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21. 发明授权

US07701305B2 Frequency jittering control for varying the switching frequency of a power supply 有权
标题翻译：用于改变电源开关频率的频率抖动控制
公开(公告)号：US07701305B2
公开(公告)日：2010-04-20
申请号：US11822575
申请日：2007-07-09
申请人： Tzu-Chen Lin , Pei-Lun Huang , Hung-Che Chou
发明人： Tzu-Chen Lin , Pei-Lun Huang , Hung-Che Chou
IPC分类号： H03K3/02 , H03K7/00
CPC分类号： H03K7/06 , H02M1/44 , H02M3/156 , H03K3/84 , H04B15/005
摘要： A frequency jittering circuit modulates a hysteretic band of an oscillator such that the clock generated by the oscillator has a jitter frequency, and thus a switching mode power supply operative on the clock will have a jittering switching frequency.
摘要翻译：频率抖动电路调制振荡器的滞后频带，使得振荡器产生的时钟具有抖动频率，因此在时钟上工作的开关模式电源将具有抖动的开关频率。

22. 发明申请

US20090302827A1 Sensing circuit and method for a flyback converter 有权
标题翻译：反激式转换器的感应电路和方法
公开(公告)号：US20090302827A1
公开(公告)日：2009-12-10
申请号：US12457128
申请日：2009-06-02
申请人： Pei-Lun Huang , Kuang-Ming Chang
发明人： Pei-Lun Huang , Kuang-Ming Chang
IPC分类号： G01R19/10
CPC分类号： H02M3/33507 , G01R19/0092 , H02M2001/0009
摘要： A flyback converter includes a transformer to convert an input voltage into an output voltage, a control circuit senses a primary current of the transformer to generate a current sense signal, and a sensing circuit is configured to sense a variation of the current sense signal between two time points for extracting the input voltage information therefrom.
摘要翻译：反激转换器包括将输入电压转换为输出电压的变压器，控制电路感测变压器的初级电流以产生电流感测信号，并且感测电路被配置为感测两个电流感测信号之间的电流感测信号的变化从其中提取输入电压信息的时间点。

23. 发明申请

US20090194512A1 Multi-function machine 审中-公开
标题翻译：多功能机
公开(公告)号：US20090194512A1
公开(公告)日：2009-08-06
申请号：US12155699
申请日：2008-06-09
申请人： Chia-Lung Kuo , Pei-Lun Huang , Keng-Hui Chu , Shih-Min Chen
发明人： Chia-Lung Kuo , Pei-Lun Huang , Keng-Hui Chu , Shih-Min Chen
IPC分类号： B23K26/04 , B23H1/00
CPC分类号： B23H5/04 , B23H1/00 , B23H7/38 , B23H11/00
摘要： A multi-function machine includes an electrode having a passage, a power supply device electrically connected with the two opposite terminals thereof to the electrode and the workpiece to be processed, a feeder for selectively feeding a gas or fluid to the passage of the electrode, a first laser beam and a second laser beam respectively projected through the passage of the electrode onto the workpiece, and a detection control device for receiving the reflective light wave of the second laser beam reflected by the workpiece.
摘要翻译：多功能机器包括具有通道的电极，与其两个相对的端子电连接到电极和待处理的工件的电源装置，用于选择性地将气体或流体供给到电极的通道的进料器，分别通过电极通过工件的第一激光束和第二激光束，以及用于接收被工件反射的第二激光束的反射光波的检测控制装置。

24. 发明授权

US07502235B2 Output power limit for a switching mode power converter by a current limit signal having a multi-slope waveform 失效
标题翻译：通过具有多斜率波形的电流限制信号对开关模式功率转换器的输出功率限制
公开(公告)号：US07502235B2
公开(公告)日：2009-03-10
申请号：US11892181
申请日：2007-08-21
申请人： Pei-Lun Huang , Kuang-Ming Chang
发明人： Pei-Lun Huang , Kuang-Ming Chang
IPC分类号： H02M3/335 , H02M1/12
CPC分类号： H02M3/33507 , H02M1/32
摘要： A current limit signal having a multi-slope waveform is provided for a power converter that has a power switch switched to convert an input voltage to an output voltage, for output power control more preciously. The current flowing through the power switch has a maximum value being a function of a duty cycle of the power switch when the power converter operates at a constant output power condition. The current limit signal is generated according to the function, and is compared with a sensing signal produced from the current flowing through the power switch, so as to turn off the power switch if the sensing signal is not lower than the current limit signal.
摘要翻译：提供具有多斜率波形的电流限制信号用于功率转换器，该功率转换器具有切换电源开关以将输入电压转换为输出电压，以便更加珍贵地输出功率控制。当功率转换器在恒定的输出功率条件下工作时，流过电源开关的电流具有作为功率开关占空比的函数的最大值。根据功能产生电流限制信号，并将其与从流过电源开关的电流产生的感测信号进行比较，以便在感测信号不低于电流限制信号时关闭电源开关。

