公开(公告)号：US20120032614A1

公开(公告)日：2012-02-09

申请号：US12849965

申请日：2010-08-04

申请人： Wei-Chuan SU ,  Chia-Chieh HUNG ,  Ko-Yen LEE

发明人： Wei-Chuan SU ,  Chia-Chieh HUNG ,  Ko-Yen LEE

IPC分类号： H05B37/02

CPC分类号： H05B33/0821 ,  H05B33/0812 ,  Y02B20/345

摘要： A novel LED driver circuit, including: a current regulation circuit, having a first end and a second end, wherein a first current is flowing into the second end, and a voltage difference between the first end and the second end is generated in response to the first current; a transistor, coupled with the first end and second end of the current regulation circuit; a bias network, having a first end and a second end, the second end being coupled with the transistor; and a LED module, having at least two connection nodes, wherein the connection node at one end of the LED module is coupled to a line voltage, the connection node at the other end of the LED module is coupled to the transistor, and one of the at least two connection nodes is coupled with the first end of the bias network.

摘要翻译： 一种新颖的LED驱动器电路，包括：电流调节电路，具有第一端和第二端，其中第一电流流入第二端，并且响应于第一端和第二端产生第一端和第二端之间的电压差 第一流; 与电流调节电路的第一端和第二端耦合的晶体管; 偏置网络，具有第一端和第二端，所述第二端与所述晶体管耦合; 以及具有至少两个连接节点的LED模块，其中所述LED模块的一端处的所述连接节点耦合到线路电压，所述LED模块的另一端处的所述连接节点耦合到所述晶体管，并且所述LED模块中的一个 所述至少两个连接节点与所述偏置网络的第一端耦合。

公开(公告)号：US20150207399A1

公开(公告)日：2015-07-23

申请号：US14158922

申请日：2014-01-20

申请人： IMMENSE ADVANCE TECHNOLOGY CORP.

发明人： Jian-Shen LI ,  Yueh-Hua CHIANG ,  Wei-Chun HSIAO

IPC分类号： H02M1/14 ,  H05B33/08 ,  H02M3/156

CPC分类号： H02M1/14 ,  H02M3/156 ,  H02M2001/0025 ,  H05B33/0818 ,  Y02B20/347

摘要： A PWM controller capable of controlling output current ripple via a resistor, and an LED driver circuit using the PWM controller, the PWM controller including: a sawtooth signal generation unit for generating a sawtooth signal, of which a slope of a positive ramp is controlled by a control current, and the control current is determined by an external resistor; an amplifier having a positive input end coupled with a reference voltage, a negative input end coupled with a current sense signal, and an output end coupled with an external capacitor for generating a comparison signal; and a comparator having a positive input end coupled with the sawtooth signal, a negative input end coupled with the comparison signal, and an output end for generating an end-of-conduction signal, wherein the end-of-conduction signal will become active whenever the sawtooth signal reaches the comparison signal.

摘要翻译： 一种能够通过电阻器控制输出电流纹波的PWM控制器和使用PWM控制器的LED驱动器电路，PWM控制器包括：锯齿波信号产生单元，用于产生锯齿波信号，其中正斜坡的斜率由 控制电流，控制电流由外部电阻确定; 具有与参考电压耦合的正输入端的放大器，与电流感测信号耦合的负输入端，以及与用于产生比较信号的外部电容耦合的输出端; 以及具有与锯齿波信号耦合的正输入端的比较器，与比较信号耦合的负输入端，以及用于产生导通信号的输出端，其中，导通信号信号将在每当 锯齿波信号达到比较信号。

