公开(公告)号：US20080211471A1

公开(公告)日：2008-09-04

申请号：US12071727

申请日：2008-02-26

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

公开(公告)号：US07839667B2

公开(公告)日：2010-11-23

申请号：US12071727

申请日：2008-02-26

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Jwin-Yen Guo

IPC分类号： H02M3/24

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided for preventing the converter from entering pulse skipping mode, which employs a current trimming circuit in an oscillator for a PWM controller in the converter to reduce a charging current in the oscillator if the output voltage of the converter is excessively high, to thereby reduce the oscillator frequency and in turn lower the switching frequency of a high-side power switch of the converter.

摘要翻译： 在用于开关模式功率转换器的自适应前沿消隐电路和方法中，感测转换器的电感器电流并将其与阈值进行比较以决定前沿消隐时间的终点。 进一步提供电路和方法，用于防止转换器进入脉冲跳跃模式，其在转换器中的PWM控制器的振荡器中采用电流微调电路，以在转换器的输出电压过高时降低振荡器中的充电电流 ，从而降低振荡器频率，从而降低转换器的高侧功率开关的开关频率。

公开(公告)号：US07911273B2

公开(公告)日：2011-03-22

申请号：US12382762

申请日：2009-03-24

申请人： Jing-Meng Liu ,  Jwin-Yen Guo ,  Shao-Ming Sun

发明人： Jing-Meng Liu ,  Jwin-Yen Guo ,  Shao-Ming Sun

IPC分类号： H03F3/217

CPC分类号： H03F3/2173 ,  H03F1/26 ,  H03F2200/03 ,  H03F2200/114 ,  H03F2200/351

摘要： A switching amplifier has a network including current sources and resistors connected to the two output terminals of the H-bridge of the switching amplifier, to provide a small current to the load connected between the two output terminals at zero input, whereby the common mode voltage bouncing is reduced and the switching amplifier has less power consumption and reduced electro-magnetic interference.

摘要翻译： 开关放大器具有包括连接到开关放大器的H桥的两个输出端的电流源和电阻器的网络，以在零输入处向连接在两个输出端子之间的负载提供小电流，由此共模电压 弹跳减少，开关放大器功耗更低，电磁干扰减少。

公开(公告)号：US20090243722A1

公开(公告)日：2009-10-01

申请号：US12382762

申请日：2009-03-24

申请人： Jing-Meng Liu ,  Jwin-Yen Guo ,  Shao-Ming Sun

发明人： Jing-Meng Liu ,  Jwin-Yen Guo ,  Shao-Ming Sun

IPC分类号： H03F3/217

CPC分类号： H03F3/2173 ,  H03F1/26 ,  H03F2200/03 ,  H03F2200/114 ,  H03F2200/351

摘要： A switching amplifier has a network including current sources and resistors connected to the two output terminals of the H-bridge of the switching amplifier, to provide a small current to the load connected between the two output terminals at zero input, whereby the common mode voltage bouncing is reduced and the switching amplifier has less power consumption and reduced electro-magnetic interference.

摘要翻译： 开关放大器具有包括连接到开关放大器的H桥的两个输出端的电流源和电阻器的网络，以在零输入处向连接在两个输出端子之间的负载提供小电流，由此共模电压 弹跳减少，开关放大器功耗更低，电磁干扰减少。

公开(公告)号：US20160218617A1

公开(公告)日：2016-07-28

申请号：US15092014

申请日：2016-04-06

申请人： Chia-Wei Liao ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Jing-Meng Liu

IPC分类号： H02M1/42 ,  H02M1/08 ,  G05F3/26

CPC分类号： H02M1/42 ,  G05F3/262 ,  H02M1/08 ,  H02M1/126 ,  H02M1/4208 ,  H02M2001/0009 ,  Y02B70/126

摘要： The present invention discloses a power supply circuit with power factor correction (PFC) function, and an automatic gain control circuit therefor and a control method thereof. The power supply circuit includes the automatic gain control circuit and a load driver circuit. The automatic gain control circuit converts an input voltage to a regulation voltage, and the load driver circuit generates an output current according to the regulation voltage. The automatic gain control circuit automatically adjust the regulation voltage such that the regulation voltage has a substantially fixed amplitude or fixed average value under different input voltages of different specifications, and the output current provided by the load driver circuit varies in phase with the input voltage to provide a PFC function.

