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公开(公告)号：US07511472B1
公开(公告)日：2009-03-31
申请号：US11969678
申请日：2008-01-04
申请人： Chun-Hua Xia , Li-Hong Huang , Shih-Hao Liu
发明人： Chun-Hua Xia , Li-Hong Huang , Shih-Hao Liu
CPC分类号： G01R21/133 , H02M3/156 , H02M2001/0009
摘要： A power measuring apparatus including a voltage transformer, a voltage-current measuring circuit, and an operation unit is provided. The voltage transformer converts an input voltage signal into an output voltage signal. The voltage-current measuring circuit includes an inductor, a first resistor, a first capacitor and a second capacitor. A first end of the first inductor herein receives the output voltage signal and a second end thereof generates a voltage feedback signal. The operation unit performs an operation on the voltage feedback signal and a terminal current signal between the first terminal and the second terminal of the first capacitor so as to calculate a power signal. In this way, the accuracy of thermal test is effectively increased by the presented invention.
摘要翻译： 提供一种包括电压互感器，电压电流测量电路和操作单元的功率测量装置。 电压互感器将输入电压信号转换为输出电压信号。 电压电流测量电路包括电感器，第一电阻器，第一电容器和第二电容器。 第一电感器的第一端接收输出电压信号，其第二端产生电压反馈信号。 操作单元对第一电容器的第一端子和第二端子之间的电压反馈信号和端子电流信号进行运算，以计算功率信号。 通过这种方式，通过本发明有效地提高了热测试的精度。
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公开(公告)号：US08035360B2
公开(公告)日：2011-10-11
申请号：US12416618
申请日：2009-04-01
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
IPC分类号： G05F1/59
CPC分类号： H02M1/36 , H02M3/156 , Y10S323/901
摘要： A power converting device including a pulse width modulation circuit, a switch unit, a power output unit and a voltage start unit is provided. The pulse width modulation circuit increases a start voltage in a soft start mode and is operated under the start voltage to generate a pulse width modulation signal. The switch unit is for receiving an input voltage, and forming a charge path and a discharge path alternately according to the pulse width modulation signal. The power output unit converts the input voltage to a core voltage in accordance with the charge path and the discharge path. The voltage start unit is for detecting the start voltage, and for transmitting a control signal to interrupt the formation of the discharge path when the start voltage is smaller than the core voltage.
摘要翻译： 提供了包括脉宽调制电路，开关单元，电力输出单元和电压启动单元的电力转换装置。 脉宽调制电路在软启动模式下增加启动电压，并在启动电压下工作，产生脉宽调制信号。 开关单元用于接收输入电压，并且根据脉冲宽度调制信号交替地形成充电路径和放电路径。 功率输出单元根据充电路径和放电路径将输入电压转换为核心电压。 电压启动单元用于检测启动电压，并且用于在起动电压小于铁芯电压时发送用于中断形成放电路径的控制信号。
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公开(公告)号：US07795854B2
公开(公告)日：2010-09-14
申请号：US12015917
申请日：2008-01-17
申请人： Chun-Hua Xia , Xiao-Ru Wu , Li Zeng , Da-Wei Hu , Shih-Hao Liu
发明人： Chun-Hua Xia , Xiao-Ru Wu , Li Zeng , Da-Wei Hu , Shih-Hao Liu
IPC分类号： G05F1/40
CPC分类号： H02M3/156
摘要： A voltage regulating circuit including an error signal generator, a comparator, a switch unit, a low-pass filter and a modulating unit is provided. The error signal generator respectively receives a reference voltage signal and a feedback signal, and generates an error signal. The comparator respectively receives the error signal and a comparing signal, and generates a pulse width modulation signal. The switch unit regulates an input voltage signal to generate an output voltage signal according the pulse width modulation signal. The low-pass filter filters out the high frequency of the output signal and produces the feedback signal. The modulating unit is coupled to the low-pass filter and the error signal generator for regulating a transient voltage of the output voltage signal.
摘要翻译： 提供了包括误差信号发生器，比较器，开关单元，低通滤波器和调制单元的电压调节电路。 误差信号发生器分别接收参考电压信号和反馈信号，并产生误差信号。 比较器分别接收误差信号和比较信号，并产生脉宽调制信号。 开关单元调节输入电压信号以根据脉宽调制信号产生输出电压信号。 低通滤波器滤除输出信号的高频，并产生反馈信号。 调制单元耦合到低通滤波器和误差信号发生器，用于调节输出电压信号的瞬态电压。
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公开(公告)号：US20090231886A1
公开(公告)日：2009-09-17
申请号：US12101751
申请日：2008-04-11
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
CPC分类号： H02M3/33507 , H02M2001/0006
摘要： A power supply and a bootstrap circuit thereof are provided. The bootstrap circuit includes a transistor, a first capacitor, a first impedance and a regulator circuit. The collector and the emitter of the transistor respectively serve as the input terminal and the output terminal of the bootstrap circuit. A terminal of the first capacitor is coupled to the collector of the transistor. A terminal of the first impedance is coupled to another terminal of the first capacitor. The regulator circuit is coupled to another terminal of the first impedance and the base of the transistor for clamping the voltage of the above-mentioned base at a predetermined voltage level.