公开(公告)号：US08384304B2

公开(公告)日：2013-02-26

申请号：US12861549

申请日：2010-08-23

申请人： Chia-Chieh Hung ,  Yen-Hui Wang ,  Ko-Yen Lee ,  Wei-Chuan Su

发明人： Chia-Chieh Hung ,  Yen-Hui Wang ,  Ko-Yen Lee ,  Wei-Chuan Su

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0809

摘要： A novel LED driver controller, including: an auto-gain control unit, having an input end coupled to an input voltage signal which is derived from a line voltage, and an output end for providing a normalized signal; a comparator, used to perform voltage comparison on the normalized signal and a current sensing signal to generate a turn-off signal, wherein the turn-off signal will change state from inactive to active when the current sensing signal reaches the normalized signal; and a driving circuit, having a set input end, a reset input end, and an output end, the set input end being coupled to a turn-on signal, the reset input end being coupled to the turn-off signal, the output end being used for providing a gating signal.

摘要翻译： 一种新颖的LED驱动器控制器，包括：自动增益控制单元，具有耦合到从线电压导出的输入电压信号的输入端和用于提供归一化信号的输出端; 用于对归一化信号进行电压比较的比较器和用于产生关断信号的电流感测信号，其中当电流感测信号达到归一化信号时，关断信号将从非活动状态改变为有效; 以及具有设定输入端，复位输入端和输出端的驱动电路，所述输入端与接通信号耦合，所述复位输入端耦合到所述关断信号，所述输出端 用于提供门控信号。

公开(公告)号：US20120126759A1

公开(公告)日：2012-05-24

申请号：US12953219

申请日：2010-11-23

申请人： Ko-Yen LEE ,  Chia-Chieh HUNG ,  Wei-Chuan SU

发明人： Ko-Yen LEE ,  Chia-Chieh HUNG ,  Wei-Chuan SU

IPC分类号： G05F5/00

CPC分类号： H05B33/0809 ,  H02M1/4225 ,  H05B33/0815 ,  Y02B70/126

摘要： A power conversion controller having a novel power factor correction mechanism, including: a normalization unit, used to generate a normalized signal according to a line voltage by multiplying the line voltage with a normalizing gain, wherein the normalizing gain is proportional to the reciprocal of the amplitude of the line voltage; a reference current generation unit, coupled to the normalization unit to generate a reference current signal by performing an arithmetic operation, wherein the arithmetic operation involves the normalized signal; and a gate drive signal generation unit, used to generate a gate drive signal, wherein the duty of the gate drive signal is determined by a voltage comparison of the reference current signal and a current sensing signal.

摘要翻译： 一种具有新型功率因数校正机构的功率转换控制器，包括：归一化单元，用于根据线电压通过将线电压乘以归一化增益来产生归一化信号，其中归一化增益与 线电压幅值; 参考电流产生单元，其耦合到所述归一化单元，以通过执行算术运算来产生参考电流信号，其中所述算术运算涉及所述归一化信号; 以及用于产生栅极驱动信号的栅极驱动信号生成单元，其中栅极驱动信号的占空比由参考电流信号和电流感测信号的电压比较确定。

公开(公告)号：US20120062194A1

公开(公告)日：2012-03-15

申请号：US12880380

申请日：2010-09-13

申请人： Yen-Hui WANG ,  Wei-Chuan SU ,  Yu-Wen CHANG

发明人： Yen-Hui WANG ,  Wei-Chuan SU ,  Yu-Wen CHANG

IPC分类号： G05F1/00

CPC分类号： H02M3/156

摘要： A high side controller capable of sensing input voltage and output voltage of a power conversion circuit, including: a first switch, having a control end and two channel ends, the control end being coupled to a gate signal, and one of the two channel ends being coupled to a voltage signal, wherein the voltage signal is proportional to a negative version of the input voltage when the gate signal is active; an inverting amplification circuit, having an input end coupled to the other one of the two channel ends, and an output end for providing a first processed voltage; and a first sample and hold circuit, having a control input end coupled to the gate signal, an input end coupled to the first processed voltage, and an output end for providing a first sample voltage.

