公开(公告)号：US08264184B2

公开(公告)日：2012-09-11

申请号：US12496204

申请日：2009-07-01

申请人： Yen-Hui Wang ,  Chang-Ling Sha ,  Ko-Ming Lin ,  Ko-Yen Lee

发明人： Yen-Hui Wang ,  Chang-Ling Sha ,  Ko-Ming Lin ,  Ko-Yen Lee

IPC分类号： H02P1/04

CPC分类号： G05D23/1917 ,  G06F1/206 ,  H05K7/20209

摘要： A low-pin count fan speed control system and a method thereof include primarily an activation unit to drive a fan to operate. When the fan starts completely, the fan slows down to a pre-determined rotation speed through an idle speed regulation unit. After achieving a pre-determined temperature through a temperature transition unit, the fan speed beings to increase from the idle speed. When the fan is operating, the rotation speed is properly increased in proportion to the temperature, using a positive temperature regulation slope unit. Therefore, through this method, the rotation speed will not be decreased by foreign objects when the fan is operating and a computer host can be provided with proper heat dissipation.

摘要翻译： 低引脚数风扇速度控制系统及其方法主要包括驱动风扇操作的激活单元。 当风扇完全启动时，风扇通过怠速调节单元减慢到预定的转速。 在通过温度转换单元达到预定温度后，风扇转速从空转速度增加。 当风扇运行时，使用正温度调节斜率单元，转速与温度成正比地增加。 因此，通过这种方法，当风扇运行并且计算机主机可以被提供适当的散热时，旋转速度将不会被异物减少。

公开(公告)号：US20110001445A1

公开(公告)日：2011-01-06

申请号：US12496204

申请日：2009-07-01

申请人： Yen-Hui WANG ,  Chang-Ling Sha ,  Ko-Ming Lin ,  Ko-Yen Lee

发明人： Yen-Hui WANG ,  Chang-Ling Sha ,  Ko-Ming Lin ,  Ko-Yen Lee

IPC分类号： G05D23/20 ,  H02P7/29

CPC分类号： G05D23/1917 ,  G06F1/206 ,  H05K7/20209

摘要： A low-pin count fan speed control system and a method thereof include primarily an activation unit to drive a fan to operate. When the fan starts completely, the fan slows down to a pre-determined rotation speed through an idle speed regulation unit. After achieving a pre-determined temperature through a temperature transition unit, the fan speed beings to increase from the idle speed. When the fan is operating, the rotation speed is properly increased in proportion to the temperature, using a positive temperature regulation slope unit. Therefore, through this method, the rotation speed will not be decreased by foreign objects when the fan is operating and a computer host can be provided with proper heat dissipation.

摘要翻译： 低引脚数风扇速度控制系统及其方法主要包括驱动风扇操作的激活单元。 当风扇完全启动时，风扇通过怠速调节单元减慢到预定的转速。 在通过温度转换单元达到预定温度后，风扇转速从空转速度增加。 当风扇运行时，使用正温度调节斜率单元，转速与温度成正比地增加。 因此，通过这种方法，当风扇运行并且计算机主机可以被提供适当的散热时，旋转速度将不会被异物减少。

公开(公告)号：US20110033174A1

公开(公告)日：2011-02-10

申请号：US12536701

申请日：2009-08-06

申请人： Ko-Yen Lee ,  Chang-Ling Sha

发明人： Ko-Yen Lee ,  Chang-Ling Sha

IPC分类号： G05F1/10

CPC分类号： H02P7/29

摘要： The present invention discloses a control circuit for a variable frequency DC motor, the control circuit comprising: a controller, having a voltage sensing input end and a control output end, wherein the control output end is used to deliver an output signal according to the difference between a threshold voltage and the voltage at the voltage sensing input end; a transistor, having a first terminal, a second terminal and a third terminal, wherein the first terminal is coupled to the voltage sensing input end, and the second terminal is coupled to the variable frequency DC motor, and the third terminal is coupled to a reference ground; and a voltage divider, coupled between the second terminal and the third terminal, used to generate a feedback voltage for the voltage sensing input end; wherein the voltage at the second terminal is regulated according to the threshold voltage.

