公开(公告)号：US20120268011A1

公开(公告)日：2012-10-25

申请号：US13244653

申请日：2011-09-25

申请人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

发明人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.

摘要翻译： LED驱动电路包括第一和第二LED模块，第一和第二开关转换器，极值电压检测和选择电路，电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块，并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换，以响应于输出的检测结果点亮第一和第二LED模块。

公开(公告)号：US08446098B2

公开(公告)日：2013-05-21

申请号：US13244653

申请日：2011-09-25

申请人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

发明人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

IPC分类号： H05B41/16

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.

摘要翻译： LED驱动电路包括第一和第二LED模块，第一和第二开关转换器，极值电压检测和选择电路，电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块，并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换，以响应于输出的检测结果点亮第一和第二LED模块。

公开(公告)号：US08334661B2

公开(公告)日：2012-12-18

申请号：US12886504

申请日：2010-09-20

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

IPC分类号： G05F1/00

CPC分类号： H05B33/0815 ,  H05B33/0848

摘要： An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedback control circuit and a power converting circuit provided in an exemplary embodiment of the invention not only reduce the degree and the time of overshoot but also provide accurate and stable feedback control.

摘要翻译： 本发明的示例性实施例提供了用于反馈控制的反馈控制电路中的误差放大信号的初始值的集合，以便减少误差放大信号的时间和振幅。 因此，在本发明的示例性实施例中提供的反馈控制电路和功率转换电路不仅减小过冲的程度和时间，而且还提供准确和稳定的反馈控制。

公开(公告)号：US20120104967A1

公开(公告)日：2012-05-03

申请号：US13118557

申请日：2011-05-30

申请人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

发明人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

IPC分类号： H05B37/02 ,  H03K5/04

CPC分类号： H05B33/0824 ,  H05B33/0815

摘要： A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented.

摘要翻译： 提供了非线性负载驱动电路和用于控制转换电路以驱动非线性负载的控制器。 控制器包括反馈单元，脉冲宽度控制单元和过冲减少单元。 反馈单元根据表示流过非线性负载的负载电流的电流反馈信号产生反馈信号。 脉冲宽度控制单元根据反馈信号产生控制信号，以控制转换电路的功率输出。 当负载电流根据电流反馈信号从小于大于预定值变化时，过冲减少单元产生过冲减小信号。 脉冲宽度控制单元接收过冲减小信号并相应地减小控制信号的占空比。 由此，能够提高反馈控制的稳定性，防止对电路的损坏。

公开(公告)号：US20110279061A1

公开(公告)日：2011-11-17

申请号：US12886504

申请日：2010-09-20

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Xi Tu

IPC分类号： H05B41/36

CPC分类号： H05B33/0815 ,  H05B33/0848

摘要： An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedback control circuit and a power converting circuit provided in an exemplary embodiment of the invention not only reduce the degree and the time of overshoot but also provide accurate and stable feedback control.

摘要翻译： 本发明的示例性实施例提供了用于反馈控制的反馈控制电路中的误差放大信号的初始值的集合，以便减小误差放大信号的时间和振荡幅度。 因此，在本发明的示例性实施例中提供的反馈控制电路和功率转换电路不仅减小过冲的程度和时间，而且还提供准确和稳定的反馈控制。

公开(公告)号：US08558483B2

公开(公告)日：2013-10-15

申请号：US13118557

申请日：2011-05-30

申请人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

发明人： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Xi Tu

IPC分类号： H05B37/02

CPC分类号： H05B33/0824 ,  H05B33/0815

摘要： A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented.

摘要翻译： 提供了非线性负载驱动电路和用于控制转换电路以驱动非线性负载的控制器。 控制器包括反馈单元，脉冲宽度控制单元和过冲减少单元。 反馈单元根据表示流过非线性负载的负载电流的电流反馈信号产生反馈信号。 脉冲宽度控制单元根据反馈信号产生控制信号，以控制转换电路的功率输出。 当负载电流根据电流反馈信号从小于大于预定值变化时，过冲减少单元产生过冲减小信号。 脉冲宽度控制单元接收过冲减小信号并相应地减小控制信号的占空比。 由此，能够提高反馈控制的稳定性，防止对电路的损坏。