摘要翻译： 一种能够感测功率转换电路的输入电压和输出电压的高侧控制器，包括：具有控制端和两个通道端的第一开关，所述控制端耦合到栅极信号，并且所述两个通道端之一 耦合到电压信号，其中当栅极信号有效时，电压信号与输入电压的负型成正比; 反相放大电路，具有耦合到两个通道端中的另一个的输入端，以及用于提供第一处理电压的输出端; 以及第一采样和保持电路，其具有耦合到所述栅极信号的控制输入端，耦合到所述第一处理电压的输入端以及用于提供第一采样电压的输出端。

公开(公告)号：US09049760B2

公开(公告)日：2015-06-02

申请号：US13794278

申请日：2013-03-11

申请人： IMMENSE ADVANCE TECHNOLOGY CORP.

发明人： Yen-Hui Wang

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0809 ,  H05B33/0851 ,  Y02B20/348

摘要： A PFC LED driver having a flicker control mechanism, including: a bridge rectifier, used to generate a full-wave-rectified line input voltage according to an AC power; a single stage PFC constant average current converter, coupled with the bridge rectifier and used for forcing an input current to track the full-wave-rectified line input voltage and regulating an average value of an output current at a first preset value; and a current ripple reducing unit, in series with an LED module to form a load for the output current to flow through, wherein the current ripple reducing unit has a negative feedback control mechanism for forcing a peak of the output current approach an average value of the output current.

摘要翻译： 一种具有闪烁控制机构的PFC LED驱动器，包括：桥式整流器，用于根据交流电源产生全波整流线路输入电压; 单级PFC恒定平均电流转换器，与桥式整流器耦合，用于强制输入电流跟踪全波整流线路输入电压并调节第一预设值的输出电流的平均值; 以及电流纹波降低单元，与LED模块串联以形成用于输出电流流过的负载，其中电流纹波降低单元具有用于强制输出电流的峰值的负反馈控制机构接近平均值 输出电流。

公开(公告)号：US08247986B2

公开(公告)日：2012-08-21

申请号：US12795930

申请日：2010-06-08

申请人： Wei-Chuan Su ,  Ko-Yen Lee

发明人： Wei-Chuan Su ,  Ko-Yen Lee

IPC分类号： H05B41/16

CPC分类号： H02M1/4258 ,  H05B33/0818 ,  Y02B70/126

摘要： A power conversion controller having an adaptive peak current reference, including: a peak current reference generation means, used for generating a peak current reference signal by performing an adaptive arithmetic operation on an output voltage feedback signal and a power source signal; and a comparator means, used for generating a gating signal by performing a voltage comparison operation on the peak current reference signal and a current sensing signal.

摘要翻译： 一种具有自适应峰值电流参考值的电力转换控制器，包括：峰值电流参考产生装置，用于通过对输出电压反馈信号和电源信号执行自适应算术运算来产生峰值电流参考信号; 以及比较器装置，用于通过对峰值电流参考信号和电流感测信号执行电压比较操作来产生选通信号。

公开(公告)号：US08193733B2

公开(公告)日：2012-06-05

申请号：US12849965

申请日：2010-08-04

申请人： Wei-Chuan Su ,  Chia-Chieh Hung ,  Ko-Yen Lee

发明人： Wei-Chuan Su ,  Chia-Chieh Hung ,  Ko-Yen Lee

IPC分类号： H05B37/02

CPC分类号： H05B33/0821 ,  H05B33/0812 ,  Y02B20/345

摘要： A novel LED driver circuit, including: a current regulation circuit, having a first end and a second end, wherein a first current is flowing into the second end, and a voltage difference between the first end and the second end is generated in response to the first current; a transistor, coupled with the first end and second end of the current regulation circuit; a bias network, having a first end and a second end, the second end being coupled with the transistor; and a LED module, having at least two connection nodes, wherein the connection node at one end of the LED module is coupled to a line voltage, the connection node at the other end of the LED module is coupled to the transistor, and one of the at least two connection nodes is coupled with the first end of the bias network.

