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1. 发明申请

US20150264761A1 LED DRIVE CIRCUIT WITH A PROGRAMMABLE INPUT FOR LED LIGHTING 审中-公开
标题翻译： LED驱动电路与LED照明可编程输入
公开(公告)号：US20150264761A1
公开(公告)日：2015-09-17
申请号：US14725459
申请日：2015-05-29
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG , CHUH-CHING LI , MING-CHIEH LEE , KUO-HSIEN HUANG
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , Y02B20/347
摘要： A LED drive circuit according to the present invention comprises a controller and a programmable signal. The controller generates a switching signal coupled to switch a magnetic device for generating an output current to drive a plurality of LEDs. The programmable signal is coupled to regulate a current-control signal of the controller. The switching signal is modulated in response to the current-control signal for regulating the output current, and the level of the output current is correlated to the current-control signal.
摘要翻译：根据本发明的LED驱动电路包括控制器和可编程信号。控制器产生耦合以切换磁性装置以产生输出电流以驱动多个LED的切换信号。可编程信号被耦合以调节控制器的电流控制信号。响应于用于调节输出电流的电流控制信号来调制开关信号，并且输出电流的电平与电流控制信号相关。

2. 发明申请

US20140233275A1 ADAPTIVE ACTIVE CLAMP OF FLYBACK POWER CONVERTER WITH HIGH EFFICIENCY FOR HEAVY LOAD AND LIGHT LOAD 有权
标题翻译：适用于重负荷和轻负载的高效飞轮功率转换器的自适应有源钳位
公开(公告)号：US20140233275A1
公开(公告)日：2014-08-21
申请号：US14182442
申请日：2014-02-18
申请人： System General Corp.
发明人： TA-YUNG YANG , CHIH-HSIEN HSIEH , KAI-FANG WEI , JUNG-SHENG CHEN
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M2001/0032 , Y02B70/16
摘要： A control circuit of a flyback power converter according to the present invention comprises a low-side transistor, an active-damper, a high-side drive circuit, and a controller. The low-side transistor is coupled to switch a transformer. The active-damper is coupled in parallel with the transformer. The high-side drive circuit is coupled to drive the active-clamper. The controller generates a switching signal and an active-clamp signal. The switching signal is coupled to drive the low-side transistor. The switching signal is generated in accordance with a feedback signal for regulating an output of the flyback power converter. The active-clamp signal is coupled to control the high-side drive circuit and the active-damper. The active-clamp signal is generated in response to a demagnetizing time of the transformer. The pulse number of the active-clamp signal is less than the pulse number of the switching signal in a light load condition.
摘要翻译：根据本发明的反激式功率转换器的控制电路包括低侧晶体管，主动阻尼器，高侧驱动电路和控制器。低侧晶体管被耦合以切换变压器。主动阻尼器与变压器并联。高侧驱动电路被耦合以驱动主动钳位器。控制器产生开关信号和有源钳位信号。开关信号被耦合以驱动低侧晶体管。根据用于调节反激式功率转换器的输出的反馈信号产生开关信号。有源钳位信号被耦合以控制高侧驱动电路和主动阻尼器。响应于变压器的消磁时间而产生有源钳位信号。有源钳位信号的脉冲数小于轻负载条件下的开关信号的脉冲数。