公开(公告)号：US09024611B2

公开(公告)日：2015-05-05

申请号：US13585811

申请日：2012-08-14

申请人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

发明人： Li-Min Lee ,  Quan Gan ,  Shian-Sung Shiu ,  Chung-Che Yu

IPC分类号： G05F1/10 ,  H02M3/156 ,  H02M1/32 ,  H01L21/00 ,  H02H3/10 ,  H02H7/122 ,  H02M3/158

CPC分类号： H02M3/156 ,  H01L21/00 ,  H02H3/10 ,  H02H7/1222 ,  H02H7/1227 ,  H02M1/32 ,  H02M3/158

摘要： A controller with a multi-function pin, adapted to control a converting circuit according to a control signal for converting an input voltage into an output voltage, is disclosed. The controller has the multi-function pin, an enable unit, an over-current detecting unit and a logic control unit. The enable unit is coupled to the multi-function pin for receiving an enable signal and activates the controller in response to the enable signal. The over-current detecting is coupled to the multi-function pin and determines an over-current value according to an over-current set resistance coupled between the multi-function pin and a voltage source. The over-current detecting unit generates an over-current protection signal according to the over-current value and a current flowing through the converting circuit. The logic control unit determines whether executing an over-current protection according to the over-current protection signal.

摘要翻译： 公开了一种具有多功能引脚的控制器，其适于根据用于将输入电压转换为输出电压的控制信号来控制转换电路。 控制器具有多功能引脚，使能单元，过流检测单元和逻辑控制单元。 使能单元耦合到多功能引脚，用于接收使能信号，并响应于使能信号激活控制器。 过电流检测耦合到多功能引脚，并根据耦合在多功能引脚和电压源之间的过电流设定电阻确定过电流值。 过流检测单元根据过电流值和流过转换电路的电流产生过电流保护信号。 逻辑控制单元根据过电流保护信号判定是否执行过电流保护。

公开(公告)号：US08552768B2

公开(公告)日：2013-10-08

申请号：US13244636

申请日：2011-09-25

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Si-Min Wu

IPC分类号： H03B1/00 ,  H03K3/00

CPC分类号： H02M1/38 ,  H02M3/156

摘要： A synchronous driving circuit in the arts may cause a short through pheromone when a duty cycle of a duty cycle control signal is too short. The present invention sets a delay time with a suitable period when the duty cycle of the duty cycle control signal is too short to avoid the short through phenomenon.

摘要翻译： 当占空比控制信号的占空比太短时，本技术中的同步驱动电路可能导致短路信息素。 本发明在占空比控制信号的占空比太短而避免短路现象时，以合适的周期设定延迟时间。

公开(公告)号：US08487599B2

公开(公告)日：2013-07-16

申请号：US12906137

申请日：2010-10-18

申请人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Ji-Ming Chen

发明人： Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu ,  Ji-Ming Chen

IPC分类号： G05F1/40

CPC分类号： G05F1/10

摘要： A de-glitch switching converting circuit and a controller thereof are provided. In the embodiment of the invention, the circuit can filter noises with high frequency by way of time judgment, so as to avoid the erroneous operation of the controller affecting the stability of the output voltage or the output current. Compared with the method of using low-pass filters with large capacitors to filter noises, highly increasing the cost of the circuit is unnecessary in the embodiment of the invention. The circuit in the embodiment of the invention also has the capability for filtering noises with high amplitudes. In addition, by setting suitable parameters, the circuit in the embodiment of the invention can also avoid affecting the transient response of the circuit while filtering noises.

摘要翻译： 提供去毛刺切换转换电路及其控制器。 在本发明的实施例中，电路可以通过时间判断过滤高频噪声，以避免控制器误操作，影响输出电压或输出电流的稳定性。 与使用具有大电容器的低通滤波器对噪声进行滤波的方法相比，在本发明的实施例中不需要大量增加电路的成本。 本发明实施例中的电路还具有以高幅度对噪声进行滤波的能力。 此外，通过设定适当的参数，本发明的实施例中的电路也可以避免在过滤噪声时影响电路的瞬态响应。

公开(公告)号：US08358084B2

公开(公告)日：2013-01-22

申请号：US12826699

申请日：2010-06-30

申请人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

发明人： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC分类号： H05B33/0887 ,  H05B33/0827 ,  H05B33/0866 ,  Y02B20/341

摘要： An LED current control circuit including a current adjusting unit, a detecting unit, and a current control unit is provided. The current adjusting unit has a current control end coupled to an LED string for determining an amount of current flowing through the LED string according to a current control signal. The detecting unit detects the current control end and determines whether to generate a protecting signal according to a protecting voltage value. The current control unit generates the current control signal to control the amount of current flowing through the LED string of and determines whether to stop the current flowing through the LED string according to the protecting signal.

摘要翻译： 提供了包括电流调节单元，检测单元和电流控制单元的LED电流控制电路。 电流调节单元具有耦合到LED串的电流控制端，用于根据电流控制信号确定流过LED串的电流量。 检测单元检测电流控制端，并根据保护电压值确定是否产生保护信号。 电流控制单元产生电流控制信号以控制流过LED串的电流量，并根据保护信号确定是否停止流经LED串的电流。