公开(公告)号：US08907648B2

公开(公告)日：2014-12-09

申请号：US13478015

申请日：2012-05-22

申请人： Jyun-Che Ho ,  Chien-Fu Tang ,  Isaac Y. Chen ,  Shao-Hung Lu ,  Tzu-Chen Lin

发明人： Jyun-Che Ho ,  Chien-Fu Tang ,  Isaac Y. Chen ,  Shao-Hung Lu ,  Tzu-Chen Lin

IPC分类号： G05F1/00 ,  H05B33/08

CPC分类号： H05B33/0818

摘要： The present invention discloses a power factor correction circuit, a control circuit therefor and a method for driving a power factor correction circuit. The power factor correction circuit receives rectified power obtained by rectifying AC power, and corrects the power factor thereof. The power factor correction circuit includes an inductor, and it generates a reference signal as a limit for the inductor current. The reference signal is proportional to Comp/Vin, wherein Comp is a signal relating to a feedback signal, and Vin is a voltage signal relating to the AC power or the rectified power.

摘要翻译： 本发明公开了一种功率因数校正电路及其控制电路及驱动功率因数校正电路的方法。 功率因数校正电路接收通过整流交流电源而得到的整流功率，校正其功率因数。 功率因数校正电路包括电感器，并产生参考信号作为电感电流的限制。 参考信号与Comp / Vin成比例，其中Comp是与反馈信号相关的信号，Vin是与AC电力或整流功率有关的电压信号。

公开(公告)号：US08724349B2

公开(公告)日：2014-05-13

申请号：US13173417

申请日：2011-06-30

申请人： Chien-Fu Tang ,  Isaac Y. Chen ,  Liang-Pin Tai

发明人： Chien-Fu Tang ,  Isaac Y. Chen ,  Liang-Pin Tai

IPC分类号： H02M3/335

CPC分类号： H02M3/33515

摘要： An apparatus and method for output voltage calibration of a primary feedback flyback power module extract the difference between the output voltage of the power module and a target value, and according thereto, calibrate a reference voltage which is used in regulation of the output voltage, to thereby calibrate the output voltage to be the target value.

摘要翻译： 用于主反馈反激功率模块的输出电压校准的装置和方法提取功率模块的输出电压与目标值之间的差异，并且根据该装置和方法校准用于调节输出电压的参考电压， 从而将输出电压校准为目标值。

公开(公告)号：US09479063B2

公开(公告)日：2016-10-25

申请号：US13567272

申请日：2012-08-06

申请人： Jiun-Hung Pan ,  Chien-Fu Tang ,  Isaac Y. Chen

发明人： Jiun-Hung Pan ,  Chien-Fu Tang ,  Isaac Y. Chen

IPC分类号： H02M3/335 ,  H02M1/44 ,  H02M3/156

CPC分类号： H03K7/08 ,  H02M1/08 ,  H02M1/44 ,  H02M3/156 ,  H02M3/33507 ,  H02M3/33515 ,  H02M3/33523 ,  H02M3/33546 ,  H02M2001/0009 ,  H02M2003/1566 ,  H03K2005/00019

摘要： A frequency jittering control circuit for a PFM power supply includes a pulse frequency modulator to generate a frequency jittering control signal to switch a power switch to generate an output voltage. The frequency jittering control circuit jitters an input signal or an on-time or off-time of the pulse frequency modulator to jitter the switching frequency of the power switch to thereby improve EMI issue.

摘要翻译： 用于PFM电源的频率抖动控制电路包括脉冲频率调制器，用于产生频率抖动控制信号以切换电源开关以产生输出电压。 频率抖动控制电路使脉冲频率调制器的输入信号或导通时间或关断时间抖动，以抖动电源开关的开关频率，从而改善EMI问题。

公开(公告)号：US20140286057A1

公开(公告)日：2014-09-25

申请号：US13847795

申请日：2013-03-20

申请人： JYUN-CHE HO ,  Jung-Pei Cheng ,  Yu-Chang Chen ,  Jiun-Hung Pan ,  Yung-Chih Lai ,  Isaac Y. Chen ,  Chien-Fu Tang

发明人： JYUN-CHE HO ,  Jung-Pei Cheng ,  Yu-Chang Chen ,  Jiun-Hung Pan ,  Yung-Chih Lai ,  Isaac Y. Chen ,  Chien-Fu Tang

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M1/08 ,  H02M2001/0006 ,  H02M2001/0048 ,  Y02B70/1491

摘要： A switching power converting apparatus includes a coil unit, a bipolar junction transistor (BJT) controlling power transfer through the coil unit, and a current sensing resistor sensing a current flowing through the BJT so as to produce a sensed voltage thereacross. A switching controller includes a current source supplying a first current, a current generating module generating, based on an input voltage associated with the sensed voltage, a second current, which is proportional to the current flowing through the BJT, a multiplexing module selecting one of the first and second currents as an output current, and a driving module outputting, based on the output current, a driving current, which is proportional to the output current, to the BJT to thereby conduct the BJT.

