公开(公告)号：US07911815B2

公开(公告)日：2011-03-22

申请号：US12346879

申请日：2008-12-31

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

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

IPC: H02M3/335

CPC classification number: H02M3/33523

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

Abstract translation: 用于功率转换器的初级侧反馈控制装置包括：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，耦合到初级侧的辅助绕组; 用于根据辅助绕组上的电压和参考电压产生至少一个控制信号的电源转换器侧，耦合到辅助绕组的采样和保持单元，比较器和控制单元，用于产生反馈信号 根据辅助绕组上的电压和至少一个控制信号，以及耦合到控制单元，比较器和采样保持单元的电压发生器，用于根据反馈信号产生参考电压。

公开(公告)号：US20100321957A1

公开(公告)日：2010-12-23

申请号：US12486302

申请日：2009-06-17

Applicant: Chang-Ling Sha ,  Ko-Ming Lin ,  Chi-Hao Wu ,  Huang-Chi Lin

Inventor： Chang-Ling Sha ,  Ko-Ming Lin ,  Chi-Hao Wu ,  Huang-Chi Lin

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

Abstract: The present invention discloses a standby power saving method for power module applications, comprising the steps of: generating a mode signal according to voltage comparison of a feedback signal and a threshold voltage, wherein the mode signal has a normal mode state and a standby mode state; generating a pulse signal according to the mode signal, wherein the pulse signal has a normal PWM mode responsive to the normal mode state of the mode signal, and a VCC mode responsive to the standby mode state of the mode signal; and generating a gating signal according to the pulse signal for driving a primary side power switch. The present invention also provides a standby power saving apparatus for power module applications.

Abstract translation: 本发明公开了一种用于功率模块应用的备用节能方法，包括以下步骤：根据反馈信号的电压比较产生模式信号和阈值电压，其中模式信号具有正常模式状态和待机模式状态 ; 根据模式信号产生脉冲信号，其中脉冲信号具有响应于模式信号的正常模式状态的正常PWM模式，以及响应于模式信号的待机模式状态的VCC模式; 以及根据用于驱动一次侧电源开关的脉冲信号产生选通信号。 本发明还提供了一种用于功率模块应用的备用节电装置。

公开(公告)号：US20100289463A1

公开(公告)日：2010-11-18

申请号：US12464874

申请日：2009-05-13

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

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

IPC: G05F1/625

CPC classification number: H02M3/33523

Abstract: 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.

Abstract translation: 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：US20100237837A1

公开(公告)日：2010-09-23

申请号：US12406145

申请日：2009-03-18

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

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

IPC: G05F1/10

CPC classification number: H02M3/33507

Abstract: 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.

Abstract translation: 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

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

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

IPC: H02H3/08

CPC classification number: H02H7/1213 ,  H01H3/004 ,  H02M1/32 ,  H02M3/33515

Abstract: 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.

Abstract translation: 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：US08058857B2

公开(公告)日：2011-11-15

申请号：US12360949

申请日：2009-01-28

Applicant: Chi-Hao Wu ,  Chern-Lin Chen

Inventor： Chi-Hao Wu ,  Chern-Lin Chen

IPC: G05F1/40

CPC classification number: H02M3/33515

Abstract: The present invention relates to a digitally controlled switched-mode power supply, wherein a switched-mode power supply is provided with a control circuit, which comprises a signal amplifier unit able to receive digital signals or analog signals and a switching controller able to receive the signals. The switching controller uses the signals to produce a clock signal, after which the clock signal is output, whereupon the signal amplifier unit feeds a signal back to control the switching controller. The signal amplifier unit is provided with at least one amplifier element, and when the amplifier element receives a digital signal or analog signal, then the signal is transmitted to the switching controller. Accordingly, the control circuit achieves the effectiveness to not only receive and transmit digital signals, but also receive and transmit analog signals, and is thus provided with the advantage of enormous flexibility.

Abstract translation: 本发明涉及一种数字控制的开关电源，其中开关模式电源具有控制电路，该控制电路包括能够接收数字信号或模拟信号的信号放大器单元，以及能够接收 信号。 开关控制器使用信号产生时钟信号，之后输出时钟信号，于是信号放大器单元向信号反馈信号以控制开关控制器。 信号放大器单元设置有至少一个放大器元件，并且当放大器元件接收数字信号或模拟信号时，该信号被发送到开关控制器。 因此，控制电路实现了不仅接收和发送数字信号而且还接收和发送模拟信号的有效性，并且因此具有巨大灵活性的优点。

公开(公告)号：US20090256545A1

公开(公告)日：2009-10-15

申请号：US12336537

申请日：2008-12-17

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

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

IPC: G05F5/00

CPC classification number: H02M3/33507

Abstract: A current-level controlling device for a power supply includes a reception end for receiving a current sense signal, a reference voltage generator for generating a reference voltage, an adaptive reference voltage generator, coupled to the reference voltage generator and the reception end, for adjusting the reference voltage according to variation of peak values of the current sense signal, so as to generate an adaptive reference voltage, a comparator, coupled to the reception end and the adaptive reference voltage generator, for comparing the current sense signal and the adaptive reference voltage, to generate a comparison result, and a control unit, coupled to the comparator, for controlling a switch transistor of the power supply according to the comparison result.