3. 发明申请

US20130182476A1 ADAPTIVE SAMPLING CIRCUIT FOR DETECTING THE DEMAGNETIZED VOLTAGE OF THE TRANSFORMER 有权
标题翻译：用于检测变压器脱扣电压的自适应采样电路
公开(公告)号：US20130182476A1
公开(公告)日：2013-07-18
申请号：US13742529
申请日：2013-01-16
申请人： System General Corp.
发明人： TA-YUNG YANG , LI LIN , JUNG-SHENG CHEN , CHIH-HSIEN HSIEH
IPC分类号： H02M7/48
CPC分类号： H02M7/48 , G01R31/42 , H02M3/33523
摘要： An adaptive sampling circuit of the power converter according to the present invention comprises a sample-and-hold unit and a signal-generation circuit. The sample-and-hold unit is coupled to a transformer to generate a feedback signal by sampling a demagnetized voltage of the transformer in response to a sample signal. The signal-generation circuit generates the sample signal in response to a magnetized voltage of the transformer, the demagnetized voltage of the transformer, a switching signal and a code. The sample signal is used for sampling the demagnetized voltage. The feedback signal is correlated to an output voltage of the power converter. The switching signal is generated in response to the feedback signal for switching the transformer and regulating the output of the power converter. The adaptive sampling circuit is used to precisely measure the demagnetized voltage of the transformer without the limitation of the transformer design.
摘要翻译：根据本发明的功率转换器的自适应采样电路包括采样保持单元和信号发生电路。采样和保持单元耦合到变压器以通过响应于采样信号对变压器的退磁电压进行采样来产生反馈信号。信号发生电路响应于变压器的磁化电压，变压器的退磁电压，开关信号和代码产生采样信号。采样信号用于对退磁电压进行采样。反馈信号与功率转换器的输出电压相关。响应于用于切换变压器的反馈信号和调节功率转换器的输出而产生开关信号。自适应采样电路用于精确测量变压器的退磁电压，而不受变压器设计的限制。

4. 发明申请

US20130106488A1 SUCCESSIVE APPROXIMATION MULTIPLIER-DIVIDER FOR SIGNAL PROCESS AND METHOD FOR SIGNAL PROCESS 有权
标题翻译：用于信号处理的后续逼近乘法器和信号处理方法
公开(公告)号：US20130106488A1
公开(公告)日：2013-05-02
申请号：US13666080
申请日：2012-11-01
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG
IPC分类号： G06G7/16
CPC分类号： H03M1/66
摘要： A multiplier-divider circuit for signal process according to the present invention comprises a digital-to-analog converter, a first counter, a second counter, an oscillation circuit, and a control-logic apparatus. The digital-to-analog converter generates an output signal of the multiplier-divider circuit in accordance with the value of an input signal and a first signal. The first counter generates the first signal in response to a clock signal and the duty cycle of the input signal. The second counter generates a second signal in response to the clock signal and the period of the input signal. The oscillation circuit generates the clock signal in accordance with a third signal. The control-logic apparatus generates the third signal in response to the second signal and a constant. The first signal is correlated to the duty cycle of the input signal. The second signal is correlated to the period of the input signal.
摘要翻译：根据本发明的用于信号处理的乘法器分频器电路包括数模转换器，第一计数器，第二计数器，振荡电路和控制逻辑器件。数模转换器根据输入信号和第一信号的值产生乘法器 - 分频器电路的输出信号。第一计数器响应于时钟信号和输入信号的占空比产生第一信号。第二计数器响应于时钟信号和输入信号的周期产生第二信号。振荡电路根据第三信号产生时钟信号。控制逻辑装置响应于第二信号产生第三信号和常数。第一个信号与输入信号的占空比相关。第二信号与输入信号的周期相关。

5. 发明申请

US20170003698A9 REGULATION CIRCUIT ASSOCIATED WITH SYNCHRONOUS RECTIFIER PROVIDING CABLE COMPENSATION FOR THE POWER CONVERTER AND METHOD THEREOF 审中-公开
标题翻译：与同步整流器相关的调节电路为功率转换器提供电缆补偿及其方法
公开(公告)号：US20170003698A9
公开(公告)日：2017-01-05
申请号：US14791649
申请日：2015-07-06
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG , CHOU-SHENG WANG
IPC分类号： G05F1/575
CPC分类号： G05F1/575 , H02M3/33592 , H02M2001/0025 , Y02B70/1475
摘要： A regulation circuit of a power converter for cable compensation according to the present invention comprises a signal generator generating a compensation signal in accordance with a synchronous rectifying signal. An error amplifier has a reference signal for generating a feedback signal in accordance with an output voltage of the power converter. The compensation signal is coupled to program the reference signal. The feedback signal is coupled to generate a switching signal for regulating an output of the power converter. The regulation circuit of the present invention compensates the output voltage without a shunt resistor to sense the output current of the power converter for reducing power loss.
摘要翻译：根据本发明的用于电缆补偿的功率转换器的调节电路包括根据同步整流信号产生补偿信号的信号发生器。误差放大器具有用于根据功率转换器的输出电压产生反馈信号的参考信号。该补偿信号被耦合以对参考信号进行编程。反馈信号被耦合以产生用于调节功率转换器的输出的开关信号。本发明的调节电路在没有分流电阻的情况下补偿输出电压，以感测功率转换器的输出电流以降低功率损耗。