摘要翻译： 开关电源转换装置包括线圈单元，控制通过线圈单元的功率传输的双极结型晶体管（BJT），以及检测流过BJT的电流的电流感测电阻器，以便产生感测到的电压。 开关控制器包括提供第一电流的电流源，电流产生模块，基于与检测到的电压相关联的输入电压，产生与流过BJT的电流成比例的第二电流;多路复用模块选择 作为输出电流的第一和第二电流，以及基于输出电流将与输出电流成比例的驱动电流输出到BJT从而进行BJT的驱动模块。

公开(公告)号：US20130051089A1

公开(公告)日：2013-02-28

申请号：US13567272

申请日：2012-08-06

申请人： Jiun-Hung Pan ,  Chien-Fu Tang ,  Isaac Y. Chen

发明人： Jiun-Hung Pan ,  Chien-Fu Tang ,  Isaac Y. Chen

IPC分类号： H02M3/335

CPC分类号： H03K7/08 ,  H02M1/08 ,  H02M1/44 ,  H02M3/156 ,  H02M3/33507 ,  H02M3/33515 ,  H02M3/33523 ,  H02M3/33546 ,  H02M2001/0009 ,  H02M2003/1566 ,  H03K2005/00019

摘要： A frequency jittering control circuit for a PFM power supply includes a pulse frequency modulator to generate a frequency jittering control signal to switch a power switch to generate an output voltage. The frequency jittering control circuit jitters an input signal or an on-time or off-time of the pulse frequency modulator to jitter the switching frequency of the power switch to thereby improve EMI issue.

摘要翻译： 用于PFM电源的频率抖动控制电路包括脉冲频率调制器，用于产生频率抖动控制信号以切换电源开关以产生输出电压。 频率抖动控制电路使脉冲频率调制器的输入信号或导通时间或关断时间抖动，以抖动电源开关的开关频率，从而改善EMI问题。

公开(公告)号：US07800425B2

公开(公告)日：2010-09-21

申请号：US11984560

申请日：2007-11-20

申请人： Chien-Fu Tang ,  Isaac Y. Chen

发明人： Chien-Fu Tang ,  Isaac Y. Chen

IPC分类号： H03K5/08

CPC分类号： H03K19/1732

摘要： An on-chip mode-setting circuit and method are provided for a chip having an output driver with an output terminal connected to a pin of the chip. The pin may be defined between two states from exterior of the chip. The on-chip mode-setting circuit includes an electronic element connected to a bias input of the output driver for producing a voltage when the pin is defined at one of the two states, and a voltage detector for monitoring the voltage to determine which one of the two states the pin is at, and producing a mode-setting signal accordingly.

摘要翻译： 提供了具有输出驱动器的芯片的片上模式设置电路和方法，输出端连接到芯片的引脚。 引脚可以在芯片外部的两种状态之间定义。 片上模式设置电路包括连接到输出驱动器的偏置输入端的电子元件，用于当引脚被限定在两种状态中的一种状态时产生电压;以及电压检测器，用于监视电压以确定哪一个 引脚所在的两个状态，并相应地产生模式设置信号。

公开(公告)号：US07576522B2

公开(公告)日：2009-08-18

申请号：US12076798

申请日：2008-03-24

申请人： Isaac Y. Chen ,  Chien-Fu Tang

发明人： Isaac Y. Chen ,  Chien-Fu Tang

IPC分类号： G05F1/59

CPC分类号： H02M3/1588 ,  H02M1/36 ,  Y02B70/1466 ,  Y10S323/901

摘要： For soft start of a switching regulator, the output voltage of the switching regulator is fed back to be compared with a ramp signal, in order to trigger a comparison signal when the ramp signal rises up to reach the feedback signal, to enable the switching regulator such that the output voltage changes from a residual voltage toward a target value. The low side switch of the switching regulator is kept off for a period of time after the switching regulator is enabled, so as to prevent a reverse current during the soft start period.

