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：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：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：US08129968B2

公开(公告)日：2012-03-06

申请号：US12707359

申请日：2010-02-17

申请人： Yen-Hui Wang ,  Wei-Chun Hsiao

发明人： Yen-Hui Wang ,  Wei-Chun Hsiao

IPC分类号： G05F1/40

CPC分类号： G06F1/26 ,  G06F1/28

摘要： The present invention discloses an integrated circuit for system calibration, applicable to a power supply, comprising: a comparison module, having a feedback input end coupled to a feedback signal and a reference input end coupled to an analog reference signal for delivering a status signal; a detection and control module, for generating a reference signal and a calibration value according to the status signal, wherein the calibration value is derived from the reference signal at an instant when the status signal changes state, and the calibration value is stored into a calibration value register; a memory module, for receiving, storing and outputting the calibration value; and a reference signal generator, receiving the calibration value to provide the analog reference signal. The present invention can therefore be used to automatically calibrate a system with fewer external components to provide qualified systems.

摘要翻译： 本发明公开了一种用于系统校准的集成电路，可应用于电源，包括：比较模块，其具有耦合到反馈信号的反馈输入端和耦合到用于传送状态信号的模拟参考信号的参考输入端; 检测和控制模块，用于根据状态信号产生参考信号和校准值，其中在状态信号改变状态的瞬间从参考信号导出校准值，并将校准值存储到校准 价值注册 存储模块，用于接收，存储和输出校准值; 以及参考信号发生器，接收校准值以提供模拟参考信号。 因此，本发明可用于自动校准具有较少外部组件的系统以提供合格的系统。

公开(公告)号：US20100289463A1

公开(公告)日：2010-11-18

申请号：US12464874

申请日：2009-05-13

申请人： Yen-Hui Wang ,  Chin-Yen Lin ,  Chia-Chieh Hung ,  Chi-Hao Wu

发明人： Yen-Hui Wang ,  Chin-Yen Lin ,  Chia-Chieh Hung ,  Chi-Hao Wu

IPC分类号： G05F1/625

CPC分类号： H02M3/33523

摘要： A primary-side feedback control device for a power converter includes a control unit, a comparator and a sample-and-hold unit. The control unit is utilized for generating a pulse signal according to a feedback signal for controlling on and off states of a switching transistor of the power converter. The comparator is coupled to an auxiliary winding of a primary side of the power converter, and is utilized for generating at least one control signal according to a voltage on the auxiliary winding. The sample-and-hold unit is coupled to the auxiliary winding, the comparator and the control unit, and is utilized for generating the feedback signal according to the voltage on the auxiliary winding and the at least one control signal.

摘要翻译： 用于功率转换器的初级侧反馈控制装置包括控制单元，比较器和采样保持单元。 控制单元用于根据用于控制功率转换器的开关晶体管的导通和截止状态的反馈信号产生脉冲信号。 比较器耦合到功率转换器的初级侧的辅助绕组，并用于根据辅助绕组上的电压产生至少一个控制信号。 采样保持单元耦合到辅助绕组，比较器和控制单元，并用于根据辅助绕组上的电压和至少一个控制信号产生反馈信号。

公开(公告)号：US20100237920A1

公开(公告)日：2010-09-23

申请号：US12406156

申请日：2009-03-18

申请人： Yen-Hui Wang ,  Chia-Chien Hung

发明人： Yen-Hui Wang ,  Chia-Chien Hung

IPC分类号： H03K7/08

CPC分类号： H03K7/08 ,  H03K4/02

摘要： The present invention discloses a peak magnetic flux regulation method for a power conversion via magnetic flux transformation through an inductive component, comprising the steps of: generating an adaptive reference voltage according to voltage comparison of a current sensing voltage and an expected peak voltage; and generating a PWM signal according to voltage comparison of said current sensing voltage and said adaptive reference voltage. Furthermore, the present invention also provides a peak magnetic flux regulation apparatus for a power conversion, and a system using the peak magnetic flux regulation apparatus for a power conversion.

摘要翻译： 本发明公开了一种通过电感元件进行磁通转换的功率转换的峰值磁通调节方法，包括以下步骤：根据电流检测电压和预期峰值电压的电压比较产生自适应参考电压; 以及根据所述电流感测电压和所述自适应参考电压的电压比较产生PWM信号。 此外，本发明还提供了一种用于电力转换的峰值磁通量调节装置，以及使用用于电力转换的峰值磁通量调节装置的系统。

公开(公告)号：US20100237837A1

公开(公告)日：2010-09-23

申请号：US12406145

申请日：2009-03-18

申请人： Yen-Hui Wang ,  Chia-Chien Hung ,  Chi-Hao Wu

发明人： Yen-Hui Wang ,  Chia-Chien Hung ,  Chi-Hao Wu

IPC分类号： G05F1/10

CPC分类号： H02M3/33507

摘要： The present invention discloses a minimum on-time reduction method for a switching power conversion, comprising the steps of: generating a first reset signal and an over-supply pulse signal according to a current sensing signal and a reference signal; generating a blanking signal according to a count number of the over-supply pulse signal; and generating a second reset signal by performing Logic-AND operation on the first reset signal and the blanking signal. Furthermore, the present invention also provides a minimum on-time reduction apparatus for a power conversion, and a system using the minimum on-time reduction apparatus for a power conversion.