25. 发明申请

US20080310192A1 Output power limit for a switching mode power converter by a current limit signal having a multi-slope waveform 失效
标题翻译：通过具有多斜率波形的电流限制信号对开关模式功率转换器的输出功率限制
公开(公告)号：US20080310192A1
公开(公告)日：2008-12-18
申请号：US11892181
申请日：2007-08-21
申请人： Pei-Lun Huang , Kuang-Ming Chang
发明人： Pei-Lun Huang , Kuang-Ming Chang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/32
摘要： A current limit signal having a multi-slope waveform is provided for a power converter that has a power switch switched to convert an input voltage to an output voltage, for output power control more preciously. The current flowing through the power switch has a maximum value being a function of a duty cycle of the power switch when the power converter operates at a constant output power condition. The current limit signal is generated according to the function, and is compared with a sensing signal produced from the current flowing through the power switch, so as to turn off the power switch if the sensing signal is not lower than the current limit signal.
摘要翻译：提供具有多斜率波形的电流限制信号用于功率转换器，该功率转换器具有切换电源开关以将输入电压转换为输出电压，以便更加珍贵地输出功率控制。当功率转换器在恒定的输出功率条件下工作时，流过电源开关的电流具有作为功率开关占空比的函数的最大值。根据功能产生电流限制信号，并将其与从流过电源开关的电流产生的感测信号进行比较，以便在感测信号不低于电流限制信号时关闭电源开关。

26. 发明授权

US08824172B2 Apparatus and method for standby power reduction of a flyback power converter 有权
标题翻译：反激式功率转换器的待机功率降低的装置和方法
公开(公告)号：US08824172B2
公开(公告)日：2014-09-02
申请号：US12852628
申请日：2010-08-09
申请人： Sheng-Hua Chen , Tzu-Chen Lin , Pei-Lun Huang
发明人： Sheng-Hua Chen , Tzu-Chen Lin , Pei-Lun Huang
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： An apparatus and method for a flyback power converter reduce the standby output voltage of the flyback power converter by switching the reference voltage provided by a shunt regulator of the flyback power converter or the ratio of voltage divider resistors of the shunt regulator, to reduce the standby power consumption by an output feedback circuit of the flyback power converter, the shunt regulator, and the voltage divider resistors, and thereby improve the power loss of the flyback power converter in standby mode.
摘要翻译：用于回扫功率转换器的装置和方法通过切换由回扫功率转换器的并联调节器提供的参考电压或分流调节器的分压电阻器的比例来减小反激式功率转换器的备用输出电压，以减少待机反激式功率转换器的输出反馈电路，分流调节器和分压电阻器的功耗，从而提高回扫功率转换器在待机模式下的功率损耗。

27. 发明授权

US08472214B2 Control circuit and method for efficient flyback power converter under light load 有权
标题翻译：轻载下有效反激式电力转换器的控制电路及方法
公开(公告)号：US08472214B2
公开(公告)日：2013-06-25
申请号：US12500019
申请日：2009-07-09
申请人： Pei-Lun Huang , Yu-Ming Chen , Tzu-Chen Lin
发明人： Pei-Lun Huang , Yu-Ming Chen , Tzu-Chen Lin
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M2001/0022
摘要： A flyback power converter includes a power switch connected to a primary side of a transformer, and a sensing signal is provided for a control circuit to switch the power switch so as for the transformer to convert an input voltage into an output voltage. The sensing signal is a function of the input voltage, and the control circuit extracts a variation of the sensing signal during a preset time period. The variation of the sensing signal is used to prevent the output ripple and the green mode entry point of the flyback power converter from varying with the input voltage.
摘要翻译：反激式功率转换器包括连接到变压器的初级侧的电源开关，并且为控制电路提供感测信号以切换电源开关，以使变压器将输入电压转换为输出电压。感测信号是输入电压的函数，并且控制电路在预设时间段内提取感测信号的变化。感测信号的变化用于防止反激式功率转换器的输出纹波和绿色模式入口点随输入电压而变化。

