公开(公告)号：US07095631B2

公开(公告)日：2006-08-22

申请号：US11104480

申请日：2005-04-13

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H02M3/335

CPC分类号： H02M3/33576

摘要： A switching power converter for converting an AC power into a DC power. The converter includes a transformer, a charge storage unit, a synchronization signal generator, and a switch element. The transformer includes a primary side coil and a secondary side coil, and the primary side coil generates an induced voltage at the secondary side coil according to AC power. The charge storage unit charges according to the induced voltage and outputs a DC power. The synchronization signal generator generates a synchronization signal according to the induced voltage. The synchronization signal is the first value when the induced voltage is positive and is the second value when the induced voltage is negative. The switch element, serially connected to the secondary side coil and controlled by the synchronization signal, is turned on when the synchronization signal is the first value and is turned off when otherwise.

摘要翻译： 一种用于将AC电力转换为DC电力的开关电力转换器。 转换器包括变压器，电荷存储单元，同步信号发生器和开关元件。 变压器包括初级侧线圈和次级侧线圈，并且初级侧线圈根据AC电力在次级侧线圈处产生感应电压。 电荷存储单元根据感应电压进行充电并输出直流电力。 同步信号发生器根据感应电压产生同步信号。 当感应电压为正时，同步信号为第一个值，当感应电压为负时为同步信号。 当同步信号为第一值时，串联连接到次级侧线圈并由同步信号控制的开关元件导通，否则关闭。

公开(公告)号：US08013477B2

公开(公告)日：2011-09-06

申请号：US12512973

申请日：2009-07-30

申请人： Chin-Sheng Chueh ,  Po-Wen Wang ,  Chien-Kun Huang ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng

发明人： Chin-Sheng Chueh ,  Po-Wen Wang ,  Chien-Kun Huang ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng

IPC分类号： H01H9/54

CPC分类号： H02M3/33569 ,  H02M1/36 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/944

摘要： A power system having a power saving mechanism includes a voltage regulator, a power input module, and a switching signal generation unit. The voltage regulator performs a regulation operation on a first voltage for generating a second voltage. The power input module includes a transformer, a rectifying unit, a switch, and a switch control unit. The rectifying unit together with the transformer is put in use for converting an input voltage into the first voltage. The switch is employed to control a current flowing through the primary winding of the transformer. The switch control unit generates a control signal for controlling the switch according to a switching signal. The switching signal generation unit is utilized for generating the switching signal to disable the switch control unit during an energy transfer disable interval so as to decrease the first voltage from a first predetermined voltage to a second predetermined voltage.

摘要翻译： 具有省电机构的电力系统包括电压调节器，电力输入模块和开关信号生成单元。 电压调节器对第一电压执行调节操作以产生第二电压。 电源输入模块包括变压器，整流单元，开关和开关控制单元。 整流单元与变压器一起被用于将输入电压转换成第一电压。 该开关用于控制流过变压器初级绕组的电流。 开关控制单元根据开关信号产生用于控制开关的控制信号。 切换信号生成单元用于产生切换信号，以在能量传递禁止间隔期间禁止开关控制单元，以便将第一电压从第一预定电压降低到第二预定电压。

公开(公告)号：US07301788B1

公开(公告)日：2007-11-27

申请号：US11566239

申请日：2006-12-04

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H02H7/122

CPC分类号： H02M1/34 ,  H02M1/44 ,  H02M2001/0032 ,  Y02B70/16

摘要： A low acoustic noise solution for snubber circuits is utilized for relieving spike noise under a low-load mode of a snubber circuit, and for avoiding electromagnetic interference under a high-load mode of said snubber circuit. A power transform device utilizing the low acoustic solution includes a power source node, a switch node, a ground node, a transformer, a third switching unit, a first spike noise snubber circuit, a first switch unit, a second spike noise snubber circuit, and a second switch unit. When the power transform device is under the low-load mode, the first spike noise snubber circuit is used to absorb power discharged from the transformer so that spike noise is relived. When the power transform device is under the high-load mode, both the first and the second spike noise snubber circuits are used to absorb power so that electromagnetic interference is relieved.

摘要翻译： 用于缓冲电路的低噪声解决方案用于在缓冲电路的低负载模式下缓解尖峰噪声，并且用于在所述缓冲电路的高负载模式下避免电磁干扰。 利用低声解决方案的功率变换装置包括电源节点，开关节点，接地节点，变压器，第三开关单元，第一尖峰噪声缓冲电路，第一开关单元，第二尖峰噪声缓冲电路， 和第二开关单元。 当功率变换装置处于低负载模式时，第一尖峰噪声缓冲电路用于吸收从变压器放出的功率，以使尖峰噪声恢复。 当功率变换装置处于高负载模式时，第一和第二尖峰噪声缓冲电路均用于吸收功率，从而减轻电磁干扰。

公开(公告)号：US20100277957A1

公开(公告)日：2010-11-04

申请号：US12512973

申请日：2009-07-30

申请人： Chin-Sheng Chueh ,  Po-Wen Wang ,  Chien-Kun Huang ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng

发明人： Chin-Sheng Chueh ,  Po-Wen Wang ,  Chien-Kun Huang ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng

IPC分类号： H02M3/335

CPC分类号： H02M3/33569 ,  H02M1/36 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/944

摘要： A power system having a power saving mechanism includes a voltage regulator, a power input module, and a switching signal generation unit. The voltage regulator performs a regulation operation on a first voltage for generating a second voltage. The power input module includes a transformer, a rectifying unit, a switch, and a switch control unit. The rectifying unit together with the transformer is put in use for converting an input voltage into the first voltage. The switch is employed to control a current flowing through the primary winding of the transformer. The switch control unit generates a control signal for controlling the switch according to a switching signal. The switching signal generation unit is utilized for generating the switching signal to disable the switch control unit during an energy transfer disable interval so as to decrease the first voltage from a first predetermined voltage to a second predetermined voltage.

摘要翻译： 具有省电机构的电力系统包括电压调节器，电力输入模块和开关信号生成单元。 电压调节器对第一电压执行调节操作以产生第二电压。 电源输入模块包括变压器，整流单元，开关和开关控制单元。 整流单元与变压器一起被用于将输入电压转换成第一电压。 该开关用于控制流过变压器初级绕组的电流。 开关控制单元根据开关信号产生用于控制开关的控制信号。 切换信号生成单元用于产生切换信号，以在能量传递禁止间隔期间禁止开关控制单元，从而将第一电压从第一预定电压降低到第二预定电压。

公开(公告)号：US20070182345A1

公开(公告)日：2007-08-09

申请号：US11647117

申请日：2006-12-29

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H05B41/36

CPC分类号： H05B41/2821 ,  H05B41/282

摘要： A monitor and a power circuit thereof. The monitor includes a power circuit and a lamp. The power circuit driving the lamp to emit light includes an AC-to-DC converter, a transformer, a switch, a pulse width modulation (PWM) unit, a DC filter and a Royer circuit. The AC-to-DC converter receives a first AC voltage and generates a first DC voltage. The transformer has a secondary side coil for generating a second AC voltage, and a primary side coil, which has one end for receiving the first DC voltage and the other end coupled to a low potential through the switch. The PWM unit controls the switch to turn on to adjust the second AC voltage. The DC filter filters the second AC voltage into a second DC voltage. The Royer circuit generates a third AC voltage for driving the lamp to emit the light according to the second DC voltage.

摘要翻译： 监视器及其电源电路。 显示器包括电源电路和灯。 驱动灯发光的电源电路包括AC-DC转换器，变压器，开关，脉冲宽度调制（PWM）单元，DC滤波器和Royer电路。 AC-DC转换器接收第一AC电压并产生第一DC电压。 变压器具有用于产生第二AC电压的次级侧线圈和用于接收第一DC电压的一端和通过开关耦合到低电位的另一端的初级侧线圈。 PWM单元控制开关打开以调整第二个交流电压。 直流滤波器将第二交流电压滤波成第二直流电压。 Royer电路产生第三AC电压，用于驱动灯以根据第二DC电压发光。

公开(公告)号：US20070091660A1

公开(公告)日：2007-04-26

申请号：US11538450

申请日：2006-10-04

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H02M7/537

CPC分类号： H05B41/3927 ,  H05B41/2824

摘要： A monitor and a DC/AC converter thereof are provided. The monitor includes a lamp and a DC/AC converter. The DC/AC converter includes a pulse width modulation (PWM) unit, a DC/DC converting unit and a Royer circuit. The PWM unit is used for outputting a PWM signal whose pulse width is determined by a potential signal. The DC/DC converting unit receives and converts the first DC voltage to a second DC voltage whose potential is determined by the PWM signal. The Royer circuit generates an AC voltage to the lamp according to the second DC voltage. The DC/AC converter determines the potential of the AC voltage according to the potential signal. When the DC/AC converter operates in burst mode, the potential signal is alternated between a high potential and a low potential, such that the AC voltage outputted is in burst mode.

摘要翻译： 提供了一种监视器及其DC / AC转换器。 显示器包括一个灯和一个DC / AC转换器。 DC / AC转换器包括脉冲宽度调制（PWM）单元，DC / DC转换单元和Royer电路。 PWM单元用于输出脉冲宽度由电位信号决定的PWM信号。 DC / DC转换单元接收并转换第一DC电压至其电位由PWM信号确定的第二DC电压。 罗伊电路根据第二直流电压向灯产生交流电压。 DC / AC转换器根据电位信号确定交流电压的电位。 当DC / AC转换器以突发模式工作时，电位信号在高电位和低电位之间交替，使得输出的AC电压处于突发模式。

公开(公告)号：US20050231984A1

公开(公告)日：2005-10-20

申请号：US11104480

申请日：2005-04-13

申请人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

发明人： Po-Wen Wang ,  Chia-Tse Yeh ,  Chien-Kun Huang

IPC分类号： H02M3/335

CPC分类号： H02M3/33576

摘要： A switching power converter for converting an AC power into a DC power. The converter includes a transformer, a charge storage unit, a synchronization signal generator, and a switch element. The transformer includes a primary side coil and a secondary side coil, and the primary side coil generates an induced voltage at the secondary side coil according to AC power. The charge storage unit charges according to the induced voltage and outputs a DC power. The synchronization signal generator generates a synchronization signal according to the induced voltage. The synchronization signal is the first value when the induced voltage is positive and is the second value when the induced voltage is negative. The switch element, serially connected to the secondary side coil and controlled by the synchronization signal, is turned on when the synchronization signal is the first value and is turned off when otherwise.