摘要翻译： 本发明公开了一种开关电源转换的最小导通时间简化方法，包括以下步骤：根据电流检测信号和参考信号产生第一复位信号和过供电脉冲信号; 根据过供电脉冲信号的计数数生成消隐信号; 以及通过对第一复位信号和消隐信号执行逻辑与运算来产生第二复位信号。 此外，本发明还提供了一种用于电力转换的最小接通时间减少装置，以及使用最小导通时间减少装置进行电力转换的系统。

公开(公告)号：US20100149712A1

公开(公告)日：2010-06-17

申请号：US12336522

申请日：2008-12-16

申请人： Yen-Hui Wang ,  Chi-Hao Wu ,  Chia-Chieh Hung ,  Yu-Min Shih

发明人： Yen-Hui Wang ,  Chi-Hao Wu ,  Chia-Chieh Hung ,  Yu-Min Shih

IPC分类号： H02H3/08

CPC分类号： H02H7/1213 ,  H01H3/004 ,  H02M1/32 ,  H02M3/33515

摘要： A digital overcurrent protection device for a power supply device includes a receiving end for receiving a current sensing signal, a digital reference voltage generator for digitally generating a reference voltage, a comparator coupled between the receiving end and the digital reference voltage generator for comparing the current sense signal with the reference voltage in order to generate a comparison result, and a control unit coupled to the comparator for controlling a power switch of the power supply device according to the comparison result.

摘要翻译： 用于电源装置的数字过电流保护装置包括用于接收电流感测信号的接收端，用于数字产生参考电压的数字参考电压发生器，耦合在接收端与数字参考电压发生器之间的比较电流 具有参考电压的感测信号以产生比较结果，以及耦合到比较器的控制单元，用于根据比较结果控制电源装置的电源开关。

公开(公告)号：US20100123501A1

公开(公告)日：2010-05-20

申请号：US12273011

申请日：2008-11-18

申请人： Yen-Ping Wang ,  Yen-Hui Wang ,  Pei-Yuan Chen

发明人： Yen-Ping Wang ,  Yen-Hui Wang ,  Pei-Yuan Chen

IPC分类号： H03K3/35 ,  H03K3/289

CPC分类号： H03K5/1252 ,  H03K17/162

摘要： “An active-load dominant circuit for common-mode glitch interference cancellation, biased between a first voltage potential and a second voltage potential with an accompanying common-mode glitch interferer. The active-load dominant circuit includes a pair of pull-up networks and a pair of active-load networks. The common-mode glitch interferer is cancelled out due to a symmetric structure of the pair of pull-up networks. At least one set signal and at least one reset signal are provided to a latch in response to a clock signal or a complemented clock signal. At least one of the set signal and the reset signal can be pulled up to the first voltage potential or pulled down to the second voltage potential. The voltage difference of the set signal and the reset signal is large enough for a latch.”

摘要翻译： “用于共模故障干扰消除的有源负载主导电路，其在第一电压电位和第二电压电位之间被偏置，并具有伴随的共模故障干扰源。 有源负载主导电路包括一对上拉网络和一对有源负载网络。 由于一对上拉网络的对称结构，共模干扰信号被抵消。 至少一个设置信号和至少一个复位信号响应于时钟信号或补码时钟信号提供给锁存器。 设定信号和复位信号中的至少一个可以被上拉至第一电压电位或下拉至第二电压电位。 设定信号和复位信号的电压差对于锁存器来说足够大。

公开(公告)号：US06710323B2

公开(公告)日：2004-03-23

申请号：US10152636

申请日：2002-05-23

申请人： Yen-Hui Wang

发明人： Yen-Hui Wang

IPC分类号： H01J4014

CPC分类号： G06F3/0383 ,  G06F3/03543

摘要： An optical signal detection apparatus and method for a computer mouse compares two output signals of a first photo-transistor and a second photo-transistor to obtain a reference signal. Then a pulse signal generating unit utilizes the reference signal to generate a series of pulse signals each occurring when the voltage level of the reference signal is changed. Thereafter a sample and hold circuit samples and holds the voltage value of the output signals of the photo-transistors at the moments that pulse signals are generated. A dynamic reference voltage generating unit uses the sampled voltage values to calculate a dynamic reference voltage. The voltage level of the dynamic reference voltage is varied with the output signals of the photo-transistors. By using the dynamic reference voltage to compare with the output signals of the photo-transistors, the on/off statuses of the photo-transistors can be precisely detected.

摘要翻译： 用于计算机鼠标的光信号检测装置和方法将第一光电晶体管和第二光电晶体管的两个输出信号进行比较以获得参考信号。 然后脉冲信号产生单元利用参考信号产生当参考信号的电压电平改变时出现的一系列脉冲信号。 此后，采样和保持电路在产生脉冲信号的时刻采样并保持光电晶体管的输出信号的电压值。 动态参考电压产生单元使用采样的电压值来计算动态参考电压。 动态参考电压的电压电平随光电晶体管的输出信号而变化。 通过使用动态参考电压与光电晶体管的输出信号进行比较，可以精确地检测光电晶体管的导通/截止状态。