公开(公告)号：US08283905B2

公开(公告)日：2012-10-09

申请号：US12629027

申请日：2009-12-01

申请人： Chun-Hung Chang ,  Te-Hsien Liu ,  Jiun-Chiang Chen

发明人： Chun-Hung Chang ,  Te-Hsien Liu ,  Jiun-Chiang Chen

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M2001/0019 ,  H02M2001/0045

摘要： A voltage converter for converting an input voltage into an output voltage, wherein the output voltage is output to a load, is provided. An inductor is coupled between an output terminal and a node. A transistor is coupled between an input terminal and the node. A pulse width modulation (PWM) controller generates a first control signal according to the output voltage and a first reference voltage. An amplifier generates a second control signal according to the output voltage and a second reference voltage. A detector detects a loading of the load to generate a switching signal. A switching circuit selectively couples one of the PWM controller and the amplifier to the transistor according to the switching signal. The switching circuit controls the transistor according to the second control signal when the amplifier is coupled to the transistor, such that the transistor is operated in a saturation region.

摘要翻译： 一种用于将输入电压转换为输出电压的电压转换器，其中输出电压被输出到负载。 电感器耦合在输出端子和节点之间。 晶体管耦合在输入端和节点之间。 脉冲宽度调制（PWM）控制器根据输出电压和第一参考电压产生第一控制信号。 放大器根据输出电压和第二参考电压产生第二控制信号。 检测器检测负载的负载以产生开关信号。 开关电路根据开关信号将PWM控制器和放大器中的一个选择性地耦合到晶体管。 当放大器耦合到晶体管时，开关电路根据第二控制信号控制晶体管，使得晶体管在饱和区域中工作。

公开(公告)号：US07446591B2

公开(公告)日：2008-11-04

申请号：US11822169

申请日：2007-07-03

申请人： Liang-Pin Tai ,  Jiun-Chiang Chen

发明人： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC分类号： H03K17/687

CPC分类号： H03K17/6871 ,  H03K17/693

摘要： A switching circuit uses multiple common-drain JFETs to serve as the low-side switches of the switching circuit, and each of the low-side JFET is coupled between a high-side switch and a power node. Since a JFET can endure high voltage at both drain side and source side, and has good heat dissipation capability at drain side, the drain of the low-side JFET is coupled to the power node to enhance the heat dissipation capability and accordingly, all the low-side JFETs are allowed to be packaged in a same package to reduce the PCB layout area.

摘要翻译： 开关电路使用多个公共漏极JFET作为开关电路的低侧开关，并且每个低侧JFET耦合在高侧开关和功率节点之间。 由于JFET可以在漏极侧和源极侧承受高电压，并且在漏极侧具有良好的散热能力，因此低边JFET的漏极耦合到电源节点以增强散热能力，因此， 低边JFET可以封装在相同的封装中，以减少PCB布局面积。

公开(公告)号：US20130200864A1

公开(公告)日：2013-08-08

申请号：US13615615

申请日：2012-09-14

申请人： Hua-Chiang Huang ,  Jiun-Chiang Chen ,  Wei-Ling Chen

发明人： Hua-Chiang Huang ,  Jiun-Chiang Chen ,  Wei-Ling Chen

IPC分类号： G05F1/46

CPC分类号： H02M3/156

摘要： A DC-DC converter and a voltage conversion method thereof are provided. The DC-DC converter includes an output unit, a control unit and a trigger unit. The output unit converts an input voltage into an output voltage. The control unit generates a control signal according to the input voltage, an output feedback voltage related to the output voltage and a reference voltage, so as to make the output unit generate the output voltage. The trigger unit generates a first trigger signal according to the control signal, the output feedback voltage and the reference voltage. When the output feedback voltage is less than the reference voltage by a preset voltage, the control unit controls the output unit to perform a voltage-regulating process to the output voltage in advance.