公开(公告)号：US08884537B2

公开(公告)日：2014-11-11

申请号：US13728541

申请日：2012-12-27

申请人： Chia-Wei Liao ,  Leng-Nien Hsiu ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Leng-Nien Hsiu ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

IPC分类号： H05B37/02 ,  H05B39/02 ,  H05B39/04 ,  H05B41/36 ,  G05F3/02 ,  G05F1/455 ,  H05B33/08 ,  G05F1/10

CPC分类号： G05F1/455 ,  G05F1/10 ,  G05F3/02 ,  H05B33/0815 ,  H05B37/02 ,  Y02B20/346

摘要： The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal having an OFF phase and an ON phase. The active bleeder includes: a detection circuit for generating a detection signal according to the rectified signal and accumulating the detection signal in the OFF phase of the rectified signal; and a current sinker circuit coupled to the detection circuit, for generates a latching current to trigger the TRIAC circuit by operating a switch when the detection signal exceeds a predetermined level. The present invention also discloses a light emitting device power supply circuit and a TRIAC control method using the active bleeder circuit.

摘要翻译： 本发明公开了一种能够全相触发三电极交流开关（TRIAC）电路的有源泄放电路。 有源泄放电路接收具有OFF相位和ON相位的整流信号。 有源放电器包括：检测电路，用于根据整流信号产生检测信号，并将检测信号累积在整流信号的OFF相位; 以及耦合到检测电路的电流沉降电路，用于当检测信号超过预定电平时，通过操作开关产生触发TRIAC电路的锁存电流。 本发明还公开了一种使用有源泄放电路的发光器件电源电路和TRIAC控制方法。

公开(公告)号：US08710755B2

公开(公告)日：2014-04-29

申请号：US13421733

申请日：2012-03-15

申请人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

发明人： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

IPC分类号： H05B37/02

CPC分类号： H05B33/0815

摘要： The present invention discloses a light emitting device power supply circuit, a light emitting device driver circuit and a control method thereof. The light emitting device driver circuit is coupled to a tri-electrode AC switch (TRIAC) dimmer circuit, and it controls the brightness of a light emitting device circuit according a rectified dimming signal. The light emitting device driver circuit includes a power stage circuit and a light emitting device control circuit. The light emitting device control circuit generates a switch control signal. The power stage circuit operates at least one power switch thereof according to the switch control signal to generate a latching current for firing the TRIAC dimmer circuit, and the latching current is inputted to the light emitting device circuit.

摘要翻译： 本发明公开了一种发光装置电源电路，发光装置驱动电路及其控制方法。 发光器件驱动电路耦合到三极交流开关（TRIAC）调光电路，并根据整流调光信号控制发光器件电路的亮度。 发光器件驱动电路包括功率级电路和发光器件控制电路。 发光装置控制电路产生开关控制信号。 功率级电路根据开关控制信号操作其至少一个电源开关，以产生用于触发TRIAC调光电路的锁存电流，并且将锁存电流输入到发光器件电路。

公开(公告)号：US20130114308A1

公开(公告)日：2013-05-09

申请号：US13674824

申请日：2012-11-12

申请人： Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu ,  Pei-Yuan Chen

发明人： Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu ,  Pei-Yuan Chen

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  Y02B70/126

摘要： The present invention discloses a switching regulator and a control circuit and a control method thereof. The control circuit of the switching regulator, which controls rectified power within a predetermined range, detects an input voltage and an input current to generate a voltage detection signal and a current detection signal respectively, and the voltage detection signal and the current detection signal are multiplied by one the other to generate a power index. The control circuit generates an error signal according to the power index and a reference signal. A low-pass-filter filters a high frequency band in the process. A control signal generation circuit of the control circuit generates a control signal according to the error signal. And a driver circuit of the control circuit generates an operation signal according to the control signal, for switching a power switch to convert the rectified power to an output voltage.