摘要翻译： 提供电源及其自举电路。 自举电路包括晶体管，第一电容器，第一阻抗和调节器电路。 晶体管的集电极和发射极分别用作自举电路的输入端和输出端。 第一电容器的端子耦合到晶体管的集电极。 第一阻抗的端子耦合到第一电容器的另一个端子。 调节器电路耦合到第一阻抗的另一个端子和晶体管的基极，用于将上述基极的电压钳位在预定电压电平。
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公开(公告)号：US20090230937A1
公开(公告)日：2009-09-17
申请号：US12110892
申请日：2008-04-28
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
IPC分类号： G05F1/46
CPC分类号： G05F1/70 , H02M1/4225 , Y02B70/126
摘要： A power factor correction circuit including a boost converter, a first capacitor, a first resistor, and a boost control unit is provided. The boost control unit includes a signal generator and a frequency controller. The boost converter transforms a rectified voltage to a correction voltage according to a pulse width modulation (PWM) signal. The first capacitor and the first resistor are coupled between an input terminal and a ground terminal of the boost converter. The boost control unit is adapted to generate the PWM signal, and adjust a duty cycle and a frequency of the PWM signal according to a current flowing through the first resistance, the rectified voltage and the correction voltage. Wherein, the signal generator is adapted to generate a ramp signal and adjust a slope of the ramp signal according to a charging current. The frequency controller adjusts the charging current according to the rectified voltage.
摘要翻译： 提供了包括升压转换器，第一电容器，第一电阻器和升压控制单元的功率因数校正电路。 升压控制单元包括信号发生器和频率控制器。 升压转换器根据脉宽调制（PWM）信号将整流电压转换为校正电压。 第一电容器和第一电阻器耦合在升压转换器的输入端子和接地端子之间。 升压控制单元适于产生PWM信号，并且根据流过第一电阻，整流电压和校正电压的电流来调整PWM信号的占空比和频率。 其中，信号发生器适于产生斜坡信号，并根据充电电流调整斜坡信号的斜率。 频率控制器根据整流电压调节充电电流。
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公开(公告)号：US07772820B2
公开(公告)日：2010-08-10
申请号：US11961138
申请日：2007-12-20
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
IPC分类号： G05F1/56
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A feedback and comparison apparatus applicable to a DC-DC voltage converter is provided. The feedback and comparison apparatus includes a comparator and a voltage feedback circuit. The voltage feedback circuit includes a first voltage dividing component and a second voltage dividing component. The comparator compares a feedback voltage with a first reference voltage, and outputs a control signal to the DC-DC voltage converter according to the comparing result. One end of the first voltage dividing component is coupled to an output voltage output by the DC-DC voltage converter and the other end of the first voltage dividing component is coupled to one end of the second voltage dividing component, for providing the feedback voltage. The other end of the second voltage dividing component is coupled to a second reference voltage. The present invention is applicable to a situation that the output voltage is smaller than the reference voltage.
摘要翻译： 提供了适用于DC-DC电压转换器的反馈和比较装置。 反馈和比较装置包括比较器和电压反馈电路。 电压反馈电路包括第一分压部件和第二分压部件。 比较器将反馈电压与第一参考电压进行比较，并根据比较结果向DC-DC电压转换器输出控制信号。 第一分压部件的一端与由DC-DC电压转换器输出的输出电压耦合，第一分压部件的另一端耦合到第二分压部件的一端，用于提供反馈电压。 第二分压部件的另一端耦合到第二参考电压。 本发明适用于输出电压小于参考电压的情况。
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公开(公告)号：US20090153112A1
公开(公告)日：2009-06-18
申请号：US12021936
申请日：2008-01-29
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
IPC分类号： G05F1/10
CPC分类号： G05F1/56
摘要： A linear step-down voltage regulator is provided. The linear step-down voltage regulator is grounded with a ground terminal. The ground terminal is electrically connected to a digital ground terminal of a switching circuit. The linear step-down voltage regulator includes a pass element, a voltage dividing resistor, an error amplifier, a metal oxide semiconductor (MOS) transistor, and a low-pass filter. The employment of the low-pass filter effectively adjusts and restricts the switching noise to pass therethrough, so as to decrease the output of the switching noise and thus eliminating the problems due to the noise.