6. 发明申请

US20150115921A1 PROGRAMMABLE FREQUENCY DECREASE CIRCUIT FOR A PROGRAMMABLE POWER SUPPLY 有权
标题翻译：可编程电源可编程降频电路
公开(公告)号：US20150115921A1
公开(公告)日：2015-04-30
申请号：US14525319
申请日：2014-10-28
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG , CHEN-HUA CHIU , YONG-ANN ANG , JHIH-DA HSU
IPC分类号： H02M1/08 , H02M3/156
CPC分类号： H02M3/33523 , H02M2001/0025
摘要： A control circuit and a method for a programmable power supply are provided. The control circuit and the method modulate a switching frequency of a switching signal in response to a feedback signal and an output voltage of the programmable power supply. The switching signal is used for switching a transformer and regulating an output of the programmable power supply. The level of the feedback signal is related to the level of an output power of the programmable power supply. The output voltage of the programmable power supply is programmable. Further, the control circuit and the method modulate a maximum switching frequency of the switching signal in response to the output voltage of the programmable power supply for stabilizing the system.
摘要翻译：提供了一种用于可编程电源的控制电路和方法。控制电路和方法响应于可编程电源的反馈信号和输出电压来调制开关信号的开关频率。开关信号用于切换变压器并调节可编程电源的输出。反馈信号的电平与可编程电源的输出功率的电平有关。可编程电源的输出电压是可编程的。此外，控制电路和方法响应于用于稳定系统的可编程电源的输出电压来调制开关信号的最大开关频率。

7. 发明申请

US20140307484A1 CONTROL CIRCUIT FOR ACTIVE CLAMP FLYBACK POWER CONVERTER WITH PREDICTED TIMING CONTROL 有权
标题翻译：具有预测时序控制的有源钳位电源转换器的控制电路
公开(公告)号：US20140307484A1
公开(公告)日：2014-10-16
申请号：US14251899
申请日：2014-04-14
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG
IPC分类号： H02M3/335
CPC分类号： H02M3/33569 , H02M2001/342 , Y02B70/1491
摘要： A control circuit of a flyback power converter according to the present invention comprises a low-side transistor, an active-clamper, a high-side drive circuit, and a controller. The low-side transistor is coupled to switch a transformer. The active-clamper is coupled in parallel with the transformer. The high-side drive circuit is coupled to drive the active-damper. The controller generates a switching signal and an active-clamp signal. The switching signal is coupled to drive the low-side transistor. The switching signal is generated in accordance with a feedback signal for regulating an output voltage of the flyback power converter. The active-clamp signal is coupled to control the high-side drive circuit and the active-clamper. The active-clamp signal is generated in response to a predicted time of the transformer. The predicted time is determined in accordance with an input voltage, the output voltage and an on time of the switching signal.
摘要翻译：根据本发明的反激式功率转换器的控制电路包括低侧晶体管，有源钳位器，高侧驱动电路和控制器。低侧晶体管被耦合以切换变压器。主动钳位器与变压器并联耦合。高侧驱动电路被联接以驱动主动阻尼器。控制器产生开关信号和有源钳位信号。开关信号被耦合以驱动低侧晶体管。开关信号根据用于调节反激式功率转换器的输出电压的反馈信号而产生。有源钳位信号被耦合以控制高侧驱动电路和主动钳位器。响应于变压器的预测时间产生有源钳位信号。预测时间根据输入电压，输出电压和开关信号的接通时间来确定。