28. 发明授权

US08203811B2 Protection apparatus and method for a power converter 有权
标题翻译：电源转换器的保护装置和方法
公开(公告)号：US08203811B2
公开(公告)日：2012-06-19
申请号：US12437934
申请日：2009-05-08
申请人： Tzu-Chen Lin , Pei-Lun Huang
发明人： Tzu-Chen Lin , Pei-Lun Huang
IPC分类号： H02H7/10
CPC分类号： H02M1/32
摘要： A power converter uses a PWM controller to provide a driver output to modulate the duty of the power converter. A protection apparatus and method compare a current sense input of the PWM controller with a reference voltage to assert a signal representing failure, count the number of cycles where the signal representing failure is asserted, and reset an enable signal to inhibit the driver output if the signal representing failure is asserted in several cycles.
摘要翻译：电源转换器使用PWM控制器提供驱动器输出来调制功率转换器的占空比。一种保护装置和方法，将PWM控制器的电流检测输入与参考电压进行比较，以断言表示故障的信号，计数表示故障的信号的周期数，并复位使能信号以禁止驱动器输出，如果表示故障的信号在几个周期内被断言。

29. 发明申请

US20120013367A1 Power stage control circuit 有权
标题翻译：功率级控制电路
公开(公告)号：US20120013367A1
公开(公告)日：2012-01-19
申请号：US12932617
申请日：2011-03-01
申请人： Yu-Chang Chen , Pei-Lun Huang , Li-Di Lo
发明人： Yu-Chang Chen , Pei-Lun Huang , Li-Di Lo
IPC分类号： H03K5/153
CPC分类号： H02H7/1213 , H02H3/24
摘要： The present invention discloses a power stage control circuit including: a driver circuit for controlling a power stage according to an error amplified signal; an error amplifier circuit for comparing a feedback voltage at a feedback terminal with a reference signal to generate the error amplified signal; a current generator circuit coupled to the feedback terminal for generating a fault detection current flowing to the feedback terminal; and a feedback terminal short detection circuit for generating a fault signal to stop the operation of the power stage when the feedback voltage is smaller than a short-circuit threshold voltage or when the fault detection current is larger than a short-circuit threshold current.
摘要翻译：本发明公开了一种功率级控制电路，包括：驱动电路，用于根据误差放大信号控制功率级; 误差放大器电路，用于将反馈端的反馈电压与参考信号进行比较，以产生误差放大信号; 耦合到反馈端的电流发生器电路，用于产生流向反馈端的故障检测电流; 以及反馈端短路检测电路，用于当反馈电压小于短路阈值电压时或者当故障检测电流大于短路阈值电流时，产生故障信号以停止功率级的运行。

30. 发明授权

US08031493B2 Method and apparatus for improving the light load efficiency of a switching mode converter 有权
标题翻译：用于提高开关模式转换器的轻负载效率的方法和装置
公开(公告)号：US08031493B2
公开(公告)日：2011-10-04
申请号：US12155771
申请日：2008-06-10
申请人： Pei-Lun Huang , Liang-Pin Tai
发明人： Pei-Lun Huang , Liang-Pin Tai
IPC分类号： H02M3/335
CPC分类号： H02M3/33507
摘要： A method and apparatus are provided for a switching mode converter to improve the light load efficiency thereof. The converter is thus operated with three modes by monitoring a feedback signal and a supply voltage. When the feedback signal indicates that loading gets light enough, the converter is switched from the first mode to the second mode, and during the second mode some cycles are skipped. If loading is too light, the converter is switched from the second mode to the third mode, and during the third mode more cycles will be skipped.
摘要翻译：提供了一种用于开关模式转换器以提高其轻负载效率的方法和装置。因此，通过监视反馈信号和电源电压，转换器通过三种模式运行。当反馈信号指示负载变得足够亮时，转换器从第一模式切换到第二模式，并且在第二模式期间，跳过一些周期。如果负载太轻，则转换器从第二模式切换到第三模式，而在第三模式期间，将跳过更多的周期。

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