摘要翻译： 一种用于将AC电力转换为DC电力的开关电力转换器。 转换器包括变压器，电荷存储单元，同步信号发生器和开关元件。 变压器包括初级侧线圈和次级侧线圈，并且初级侧线圈根据AC电力在次级侧线圈处产生感应电压。 电荷存储单元根据感应电压进行充电并输出直流电力。 同步信号发生器根据感应电压产生同步信号。 当感应电压为正时，同步信号为第一个值，当感应电压为负时为同步信号。 当同步信号为第一值时，串联连接到次级侧线圈并由同步信号控制的开关元件导通，否则关闭。

公开(公告)号：US20120327687A1

公开(公告)日：2012-12-27

申请号：US13527605

申请日：2012-06-20

申请人： Chin-Sheng Chueh ,  Sheng-Yao Hsu ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng ,  Po-Wen Wang

发明人： Chin-Sheng Chueh ,  Sheng-Yao Hsu ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng ,  Po-Wen Wang

IPC分类号： H02M7/42

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

摘要： A power adaptor includes an inverter, a feedback circuit, a detecting unit, and an adjusting unit. The inverter is configured to convert an input voltage into an output voltage according to a power conversion ratio and adjust the power conversion ratio according to a feedback voltage. The feedback circuit is configured to provide the feedback voltage by voltage-dividing the output voltage according to a specific ratio. The detecting unit is configured to detect a load of an output end of the power adaptor. The adjusting is configured to adjust the specific ratio according to the loading variation of the load.

摘要翻译： 电源适配器包括逆变器，反馈电路，检测单元和调整单元。 逆变器被配置为根据功率转换比将输入电压转换为输出电压，并根据反馈电压调整功率转换比。 反馈电路被配置为通过根据特定比例对输出电压进行分压来提供反馈电压。 检测单元被配置为检测电力适配器的输出端的负载。 该调整被配置为根据负载的负载变化来调整特定比例。

公开(公告)号：US09048736B2

公开(公告)日：2015-06-02

申请号：US13527605

申请日：2012-06-20

申请人： Chin-Sheng Chueh ,  Sheng-Yao Hsu ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng ,  Po-Wen Wang

发明人： Chin-Sheng Chueh ,  Sheng-Yao Hsu ,  Chia-Tse Yeh ,  Yung-Chun Lin ,  Jiun-Wei Tseng ,  Po-Wen Wang

IPC分类号： H02M3/335 ,  H02M1/00

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

摘要： A power adaptor includes an inverter, a feedback circuit, a detecting unit, and an adjusting unit. The inverter is configured to convert an input voltage into an output voltage according to a power conversion ratio and adjust the power conversion ratio according to a feedback voltage. The feedback circuit is configured to provide the feedback voltage by voltage-dividing the output voltage according to a specific ratio. The detecting unit is configured to detect a load of an output end of the power adaptor. The adjusting is configured to adjust the specific ratio according to the loading variation of the load.

摘要翻译： 电源适配器包括逆变器，反馈电路，检测单元和调整单元。 逆变器被配置为根据功率转换比将输入电压转换为输出电压，并根据反馈电压调整功率转换比。 反馈电路被配置为通过根据特定比例对输出电压进行分压来提供反馈电压。 检测单元被配置为检测电力适配器的输出端的负载。 该调整被配置为根据负载的负载变化来调整特定比例。

公开(公告)号：US08183792B2

公开(公告)日：2012-05-22

申请号：US12793688

申请日：2010-06-04

申请人： Yung-Chun Lin ,  Po-Wen Wang ,  Chin-Sheng Chueh ,  Jiun-Wei Tseng

发明人： Yung-Chun Lin ,  Po-Wen Wang ,  Chin-Sheng Chueh ,  Jiun-Wei Tseng

IPC分类号： G05F1/00

CPC分类号： H05B41/2855

摘要： In order to provide open-lamp protection to a backlight module, a pseudo open-lamp voltage is first generated according to the current flowing through a light source. If the backlight module receives a mode signal corresponding to a high contrast mode, a compensation voltage is added to the pseudo open-lamp voltage for generating a reference voltage. If the reference voltage is larger than a feedback voltage received from an input node of the light source, a driving voltage is outputted to the light source.

摘要翻译： 为了向背光模块提供开灯保护，首先根据流过光源的电流产生伪开路灯电压。 如果背光模块接收到对应于高对比度模式的模式信号，则将补偿电压加到用于产生参考电压的伪开路灯电压。 如果参考电压大于从光源的输入节点接收到的反馈电压，则将驱动电压输出到光源。