8. 发明申请

US20140036548A1 CONTROL CIRCUIT WITH FAST DYNAMIC RESPONSE FOR POWER CONVERTERS 有权
标题翻译：用于功率转换器的快速动态响应的控制电路
公开(公告)号：US20140036548A1
公开(公告)日：2014-02-06
申请号：US13957725
申请日：2013-08-02
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG , LI LIN , JUNG-SHENG CHEN
IPC分类号： H02M3/335
CPC分类号： H02M3/335 , H02M3/33507 , H02M2003/1566
摘要： A control circuit of a power converter is provided. It comprises a voltage detection circuit detecting a reflected signal for generating a voltage-loop signal. A current detection circuit detects a current of a transformer for generating a current-loop signal. An oscillator generates an oscillation signal in accordance with an output load of the power converter. A PWM circuit generates a switching signal according to the voltage-loop signal, the current-loop signal and the oscillation signal for regulating an output of the power converter. A load detection circuit receives a detection signal through an signal-transfer device for increasing a switching frequency of the switching signal. The detection signal is generated once the output is lower than a low-voltage threshold. The oscillation signal determines the switching frequency of the switching signal. The control circuit reduces the voltage drop of the output when the output load is changed.
摘要翻译：提供电力转换器的控制电路。它包括检测用于产生电压环路信号的反射信号的电压检测电路。电流检测电路检测用于产生电流环路信号的变压器的电流。振荡器根据功率转换器的输出负载产生振荡信号。 PWM电路根据电压环路信号，电流环路信号和用于调节功率转换器的输出的振荡信号产生开关信号。负载检测电路通过用于增加开关信号的开关频率的信号传送装置接收检测信号。一旦输出低于低电压阈值，就产生检测信号。振荡信号决定开关信号的开关频率。当输出负载变化时，控制电路可以降低输出的电压降。

9. 发明申请

US20130329468A1 SWITCHING CONTROLLER WITH CLAMP CIRCUIT FOR CAPACITOR-LESS POWER SUPPLIES 审中-公开
标题翻译：使用无电容器电源的钳位电路切换控制器
公开(公告)号：US20130329468A1
公开(公告)日：2013-12-12
申请号：US13910260
申请日：2013-06-05
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M3/33507
摘要： A control circuit of a power converter according to the present invention comprises a switching circuit and a sample circuit. The switching circuit generates a switching signal in accordance with a feedback signal and a sampled signal. The switching signal is coupled to switch a transformer of the power converter for regulating an output of the power converter. The feedback signal is generated in accordance with the output of the power converter. The sample circuit generates the sampled signal by sampling a signal of the transformer. The sampled signal is correlated to an output voltage of the power converter.
摘要翻译：根据本发明的功率转换器的控制电路包括开关电路和采样电路。开关电路根据反馈信号和采样信号产生开关信号。开关信号被耦合以切换功率转换器的变压器，用于调节功率转换器的输出。根据功率转换器的输出产生反馈信号。采样电路通过对变压器的信号进行采样来产生采样信号。采样信号与功率转换器的输出电压相关。

10. 发明申请

US20130279220A1 SWITCHING CONTROL CIRCUIT WITH SIGNAL PROCESS TO ACCOMMODATE THE SYNCHRONOUS RECTIFIER OF POWER CONVERTERS 有权
标题翻译：具有信号处理的开关控制电路，用于调节功率转换器同步整流器
公开(公告)号：US20130279220A1
公开(公告)日：2013-10-24
申请号：US13867248
申请日：2013-04-22
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG
IPC分类号： H02M7/537 , H02H7/122
CPC分类号： H02M7/537 , H02H7/1227 , H02M1/32 , H02M3/33507 , H02M3/33592 , Y02B70/1475
摘要： A switching control circuit of a power converter according to the present invention comprises an input circuit and a clock generator. The input circuit is coupled to receive a feedback signal for generating a switching signal. The clock generator generates a clock signal to determine a switching frequency of the switching signal. The feedback signal is correlated to an output of the power converter. The switching signal is coupled to switch a transformer of the power converter for regulating the output of the power converter. The pulse width of the switching signal is reduced before the switching frequency of the switching signal is changed from a low frequency to a high frequency.
摘要翻译：根据本发明的功率转换器的开关控制电路包括输入电路和时钟发生器。输入电路被耦合以接收用于产生开关信号的反馈信号。时钟发生器产生时钟信号以确定开关信号的开关频率。反馈信号与功率转换器的输出相关。开关信号被耦合以切换功率转换器的变压器，用于调节功率转换器的输出。在开关信号的开关频率从低频变为高频之前，开关信号的脉冲宽度减小。

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