摘要翻译： 提供了线性降压型稳压器。 线性降压型稳压器用接地端子接地。 接地端子与开关电路的数字接地端子电连接。 线性降压电压调节器包括通过元件，分压电阻器，误差放大器，金属氧化物半导体（MOS）晶体管和低通滤波器。 使用低通滤波器有效地调节和限制开关噪声通过，从而降低开关噪声的输出，从而消除由于噪声引起的问题。
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公开(公告)号：US20090146627A1
公开(公告)日：2009-06-11
申请号：US12015917
申请日：2008-01-17
申请人： Chun-Hua Xia , Xiao-Ru Wu , Li Zeng , Da-Wei Hu , Shih-Hao Liu
发明人： Chun-Hua Xia , Xiao-Ru Wu , Li Zeng , Da-Wei Hu , Shih-Hao Liu
IPC分类号： G05F1/00
CPC分类号： H02M3/156
摘要： A voltage regulating circuit including an error signal generator, a comparator, a switch unit, a low-pass filter and a modulating unit is provided. The error signal generator respectively receives a reference voltage signal and a feedback signal, and generates an error signal. The comparator respectively receives the error signal and a comparing signal, and generates a pulse width modulation signal. The switch unit regulates an input voltage signal to generate an output voltage signal according the pulse width modulation signal. The low-pass filter filters out the high frequency of the output signal and produces the feedback signal. The modulating unit is coupled to the low-pass filter and the error signal generator for regulating a transient voltage of the output voltage signal.
摘要翻译： 提供了包括误差信号发生器，比较器，开关单元，低通滤波器和调制单元的电压调节电路。 误差信号发生器分别接收参考电压信号和反馈信号，并产生误差信号。 比较器分别接收误差信号和比较信号，并产生脉宽调制信号。 开关单元调节输入电压信号以根据脉宽调制信号产生输出电压信号。 低通滤波器滤除输出信号的高频，并产生反馈信号。 调制单元耦合到低通滤波器和误差信号发生器，用于调节输出电压信号的瞬态电压。
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公开(公告)号：US20100207593A1
公开(公告)日：2010-08-19
申请号：US12416618
申请日：2009-04-01
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
IPC分类号： G05F1/10
CPC分类号： H02M1/36 , H02M3/156 , Y10S323/901
摘要： A power converting device including a pulse width modulation circuit, a switch unit, a power output unit and a voltage start unit is provided. The pulse width modulation circuit increases a start voltage in a soft start mode and is operated under the start voltage to generate a pulse width modulation signal. The switch unit is for receiving an input voltage, and forming a charge path and a discharge path alternately according to the pulse width modulation signal. The power output unit converts the input voltage to a core voltage in accordance with the charge path and the discharge path. The voltage start unit is for detecting the start voltage, and for transmitting a control signal to interrupt the formation of the discharge path when the start voltage is smaller than the core voltage.
摘要翻译： 提供了包括脉宽调制电路，开关单元，电力输出单元和电压启动单元的电力转换装置。 脉宽调制电路在软启动模式下增加启动电压，并在启动电压下工作，产生脉宽调制信号。 开关单元用于接收输入电压，并且根据脉冲宽度调制信号交替地形成充电路径和放电路径。 功率输出单元根据充电路径和放电路径将输入电压转换为核心电压。 电压启动单元用于检测启动电压，并且用于在起动电压小于铁芯电压时发送用于中断形成放电路径的控制信号。
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公开(公告)号：US07728570B2
公开(公告)日：2010-06-01
申请号：US12110892
申请日：2008-04-28
申请人： Chun-Hua Xia , Shih-Hao Liu
发明人： Chun-Hua Xia , Shih-Hao Liu
CPC分类号： G05F1/70 , H02M1/4225 , Y02B70/126
摘要： A power factor correction circuit including a boost converter, a first capacitor, a first resistor, and a boost control unit is provided. The boost control unit includes a signal generator and a frequency controller. The boost converter transforms a rectified voltage to a correction voltage according to a pulse width modulation (PWM) signal. The first capacitor and the first resistor are coupled between an input terminal and a ground terminal of the boost converter. The boost control unit is adapted to generate the PWM signal, and adjust a duty cycle and a frequency of the PWM signal according to a current flowing through the first resistance, the rectified voltage and the correction voltage. Wherein, the signal generator is adapted to generate a ramp signal and adjust a slope of the ramp signal according to a charging current. The frequency controller adjusts the charging current according to the rectified voltage.
摘要翻译： 提供了包括升压转换器，第一电容器，第一电阻器和升压控制单元的功率因数校正电路。 升压控制单元包括信号发生器和频率控制器。 升压转换器根据脉宽调制（PWM）信号将整流电压转换为校正电压。 第一电容器和第一电阻器耦合在升压转换器的输入端子和接地端子之间。 升压控制单元适于产生PWM信号，并且根据流过第一电阻，整流电压和校正电压的电流来调整PWM信号的占空比和频率。 其中，信号发生器适于产生斜坡信号，并根据充电电流调整斜坡信号的斜率。 频率控制器根据整流电压调节充电电流。
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