Abstract translation: 用于电源的电流电平控制装置包括用于接收电流感测信号的接收端，用于产生参考电压的参考电压发生器，耦合到参考电压发生器和接收端的自适应参考电压发生器，用于调整 根据电流检测信号的峰值的变化产生参考电压，以产生耦合到接收端和自适应参考电压发生器的自适应参考电压，比较器，用于比较电流检测信号和自适应参考电压 ，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的开关晶体管。

公开(公告)号：US20090256533A1

公开(公告)日：2009-10-15

申请号：US12338907

申请日：2008-12-18

Applicant: Chi-Hao Wu ,  Chia-Chieh Hung

Inventor： Chi-Hao Wu ,  Chia-Chieh Hung

IPC: G05F1/613

CPC classification number: H02M3/33507

Abstract: An current-level decision device for a power supply device includes a reception end for receiving a current sense signal, a reference voltage generator for generating a first reference voltage, a reference voltage correction unit coupled to the reference voltage generator and the reception end for adjusting the reference voltage according to variation of the current sense signal, so as to generate a second reference voltage, a comparator coupled to the reception end and the reference voltage correction unit for comparing the current sense signal and the second reference voltage to generate a comparison result, and a control unit coupled to the comparator for controlling a switch transistor of the power supply according to the comparison result.

Abstract translation: 用于电源装置的电流电平判定装置包括用于接收电流感测信号的接收端，用于产生第一参考电压的参考电压发生器，耦合到参考电压发生器的参考电压校正单元和用于调整的接收端 所述参考电压根据所述电流检测信号的变化，以产生第二参考电压，耦合到所述接收端的比较器和所述参考电压校正单元，用于比较所述电流检测信号和所述第二参考电压以产生比较结果 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的开关晶体管。

公开(公告)号：US20080122505A1

公开(公告)日：2008-05-29

申请号：US11514263

申请日：2006-09-01

Applicant: Chi-Hao Wu

Inventor： Chi-Hao Wu

IPC: H03L7/06

CPC classification number: H02M3/07

Abstract: The present invention discloses a charge-pump circuit capable of regulating voltage without any external voltage regulator, wherein an input-modifying circuit is installed between the voltage-input end and the charge-pump circuit and used to detect the variation of the output voltage of the charge-pump circuit and modify the voltage input to the charge-pump circuit via a negative feedback mechanism, and the output voltage is thus regulated and stabilized. Therefore, in the present invention, the input voltage does not change with the variation of loads, and the output voltage is not determined by the input voltage but by the input-modifying circuit.

Abstract translation: 本发明公开了一种能够在没有任何外部电压调节器的情况下调节电压的电荷泵电路，其中输入修正电路安装在电压输入端和电荷泵电路之间，用于检测输出电压的变化 电荷泵电路，并通过负反馈机构修改对电荷泵电路的输入电压，从而调节和稳定输出电压。 因此，在本发明中，输入电压不随着负载的变化而变化，输出电压不由输入电压决定，而是由输入修正电路决定。

公开(公告)号：US08305047B2

公开(公告)日：2012-11-06

申请号：US12566268

申请日：2009-09-24

Applicant: Chun-Liang Lin ,  Chi-Hao Wu ,  Ko-Ming Lin ,  Huang-Chi Lin ,  Chang-Ling Sha ,  Jun-Shiung Huang

Inventor： Chun-Liang Lin ,  Chi-Hao Wu ,  Ko-Ming Lin ,  Huang-Chi Lin ,  Chang-Ling Sha ,  Jun-Shiung Huang

IPC: H02J7/00

CPC classification number: H02M1/126 ,  H02M2001/322

Abstract: The present invention discloses a safety capacitor discharging method for AC-to-DC converters, wherein the AC-to-DC converters have a safety capacitor connected between two line voltages, the method comprising the steps of: detecting at least one line voltage to generate a line-off signal, wherein the line-off signal is at a first state when the peak voltage of the at least one line voltage is above a reference voltage, and the line-off signal is at a second state when the peak voltage of the at least one line voltage is below the reference voltage; and performing discharge of the safety capacitor by generating a conduction path between two plates of the safety capacitor when the line-off signal is at the second state. The present invention also provides a safety capacitor discharging apparatus for AC-to-DC converters.

Abstract translation: 本发明公开了一种用于AC-DC转换器的安全电容器放电方法，其中AC-DC转换器具有连接在两个线路电压之间的安全电容器，该方法包括以下步骤：检测至少一个线路电压以产生 线路断开信号，其中当所述至少一个线路电压的峰值电压高于参考电压时，所述线路关断信号处于第一状态，并且所述线路关断信号处于第二状态，当所述线路关断信号的峰值电压 所述至少一个线路电压低于所述参考电压; 并且当所述线路关断信号处于第二状态时，通过在所述安全电容器的两个板之间产生导电路径来执行所述安全电容器的放电。 本发明还提供一种用于AC-DC转换器的安全电容器放电装置。