摘要翻译： 一种新颖的LED驱动器电路，包括：电流调节电路，具有第一端和第二端，其中第一电流流入第二端，并且响应于第一端和第二端产生第一端和第二端之间的电压差 第一流; 与电流调节电路的第一端和第二端耦合的晶体管; 偏置网络，具有第一端和第二端，所述第二端与所述晶体管耦合; 以及具有至少两个连接节点的LED模块，其中所述LED模块的一端处的所述连接节点耦合到线路电压，所述LED模块的另一端处的所述连接节点耦合到所述晶体管，并且所述LED模块中的一个 所述至少两个连接节点与所述偏置网络的第一端耦合。

公开(公告)号：US08541990B2

公开(公告)日：2013-09-24

申请号：US12953219

申请日：2010-11-23

申请人： Ko-Yen Lee ,  Chia-Chieh Hung ,  Wei-Chuan Su

发明人： Ko-Yen Lee ,  Chia-Chieh Hung ,  Wei-Chuan Su

IPC分类号： G05F1/70 ,  G05F5/00

CPC分类号： H05B33/0809 ,  H02M1/4225 ,  H05B33/0815 ,  Y02B70/126

摘要： A power conversion controller having a novel power factor correction mechanism, including: a normalization unit, used to generate a normalized signal according to a line voltage by multiplying the line voltage with a normalizing gain, wherein the normalizing gain is proportional to the reciprocal of the amplitude of the line voltage; a reference current generation unit, coupled to the normalization unit to generate a reference current signal by performing an arithmetic operation, wherein the arithmetic operation involves the normalized signal; and a gate drive signal generation unit, used to generate a gate drive signal, wherein the duty of the gate drive signal is determined by a voltage comparison of the reference current signal and a current sensing signal.

摘要翻译： 一种具有新型功率因数校正机构的功率转换控制器，包括：归一化单元，用于根据线电压通过将线电压乘以归一化增益来产生归一化信号，其中归一化增益与 线电压幅值; 参考电流产生单元，其耦合到所述归一化单元，以通过执行算术运算来产生参考电流信号，其中所述算术运算涉及所述归一化信号; 以及用于产生栅极驱动信号的栅极驱动信号生成单元，其中栅极驱动信号的占空比由参考电流信号和电流感测信号的电压比较确定。

公开(公告)号：US08390357B2

公开(公告)日：2013-03-05

申请号：US13118208

申请日：2011-05-27

申请人： Chia-Chieh Hung ,  Yen-Hui Wang

发明人： Chia-Chieh Hung ,  Yen-Hui Wang

IPC分类号： G06F1/04

CPC分类号： H02M1/4208 ,  Y02B70/126 ,  Y02P80/112

摘要： A fixed dead time PFC controller, comprising: an amplitude normalization circuit, used to generate a normalized signal according to a full-wave rectified input voltage; a comparator circuit, used to compare the normalized signal with a threshold voltage to generate a select signal, wherein the select signal exhibits a first state when the normalized signal is higher than the threshold voltage, and a second state when the normalized signal is lower than the threshold voltage; and a driving signal selection circuit, having a first input end coupled to a first driving signal, a second input end coupled to a second driving signal, a control end coupled to the select signal, and an output end for outputting a gate driving signal.

摘要翻译： 一种固定死区PFC控制器，包括：振幅归一化电路，用于根据全波整流输入电压产生归一化信号; 比较器电路，用于将归一化信号与阈值电压进行比较以产生选择信号，其中当归一化信号高于阈值电压时，选择信号呈现第一状态，当归一化信号低于阈值电压时，第二状态 阈值电压; 以及驱动信号选择电路，其具有耦合到第一驱动信号的第一输入端，耦合到第二驱动信号的第二输入端，耦合到选择信号的控制端以及用于输出栅极驱动信号的输出端。