摘要翻译： 提供了DC-DC转换器及其电压转换方法。 DC-DC转换器包括输出单元，控制单元和触发单元。 输出单元将输入电压转换为输出电压。 控制单元根据输入电压产生控制信号，产生与输出电压相关的输出反馈电压和参考电压，以使输出单元产生输出电压。 触发单元根据控制信号，输出反馈电压和参考电压产生第一触发信号。 当输出反馈电压小于参考电压预设电压时，控制单元控制输出单元预先对输出电压进行电压调节处理。

公开(公告)号：US20120092047A1

公开(公告)日：2012-04-19

申请号：US13004036

申请日：2011-01-11

申请人： Jiun-Chiang Chen ,  Han-Pang Wang

发明人： Jiun-Chiang Chen ,  Han-Pang Wang

IPC分类号： H03L7/00

CPC分类号： H03K17/223 ,  H03K17/102 ,  H03K17/145 ,  H03K17/567

摘要： A power-on reset circuit including a voltage divider, a first transistor and a second transistor is provided. The voltage divider is electrically connected between a first source voltage and a first ground voltage, and generates a sensing voltage. A drain of the first transistor is electrically connected to a second source voltage, and a gate and a source of the first transistor are connected to each other. A conductive channel of the second transistor is the same with that of the first transistor, and a type of the second transistor is different from a type of the first transistor. Furthermore, a drain of the second transistor is electrically connected to the source of the first transistor. A gate of the second transistor receives the sensing voltage. A source of the second transistor is electrically connected to a second ground voltage.

摘要翻译： 提供了包括分压器，第一晶体管和第二晶体管的上电复位电路。 分压器电连接在第一源电压和第一接地电压之间，并产生感测电压。 第一晶体管的漏极电连接到第二源极电压，并且第一晶体管的栅极和源极彼此连接。 第二晶体管的导电沟道与第一晶体管的导电沟道相同，第二晶体管的类型与第一晶体管的类型不同。 此外，第二晶体管的漏极电连接到第一晶体管的源极。 第二晶体管的栅极接收感测电压。 第二晶体管的源极电连接到第二接地电压。

公开(公告)号：US20110127977A1

公开(公告)日：2011-06-02

申请号：US12629027

申请日：2009-12-01

申请人： Chun-Hung Chang ,  Te-Hsien Liu ,  Jiun-Chiang Chen

发明人： Chun-Hung Chang ,  Te-Hsien Liu ,  Jiun-Chiang Chen

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0019 ,  H02M2001/0045

摘要： A voltage converter for converting an input voltage into an output voltage, wherein the output voltage is output to a load, is provided. An inductor is coupled between an output terminal and a node. A transistor is coupled between an input terminal and the node. A pulse width modulation (PWM) controller generates a first control signal according to the output voltage and a first reference voltage. An amplifier generates a second control signal according to the output voltage and a second reference voltage. A detector detects a loading of the load to generate a switching signal. A switching circuit selectively couples one of the PWM controller and the amplifier to the transistor according to the switching signal. The switching circuit controls the transistor according to the second control signal when the amplifier is coupled to the transistor, such that the transistor is operated in a saturation region.

摘要翻译： 一种用于将输入电压转换为输出电压的电压转换器，其中输出电压被输出到负载。 电感器耦合在输出端子和节点之间。 晶体管耦合在输入端和节点之间。 脉冲宽度调制（PWM）控制器根据输出电压和第一参考电压产生第一控制信号。 放大器根据输出电压和第二参考电压产生第二控制信号。 检测器检测负载的负载以产生开关信号。 开关电路根据开关信号将PWM控制器和放大器中的一个选择性地耦合到晶体管。 当放大器耦合到晶体管时，开关电路根据第二控制信号控制晶体管，使得晶体管在饱和区域中工作。

公开(公告)号：US07701190B2

公开(公告)日：2010-04-20

申请号：US11657003

申请日：2007-01-24

申请人： Jiun-Chiang Chen ,  Liang-Pin Tai

发明人： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC分类号： G05F1/00

CPC分类号： H02M3/1584

摘要： For a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, a control circuit comprises a load transient detector to detect the output voltage to provide a quick response signal. In a load transient, the quick response signal triggers a quick transient response period to increase the operational frequency of the converter.

摘要翻译： 对于包括用于将输入电压转换为输出电压的多个通道的DC-DC转换器，控制电路包括检测输出电压以提供快速响应信号的负载瞬变检测器。 在负载瞬变中，快速响应信号触发快速的瞬态响应周期以增加转换器的工作频率。

公开(公告)号：US07474086B2

公开(公告)日：2009-01-06

申请号：US11583012

申请日：2006-10-19

申请人： Jiun-Chiang Chen ,  Liang-Pin Tai

发明人： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC分类号： G05F1/40 ,  G05F1/56 ,  G05F1/618

CPC分类号： H02M3/156 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control circuit and method are provided to generate a modulation signal to operate a power stage in a DC/DC PWM converter such that the DC/DC PWM converter is controlled to operate with high switching frequency in light load stead state, once load transient happens, it still operates with high switching frequency for good transient response, and in heavy load stead state, it is controlled to operate with low switching frequency for good efficiency.