摘要翻译： 本发明公开了一种用于变频直流电动机的控制电路，所述控制电路包括：具有电压感测输入端和控制输出端的控制器，其中所述控制输出端用于根据所述差异传送输出信号 在阈值电压和电压感测输入端之间的电压之间; 具有第一端子，第二端子和第三端子的晶体管，其中所述第一端子耦合到所述电压感测输入端，并且所述第二端子耦合到所述可变频率DC电动机，并且所述第三端子耦合到 参考地 以及耦合在所述第二端子和所述第三端子之间的用于产生所述电压感测输入端的反馈电压的分压器; 其中根据所述阈值电压调节所述第二端子处的电压。

公开(公告)号：US20110050308A1

公开(公告)日：2011-03-03

申请号：US12553398

申请日：2009-09-03

申请人： Jun-Shiung Huang ,  Chern-Lin Chen ,  Chang-Ling Sha ,  Ko-Yen Lee

发明人： Jun-Shiung Huang ,  Chern-Lin Chen ,  Chang-Ling Sha ,  Ko-Yen Lee

IPC分类号： H03K3/02

CPC分类号： H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

摘要： The present invention discloses a standby power reduction method and apparatus for switching power applications, the method comprising the steps of: performing a hysteresis comparison on a supply voltage to generate a selecting signal having a first state and a second state, wherein the hysteresis comparison has a high threshold voltage compared to the supply voltage when the selecting signal is at the first state, and the hysteresis comparison has a low threshold voltage compared to the supply voltage when the selecting signal is at the second state; and determining a UVLO_ON voltage according to the selecting signal, wherein the UVLO_ON voltage is equal to a first level when the selecting signal is at the first state, and the UVLO_ON voltage is equal to a second level when the selecting signal is at the second state.

摘要翻译： 本发明公开了一种用于切换电源应用的待机功率降低方法和装置，所述方法包括以下步骤：对电源电压执行滞后比较，以产生具有第一状态和第二状态的选择信号，其中滞后比较 当选择信号处于第一状态时与电源电压相比高的阈值电压，并且与选择信号处于第二状态时的电源电压相比，滞后比较具有低阈值电压; 以及根据选择信号确定UVLO_ON电压，其中当选择信号处于第一状态时，UVLO_ON电压等于第一电平，并且当选择信号处于第二状态时，UVLO_ON电压等于第二电平 。

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：US08253350B2

公开(公告)日：2012-08-28

申请号：US12560790

申请日：2009-09-16

申请人： Chia-Chien Hung ,  Yen-Hui Wang ,  Ko-Yen Lee

发明人： Chia-Chien Hung ,  Yen-Hui Wang ,  Ko-Yen Lee

IPC分类号： G05F1/00

CPC分类号： H05B33/0818 ,  Y02B20/346

摘要： The present invention discloses an open loop LED driving circuit, having a turn-on period and a turn-off period, the circuit comprising: a power stage, used to store a magnetic energy supplied from a voltage source during the turn-on period and deliver the magnetic energy to a set of LEDs during the turn-off period; and a control unit, having a turn-off period control terminal coupled to the voltage source, and a channel of which a first terminal is coupled to the power stage and a second terminal is coupled to a reference ground, wherein the channel is switched on at a time according to the voltage of the voltage source to determine the turn-off period.

摘要翻译： 本发明公开了一种开环LED驱动电路，具有导通周期和关断周期，该电路包括：功率级，用于存储在导通周期期间从电压源提供的磁能;以及 在关闭期间将磁能传递给一组LED; 以及控制单元，具有耦合到所述电压源的关断周期控制端，以及其第一端耦合到所述功率级的通道，以及第二端耦合到参考地，其中所述通道被接通 一次根据电压源的电压来确定关断周期。

公开(公告)号：US20110062886A1

公开(公告)日：2011-03-17

申请号：US12560790

申请日：2009-09-16

申请人： Chia-Chien HUNG ,  yen-Hui Wang ,  Ko-Yen Lee

发明人： Chia-Chien HUNG ,  yen-Hui Wang ,  Ko-Yen Lee

IPC分类号： H05B41/36

CPC分类号： H05B33/0818 ,  Y02B20/346

摘要： The present invention discloses an open loop LED driving circuit, having a turn-on period and a turn-off period, the circuit comprising: a power stage, used to store a magnetic energy supplied from a voltage source during the turn-on period and deliver the magnetic energy to a set of LEDs during the turn-off period; and a control unit, having a turn-off period control terminal coupled to the voltage source, and a channel of which a first terminal is coupled to the power stage and a second terminal is coupled to a reference ground, wherein the channel is switched on at a time according to the voltage of the voltage source to determine the turn-off period.

摘要翻译： 本发明公开了一种开环LED驱动电路，具有导通周期和关断周期，该电路包括：功率级，用于存储在导通周期期间从电压源提供的磁能;以及 在关闭期间将磁能传递给一组LED; 以及控制单元，具有耦合到所述电压源的关断周期控制端，以及其第一端耦合到所述功率级的通道，以及第二端耦合到参考地，其中所述通道被接通 一次根据电压源的电压来确定关断周期。

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：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。