摘要翻译： 本发明公开了一种开关调节器及其控制电路及其控制方法。 开关调节器的控制电路，其控制在预定范围内的整流功率，检测输入电压和输入电流，分别产生电压检测信号和电流检测信号，并将电压检测信号和电流检测信号相乘 通过另一个来产生权力指数。 控制电路根据功率指标和参考信号产生误差信号。 低通滤波器过滤高频带。 控制电路的控制信号生成电路根据误差信号生成控制信号。 并且控制电路的驱动电路根据控制信号生成操作信号，用于切换电源开关以将整流功率转换为输出电压。

公开(公告)号：US20130169177A1

公开(公告)日：2013-07-04

申请号：US13728541

申请日：2012-12-27

申请人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Leng-Nien Hsin ,  Pei-Yuan Chen ,  Roland Van Roy ,  Jing-Meng Liu

IPC分类号： G05F1/455 ,  G05F3/02 ,  H05B37/02

CPC分类号： G05F1/455 ,  G05F1/10 ,  G05F3/02 ,  H05B33/0815 ,  H05B37/02 ,  Y02B20/346

摘要： The present invention discloses an active bleeder circuit capable of triggering a tri-electrode AC switch (TRIAC) circuit in all phase. The active bleeder circuit receives a rectified signal having an OFF phase and an ON phase. The active bleeder includes: a detection circuit for generating a detection signal according to the rectified signal and accumulating the detection signal in the OFF phase of the rectified signal; and a current sinker circuit coupled to the detection circuit, for generates a latching current to trigger the TRIAC circuit by operating a switch when the detection signal exceeds a predetermined level. The present invention also discloses a light emitting device power supply circuit and a TRIAC control method using the active bleeder circuit.

摘要翻译： 本发明公开了一种能够全相触发三电极交流开关（TRIAC）电路的有源放电电路。 有源泄放电路接收具有OFF相位和ON相位的整流信号。 有源放电器包括：检测电路，用于根据整流信号产生检测信号，并将检测信号累积在整流信号的OFF相位; 以及耦合到检测电路的电流沉降电路，用于当检测信号超过预定电平时，通过操作开关产生触发TRIAC电路的锁存电流。 本发明还公开了一种使用有源泄放电路的发光器件电源电路和TRIAC控制方法。

公开(公告)号：US09287796B2

公开(公告)日：2016-03-15

申请号：US13765609

申请日：2013-02-12

申请人： Chia-Wei Liao ,  Jing-Meng Liu

发明人： Chia-Wei Liao ,  Jing-Meng Liu

IPC分类号： H02M3/335 ,  H02M5/40 ,  H02M1/00

CPC分类号： H02M5/40 ,  H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

摘要： The present invention discloses an isolated power converter circuit and a control method thereof. The isolated power converter circuit includes: a transformer circuit, a power switch circuit, an opto-coupler circuit, and a control circuit. The transformer circuit includes a first winding and a second winding. The power switch circuit is coupled to the transformer circuit to control it according to a driving signal. The opto-coupler circuit generates a feedback signal. The control circuit is coupled to the power switch circuit and the opto-coupler circuit, for generating the driving signal according to the feedback signal. The control circuit includes a distinguishing circuit for distinguishing a status of the feedback signal.

摘要翻译： 本发明公开了一种隔离电力转换电路及其控制方法。 隔离电力转换器电路包括：变压器电路，电源开关电路，光耦合器电路和控制电路。 变压器电路包括第一绕组和第二绕组。 功率开关电路耦合到变压器电路，以根据驱动信号进行控制。 光耦合器电路产生反馈信号。 控制电路耦合到功率开关电路和光耦合器电路，用于根据反馈信号产生驱动信号。 控制电路包括用于区分反馈信号的状态的区别电路。