摘要翻译： 提供控制电路和方法来产生调制信号以在DC / DC PWM转换器中操作功率级，使得DC / DC PWM转换器被控制为在轻负载状态下以高开关频率工作，一旦发生负载瞬变 ，它仍然以高开关频率运行，具有良好的瞬态响应，并且在重负载状态下，它被控制为以低开关频率工作以获得高效率。

公开(公告)号：US20070176581A1

公开(公告)日：2007-08-02

申请号：US11657003

申请日：2007-01-24

申请人： Jiun-Chiang Chen ,  Liang-Pin Tai

发明人： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC分类号： G05F1/00

CPC分类号： H02M3/1584

摘要： For a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, a control circuit comprises a load transient detector to detect the output voltage to provide a quick response signal. In a load transient, the quick response signal triggers a quick transient response period to increase the operational frequency of the converter.

摘要翻译： 对于包括用于将输入电压转换为输出电压的多个通道的DC-DC转换器，控制电路包括检测输出电压以提供快速响应信号的负载瞬变检测器。 在负载瞬变中，快速响应信号触发快速的瞬态响应周期以增加转换器的工作频率。

公开(公告)号：US20120126775A1

公开(公告)日：2012-05-24

申请号：US13022571

申请日：2011-02-07

申请人： Shih-Chieh Hung ,  Hua-Chiang Huang ,  Jiun-Chiang Chen

发明人： Shih-Chieh Hung ,  Hua-Chiang Huang ,  Jiun-Chiang Chen

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A switching power converter including an upper-bridge switch, a lower-bridge switch, an impedance circuit, a first control circuit, a second control circuit and a logic circuit is provided. The impedance circuit generates an output voltage and a sensing current according to a conductive state of the upper-bridge switch and the lower-bridge switch. The first control circuit generates a first pulse signal according to the output voltage. The second control circuit has a first mode and a second mode for generating a second pulse signal and a third pulse signal individually. Furthermore, the second control circuit uses different threshold values in different modes to determine whether to switch the mode thereof, so as to form a hysteretic effect in mode switching. The logic circuit controls the upper-bridge switch by the first pulse signal, and controls the lower-bridge switch by the second pulse signal or the third pulse signal.

摘要翻译： 提供一种包括上桥开关，下桥开关，阻抗电路，第一控制电路，第二控制电路和逻辑电路的开关电源转换器。 阻抗电路根据上桥开关和下桥开关的导通状态产生输出电压和感测电流。 第一控制电路根据输出电压产生第一脉冲信号。 第二控制电路具有分别产生第二脉冲信号和第三脉冲信号的第一模式和第二模式。 此外，第二控制电路使用不同模式的不同阈值来确定是否切换其模式，以便在模式切换中形成滞后效应。 逻辑电路通过第一脉冲信号控制上桥开关，并通过第二脉冲信号或第三脉冲信号控制下桥开关。

公开(公告)号：US07560917B2

公开(公告)日：2009-07-14

申请号：US11220561

申请日：2005-09-08

申请人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

发明人： Hsin-Hsin Ho ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Jiun-Chiang Chen

IPC分类号： G05F1/618

CPC分类号： H02M3/158 ,  H02M2001/0019

摘要： In a voltage regulator including an error amplifier to generate a first signal related to an output voltage of the voltage regulator, a current sense circuit to generate a second signal related to an inductor current of the voltage regulator, and a PWM comparator to generate a PWM signal in response to the first and second signals to regulate the output voltage, a current feed-through adaptive voltage position control comprises supplying ramp signal and offset signal to modify the PWM signal to thereby eliminate the offset of the output voltage.

摘要翻译： 在包括用于产生与电压调节器的输出电压相关的第一信号的误差放大器的电压调节器中，产生与电压调节器的电感器电流相关的第二信号的电流感测电路和用于产生PWM的PWM比较器 信号响应于第一和第二信号以调节输出电压，电流馈通自适应电压位置控制包括提供斜坡信号和偏移信号以修改PWM信号，从而消除输出电压的偏移。