公开(公告)号：US08406015B2

公开(公告)日：2013-03-26

申请号：US12453446

申请日：2009-05-12

申请人： Tzu-Chen Lin ,  Pei-Lun Huang

发明人： Tzu-Chen Lin ,  Pei-Lun Huang

IPC分类号： H02M3/335 ,  G05F1/00

CPC分类号： H02M3/33507 ,  H02M3/335 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control circuit and method are provided for a flyback converter converting an input voltage to an output voltage, to compensate for an entry point of a burst mode of the flyback converter, so that the entry point is not affected by the input voltage, and audible noise resulted from a higher input voltage is reduced without impacting the light load efficiency of the flyback converter.

摘要翻译： 提供了一种控制电路和方法，用于将反相转换器将输入电压转换为输出电压，以补偿反激式转换器的突发模式的入口点，使得入口点不受输入电压的影响，并且可听见 由于较高的输入电压导致的噪声降低，而不会影响反激式转换器的轻负载效率。

公开(公告)号：US20110018590A1

公开(公告)日：2011-01-27

申请号：US12838988

申请日：2010-07-19

申请人： LIANG-PIN TAI ,  TZU-CHEN LIN ,  CHENG-HSUAN FAN

发明人： LIANG-PIN TAI ,  TZU-CHEN LIN ,  CHENG-HSUAN FAN

IPC分类号： H02M11/00

CPC分类号： H02M3/33523

摘要： A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.

摘要翻译： 用于隔离电力转换器的反馈电路包括光耦合器和反极性调节器。 光耦合器提供与隔离功率转换器的输出电压相关的电流。 当隔离电源转换器进入轻负载时，输出电压升高，反极性调节器降低电流以降低功耗，从而提高隔离电源转换器的轻负载效率。

公开(公告)号：US20090279214A1

公开(公告)日：2009-11-12

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： H02H9/02

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。

公开(公告)号：US20080279324A1

公开(公告)日：2008-11-13

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： H03D3/24

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，使得由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。

公开(公告)号：US20080116870A1

公开(公告)日：2008-05-22

申请号：US11979390

申请日：2007-11-02

申请人： Tzu-Chen Lin

发明人： Tzu-Chen Lin

IPC分类号： G05F1/00

CPC分类号： H02M3/33523 ,  G01R19/04

摘要： A valley detecting circuit and method are provided for a voltage drop across a switching device, which detect a voltage drop across the switching device to produce a first voltage proportional to the voltage drop across the switching device, clamp the first voltage to produce a second voltage, level shift the second voltage to produce a third voltage, and compare the second voltage with the third voltage to determine a valley for the first voltage.

摘要翻译： 提供谷底检测电路和方法，用于跨越开关器件的电压降，其检测开关器件两端的电压降以产生与开关器件两端的电压降成比例的第一电压，钳位第一电压以产生第二电压 ，电平移位第二电压以产生第三电压，并且将第二电压与第三电压进行比较以确定第一电压的谷值。

公开(公告)号：US09627984B2

公开(公告)日：2017-04-18

申请号：US14676268

申请日：2015-04-01

申请人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Chih-Wei Chi

发明人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Chih-Wei Chi

IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M7/527 ,  H02M1/44 ,  H02M1/32

CPC分类号： H02M3/33523 ,  H02M1/44 ,  H02M3/33507 ,  H02M7/527 ,  H02M2001/007 ,  H02M2001/322

摘要： The present invention provides an isolated power supply circuit with a programmable function and a control method thereof. The isolated power supply circuit includes: a transformer circuit, a power switch circuit, a control circuit, and a discharge circuit. The control circuit generates an operation signal and a bleeding signal according to a setting signal. The discharge circuit is coupled to an output node, for generating a discharging current. When the programmable output voltage at the output node switches between different predetermined levels, in a transition period, the bleeding signal adjusts the discharging current to discharge the output node, such that the transition period is shortened.

