • 3. 发明授权
    • Power supply with single stage converter for performing power factor correction and resonant conversion
    • 用于执行功率因数校正和谐振转换的单级转换器的电源
    • US08649189B2
    • 2014-02-11
    • US13017954
    • 2011-01-31
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • H02M3/335
    • H02M1/4258H02M3/3376H02M2001/0054Y02B70/126Y02B70/1433Y02B70/1491Y02P80/112
    • A power supply has a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performs resonant conversion to achieve zero-voltage switching or zero-current switching for power conversion. The inventive single stage converter includes a switching circuit, a resonant circuit, a power control circuit, and a square wave generator. The switching circuit includes at least one switch and the resonant circuit includes a LLC resonant tank. The power control circuit includes a proportional differential circuit such as a power amplifier configured in a negative feedback topology, and the square wave generator is configured to generate driving signals based on the frequency modulation control signal generated by the comparison of the sensed input current and a user-defined power level input, thereby allowing the square wave generator to regulate the switching operation of the switching circuit.
    • 电源具有用于执行功率因数校正以降低输入电流中的高频谐波的单级转换器,并且执行谐振转换以实现用于功率转换的零电压开关或零电流开关。 本发明的单级转换器包括开关电路,谐振电路,功率控制电路和方波发生器。 开关电路包括至少一个开关,并且谐振电路包括LLC谐振回路。 功率控制电路包括诸如配置在负反馈拓扑中的功率放大器的比例差分电路,并且方波发生器被配置为基于通过感测的输入电流和a的比较产生的频率调制控制信号来产生驱动信号 用户定义的功率电平输入,从而允许方波发生器调节开关电路的开关操作。
    • 4. 发明授权
    • Resonant switching circuit for harmonic suppression of input current utilizing frequency modulation
    • 谐振抑制输入电流谐振开关电路利用频率调制
    • US08331113B2
    • 2012-12-11
    • US13017902
    • 2011-01-31
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • H02M3/335G05F5/00
    • H02M1/425Y02B70/126
    • The invention discloses a control circuit for an AC-DC converter. The control circuit includes a power control circuit for comparing an input current sensing signal generated by sensing an input current of the AC-DC converter and a power level control input and in response thereto generating a frequency modulation control signal, in which the frequency modulation control signal is used to control the output power of the AC-DC converter and suppress harmonics of the input current, and a square wave generator connected to the power control circuit for generating a driving signal used to drive the switch circuit of the AC-DC converter according to the frequency modulation control signal, in which the frequency of the driving signal is varied with the frequency modulation control signal, thereby suppressing harmonics of the input current and regulating the switching frequency the AC-DC converter, and regulating the output power of the AC-DC converter.
    • 本发明公开了一种用于AC-DC转换器的控制电路。 控制电路包括功率控制电路,用于比较通过感测AC-DC转换器的输入电流而产生的输入电流感测信号和功率电平控制输入,并响应于此生成频率调制控制信号 信号用于控制AC-DC转换器的输出功率并抑制输入电流的谐波,以及连接到功率控制电路的方波发生器,用于产生用于驱动AC-DC转换器的开关电路的驱动信号 根据频率调制控制信号,其中驱动信号的频率随着调频控制信号而变化,由此抑制输入电流的谐波并调节开关频率的AC-DC转换器,并调节输出功率 AC-DC转换器。
    • 6. 发明授权
    • AC-DC converter
    • AC-DC转换器
    • US08441811B2
    • 2013-05-14
    • US13019661
    • 2011-02-02
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • H02M3/335
    • H02M1/4208H02M1/4241H02M1/4258H02M3/335H02M3/33507H02M2001/0058H02M2001/342Y02B70/126Y02B70/1491
    • An AC-DC converter is disclosed. The AC-DC converter includes an OFF-time clamping circuit. The OFF time clamping circuit outputs a triggering signal when a main switch circuit of the AC-DC converter is switched from ON state to OFF state. When an input AC voltage is too small, and a terminal voltage at a first current-conducting terminal of the main switch circuit of the AC-DC converter is lower than a specific voltage such that a switching control circuit can not turn on the main switch circuit again, the switching control circuit can still turn on the main switch circuit again by the triggering signal. Therefore, the OFF time of the main switch circuit is clamped. The switching control circuit can control the switching operation of the main switch circuit.
    • 公开了一种AC-DC转换器。 AC-DC转换器包括OFF时间钳位电路。 当AC-DC转换器的主开关电路从ON状态切换到OFF状态时,OFF时间钳位电路输出触发信号。 当输入交流电压太小时,AC-DC转换器的主开关电路的第一导通端子的端子电压低于特定电压,使得开关控制电路不能接通主开关 再次,开关控制电路仍然可以通过触发信号再次导通主开关电路。 因此,主开关电路的OFF时间被钳位。 开关控制电路可以控制主开关电路的开关动作。
    • 8. 发明申请
    • AC-DC CONVERTER AND CONTROL CIRCUIT THEREOF
    • AC-DC转换器及其控制电路
    • US20120020119A1
    • 2012-01-26
    • US13017902
    • 2011-01-31
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • Pak-Chuen TangKwong-Ming ChingChung-Hei Poon
    • H02M3/335
    • H02M1/425Y02B70/126
    • The invention discloses a control circuit for an AC-DC converter. The control circuit includes a power control circuit for comparing an input current sensing signal generated by sensing an input current of the AC-DC converter and a power level control input and in response thereto generating a frequency modulation control signal, in which the frequency modulation control signal is used to control the output power of the AC-DC converter and suppress harmonics of the input current, and a square wave generator connected to the power control circuit for generating a driving signal used to drive the switch circuit of the AC-DC converter according to the frequency modulation control signal, in which the frequency of the driving signal is varied with the frequency modulation control signal, thereby suppressing harmonics of the input current and regulating the switching frequency the AC-DC converter, and regulating the output power of the AC-DC converter.
    • 本发明公开了一种用于AC-DC转换器的控制电路。 控制电路包括功率控制电路,用于比较通过感测AC-DC转换器的输入电流而产生的输入电流感测信号和功率电平控制输入,并响应于此生成频率调制控制信号 信号用于控制AC-DC转换器的输出功率并抑制输入电流的谐波,以及连接到功率控制电路的方波发生器,用于产生用于驱动AC-DC转换器的开关电路的驱动信号 根据频率调制控制信号,其中驱动信号的频率随着调频控制信号而变化,由此抑制输入电流的谐波并调节开关频率的AC-DC转换器,并调节输出功率 AC-DC转换器。