摘要翻译： 对于开关稳压器的软启动，开关稳压器的输出电压被反馈以与斜坡信号进行比较，以便在斜坡信号上升以触发反馈信号时触发比较信号，以使开关稳压器 使得输出电压从残余电压向目标值变化。 在开关稳压器使能之后，开关稳压器的低侧开关保持关闭一段时间，以便在软启动期间防止反向电流。

公开(公告)号：US08674554B2

公开(公告)日：2014-03-18

申请号：US12818539

申请日：2010-06-18

申请人： Chi-Hua Lin ,  Chien-Fu Tang ,  Isaac Y Chen ,  An-Tung Chen

发明人： Chi-Hua Lin ,  Chien-Fu Tang ,  Isaac Y Chen ,  An-Tung Chen

IPC分类号： H02B1/24

CPC分类号： H02B1/24 ,  H04R3/007 ,  Y10T307/74 ,  Y10T307/766

摘要： A power off delay circuit includes a switch connected between an external power input terminal and an internal power supply terminal, a capacitor connected to the internal power supply terminal, and a hysteresis comparator to switch the switch according to the voltages of the external power input terminal and the internal power supply terminal. During on-time of the switch, the external power input terminal is connected to the internal power supply terminal and the capacitor can be charged by the external power source. When the switch is off, the capacitor provides electric power for an internal circuit. Application of the power off delay circuit to an audio system may eliminate the turn-off pops of the audio system.

摘要翻译： 断电延迟电路包括连接在外部电源输入端子和内部电源端子之间的开关，连接到内部电源端子的电容器和滞后比较器，用于根据外部电力输入端子的电压来切换开关 和内部电源端子。 在接通时，外部电源输入端子连接到内部电源端子，电容器可以通过外部电源充电。 当开关关闭时，电容为内部电路提供电力。 将断电延迟电路应用于音频系统可以消除音频系统的关闭声音。

公开(公告)号：US08400127B2

公开(公告)日：2013-03-19

申请号：US12878185

申请日：2010-09-09

申请人： An-Tung Chen ,  Isaac Y. Chen ,  Chien-Fu Tang

发明人： An-Tung Chen ,  Isaac Y. Chen ,  Chien-Fu Tang

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M2001/0009 ,  H05B33/0815 ,  Y02B20/347

摘要： The present invention discloses an average current regulator, a driver circuit of an average current regulator, and a method for regulating an average current. The average current regulator includes: a power stage including at least one power transistor which switches according to a pulse width modulation (PWM) signal to convert an input voltage to an output current; a feedback circuit coupled to the power stage, for generating a feedback signal; an ON-time controller coupled to the feedback circuit, for receiving the feedback signal and generating an ON-time signal according to the feedback signal and an average reference signal relating to a target average current; and a PWM controller, for generating the PWM signal according to the ON-time signal to regulate the average of the output current to the target average current.

摘要翻译： 本发明公开了一种平均电流调节器，平均电流调节器的驱动电路和用于调节平均电流的方法。 平均电流调节器包括：功率级，包括至少一个功率晶体管，其根据脉冲宽度调制（PWM）信号切换以将输入电压转换为输出电流; 耦合到功率级的反馈电路，用于产生反馈信号; 耦合到反馈电路的接通时间控制器，用于接收反馈信号并根据反馈信号和与目标平均电流相关的平均参考信号产生接通时间信号; 以及PWM控制器，用于根据接通时间信号产生PWM信号，以将输出电流的平均值调节到目标平均电流。

公开(公告)号：US20120306459A1

公开(公告)日：2012-12-06

申请号：US13478015

申请日：2012-05-22

申请人： Jyun-Che Ho ,  Chien-Fu Tang ,  Isaac Y. Chen ,  Shao-Hung Lu ,  Tzu-Chen Lin

发明人： Jyun-Che Ho ,  Chien-Fu Tang ,  Isaac Y. Chen ,  Shao-Hung Lu ,  Tzu-Chen Lin

IPC分类号： G05F1/70

CPC分类号： H05B33/0818

摘要： The present invention discloses a power factor correction circuit, a control circuit therefor and a method for driving a power factor correction circuit. The power factor correction circuit receives rectified power obtained by rectifying AC power, and corrects the power factor thereof. The power factor correction circuit includes an inductor, and it generates a reference signal as a limit for the inductor current. The reference signal is proportional to Comp/Vin, wherein Comp is a signal relating to a feedback signal, and Vin is a voltage signal relating to the AC power or the rectified power.

摘要翻译： 本发明公开了一种功率因数校正电路及其控制电路及驱动功率因数校正电路的方法。 功率因数校正电路接收通过整流交流电源而得到的整流功率，校正其功率因数。 功率因数校正电路包括电感器，并产生参考信号作为电感电流的限制。 参考信号与Comp / Vin成比例，其中Comp是与反馈信号相关的信号，Vin是与AC电力或整流功率有关的电压信号。