公开(公告)号：US20150311778A1

公开(公告)日：2015-10-29

申请号：US14691446

申请日：2015-04-20

申请人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Li-Di Luo

发明人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Li-Di Luo

IPC分类号： H02M1/14 ,  H02M1/00 ,  H02M3/335

CPC分类号： H02M1/143 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

摘要： The present invention provides a flyback power converter and a control circuit and a control method thereof. The flyback power converter includes: a power stage circuit, a voltage sense circuit, a current sense circuit, and a control circuit. When the flyback power converter operates in a quasi-resonant mode, the control circuit determines a time point of turning OFF a power switch in the power stage circuit according to a current sense signal, a pulse width modulation (PWM) frequency of a PWM signal, and a predetermined threshold, wherein the control circuit adaptively adjusts an ON period of the power switch, or adaptively adjusts an operation bandwidth or an amplifier gain of an error amplifier circuit in a feedback control loop according to the PWM frequency to mitigate an output voltage ripple.

摘要翻译： 本发明提供一种反激式功率转换器及其控制电路及其控制方法。 反激式功率转换器包括：功率级电路，电压检测电路，电流检测电路和控制电路。 当回扫电力转换器工作在准谐振模式时，控制电路根据电流检测信号，PWM信号的脉冲宽度调制（PWM）频率确定关断功率级电路中的电源开关的时间点 和预定阈值，其中控制电路自适应地调整功率开关的导通周期，或者根据PWM频率自适应地调整反馈控制回路中的误差放大器电路的操作带宽或放大器增益，以减轻输出电压 波纹。

公开(公告)号：US20150288288A1

公开(公告)日：2015-10-08

申请号：US14676268

申请日：2015-04-01

申请人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Chih-Wei Chi

发明人： Kuang-Fu Chang ,  Tzu-Chen Lin ,  Chih-Wei Chi

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M1/44 ,  H02M3/33507 ,  H02M7/527 ,  H02M2001/007 ,  H02M2001/322

摘要： The present invention provides an isolated power supply circuit with a programmable function and a control method thereof. The isolated power supply circuit includes: a transformer circuit, a power switch circuit, a control circuit, and a discharge circuit. The control circuit generates an operation signal and a bleeding signal according to a setting signal. The discharge circuit is coupled to an output node, for generating a discharging current. When the programmable output voltage at the output node switches between different predetermined levels, in a transition period, the bleeding signal adjusts the discharging current to discharge the output node, such that the transition period is shortened.

摘要翻译： 本发明提供一种具有可编程功能的隔离电源电路及其控制方法。 隔离电源电路包括：变压器电路，电源开关电路，控制电路和放电电路。 控制电路根据设定信号产生运转信号和出血信号。 放电电路耦合到输出节点，用于产生放电电流。 当输出节点的可编程输出电压在不同的预定电平之间切换时，在过渡期间，出血信号调节放电电流以对输出节点放电，从而缩短过渡期。

公开(公告)号：US08582324B2

公开(公告)日：2013-11-12

申请号：US13361412

申请日：2012-01-30

申请人： Kun-Yu Lin ,  Tzu-Chen Lin ,  Pei-Lun Huang

发明人： Kun-Yu Lin ,  Tzu-Chen Lin ,  Pei-Lun Huang

IPC分类号： H02M1/12 ,  H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/14 ,  H02M2001/0025

摘要： A pulse width modulation controller and method for output ripple reduction of a jittering frequency switching power supply detect the current of a power switch of the switching power supply to generate a current sense signal, and adjust the gain or the level of the current sense signal according to the switching frequency of the power switch to adjust the on time of the power switch, to reduce the output ripple of the switching power supply caused by the jittering frequency of the switching power supply.

摘要翻译： 用于抖动频率开关电源的输出纹波降低的脉宽调制控制器和方法检测开关电源的电源开关的电流以产生电流检测信号，并根据电流检测信号的电平来调整电流检测信号的增益或电平 到开关频率的电源开关调节电源开关的导通时间，降低开关电源的输出纹波，由开关电源的抖动频率引起。

公开(公告)号：US08503196B2

公开(公告)日：2013-08-06

申请号：US12838988

申请日：2010-07-19

申请人： Liang-Pin Tai ,  Tzu-Chen Lin ,  Cheng-Hsuan Fan

发明人： Liang-Pin Tai ,  Tzu-Chen Lin ,  Cheng-Hsuan Fan

IPC分类号： H02M3/335 ,  H02M1/36

CPC分类号： H02M3/33523

摘要： A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.

摘要翻译： 用于隔离电力转换器的反馈电路包括光耦合器和反极性调节器。 光耦合器提供与隔离功率转换器的输出电压相关的电流。 当隔离电源转换器进入轻负载时，输出电压升高，反极性调节器降低电流以降低功耗，从而提高隔离电源转换器的轻负载效率。