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：US20090153110A1

公开(公告)日：2009-06-18

申请号：US12153769

申请日：2008-05-23

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/44 ,  G05F1/10

CPC分类号： H02M3/1584 ,  H02J1/102

摘要： A multi-phase DC-DC controller. The multi-phase DC-DC controller comprises converter channels, a channel control device and a power control device. Each converter channel comprises a switch device, a first output node and an inductor coupled between the switch device and the first output node. The channel control device generates adjusted pulse width modulation signals according to control signals of the converter channels to respectively control operation of the switch device in each converter channel. The power control device generates the control signals according to sensed currents in the converter channels so as to dynamically turn on or off each converter channel according to the sensed currents.

摘要翻译： 多相DC-DC控制器。 多相DC-DC控制器包括转换器通道，通道控制装置和功率控制装置。 每个转换器通道包括开关器件，第一输出节点和耦合在开关器件与第一输出节点之间的电感器。 信道控制装置根据转换器信道的控制信号生成调整后的脉宽调制信号，分别控制各转换器信道中的开关装置的动作。 功率控制装置根据转换器通道中的感测电流产生控制信号，以根据感测的电流动态地接通或关闭每个转换器通道。

公开(公告)号：US20090051335A1

公开(公告)日：2009-02-26

申请号：US12153126

申请日：2008-05-14

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/10

CPC分类号： H02M3/157 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

摘要： A multi-phase DC-DC converter is provided. A plurality of switching sets are coupled to an output, wherein each switching set includes a phase node. A plurality of inductors are separately coupled between the phase nodes and the output. A sense circuit has a plurality of sense units separately coupled to the phase nodes, each sensing a signal from the corresponding phase node and generating a sensing signal. A PWM generator includes a plurality of subtracting units, each subtracting a first signal from one of the sensing signals to generate a difference signal, wherein the first signal is generated by summing each of the sensing signals divided by a predetermined value except for the one of the sensing signals. The PWM generator generates a plurality of PWM signals to balance the currents of the inductors according to the difference signals.

摘要翻译： 提供多相DC-DC转换器。 多个开关组耦合到输出，其中每个开关组包括相位节点。 多个电感器分别耦合在相位节点和输出端之间。 感测电路具有分别耦合到相位节点的多个感测单元，每个感测单元感测来自相应相位节点的信号并产生感测信号。 PWM发生器包括多个减法单元，每个减法单元从感测信号之一中减去第一信号以产生差分信号，其中通过将每个感测信号除以除 感应信号。 PWM发生器产生多个PWM信号，以根据差分信号平衡电感器的电流。

公开(公告)号：US09000735B2

公开(公告)日：2015-04-07

申请号：US13615607

申请日：2012-09-14

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/652 ,  H02M3/156

CPC分类号： H02M3/156 ,  H02M2003/1566

摘要： A DC-DC controller and an operation method thereof are provided. The DC-DC controller is configured to connect an output stage. The DC-DC controller includes a pulse width modulation (PWM) calculation circuit, a load transient detection circuit, and an override time calculation circuit. The PWM calculation circuit provides a PWM signal to the output stage. The load transient detection circuit receives an input signal related to an output voltage of the output stage. The load transient detection circuit provides a control signal according to the input signal and a predetermined input signal. The override time calculation circuit provides an override control signal with a predetermined time to the PWM calculation circuit according to the control signal. The PWM calculation circuit adjusts a duty cycle of the PWM signal according to the override control signal.

摘要翻译： 提供DC-DC控制器及其操作方法。 DC-DC控制器被配置为连接输出级。 DC-DC控制器包括脉宽调制（PWM）计算电路，负载瞬变检测电路和超控时间计算电路。 PWM计算电路向输出级提供PWM信号。 负载瞬变检测电路接收与输出级的输出电压相关的输入信号。 负载瞬变检测电路根据输入信号和预定的输入信号提供控制信号。 超控时间计算电路根据控制信号向PWM计算电路提供具有预定时间的覆盖控制信号。 PWM计算电路根据覆盖控制信号调整PWM信号的占空比。

公开(公告)号：US08742745B2

公开(公告)日：2014-06-03

申请号：US13541667

申请日：2012-07-04

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M1/44 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/16

摘要： A DC-DC converter is provided. When a load of the DC-DC converter is too light, the DC-DC converter can raise a frequency of its PWM signal, and reduce a pulse width of the PWM signal, so as to avoid the frequency of the PWM signal falling into a frequency range that can heard by human's ear and maintain high conversion efficiency of the DC-DC converter.

摘要翻译： 提供DC-DC转换器。 当DC-DC转换器的负载太轻时，DC-DC转换器可以提高其PWM信号的频率，并减小PWM信号的脉冲宽度，以避免PWM信号的频率落入 频率范围可以听到人耳，并保持DC-DC转换器的高转换效率。

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：US08350545B2

公开(公告)日：2013-01-08

申请号：US12977004

申请日：2010-12-22

申请人： Hua-Chiang Huang ,  Chih-Lien Chang ,  Han-Pang Wang

发明人： Hua-Chiang Huang ,  Chih-Lien Chang ,  Han-Pang Wang

IPC分类号： G05F1/575 ,  G05F1/618

CPC分类号： H02M3/1584

摘要： A current balancer suitable for a multi-phase power converting device is provided. The current balancer includes an error detection unit and a plurality of pulse control units. Each of the pulse control units includes a current-to-voltage converter, a charging and discharging controller, a capacitor, and a comparator. The error detection unit detects a plurality of channel currents generated by the multi-phase power converting device, and generates a plurality of error currents by calculating. The charging and discharging controller provides a charging voltage or a discharging voltage according to a constant pulse-width modulation (PWM) signal. When the channel currents are balanced, the comparator generates a PWM signal with a constant duty cycle. When the channel currents are not balanced, an error voltage generated by the current-to-voltage converter is used to adjust a voltage level of the charging voltage or the discharging voltage, so that the PWM signal is varied correspondingly.

摘要翻译： 提供了适用于多相电力转换装置的电流平衡器。 目前的平衡器包括错误检测单元和多个脉冲控制单元。 每个脉冲控制单元包括电流 - 电压转换器，充电和放电控制器，电容器和比较器。 误差检测单元检测由多相功率转换装置产生的多个通道电流，并通过计算产生多个误差电流。 充放电控制器根据恒定脉冲宽度调制（PWM）信号提供充电电压或放电电压。 当通道电流平衡时，比较器产生具有恒定占空比的PWM信号。 当通道电流不平衡时，使用由电流 - 电压转换器产生的误差电压来调节充电电压或放电电压的电压电平，使得PWM信号相应地变化。

公开(公告)号：US20120049813A1

公开(公告)日：2012-03-01

申请号：US12977004

申请日：2010-12-22

申请人： Hua-Chiang Huang ,  Chih-Lien Chang ,  Han-Pang Wang

发明人： Hua-Chiang Huang ,  Chih-Lien Chang ,  Han-Pang Wang

IPC分类号： G05F1/46

CPC分类号： H02M3/1584

摘要： A current balancer suitable for a multi-phase power converting device is provided. The current balancer includes an error detection unit and a plurality of pulse control units. Each of the pulse control units includes a current-to-voltage converter, a charging and discharging controller, a capacitor, and a comparator. The error detection unit detects a plurality of channel currents generated by the multi-phase power converting device, and generates a plurality of error currents by calculating. The charging and discharging controller provides a charging voltage or a discharging voltage according to a constant pulse-width modulation (PWM) signal. When the channel currents are balanced, the comparator generates a PWM signal with a constant duty cycle. When the channel currents are not balanced, an error voltage generated by the current-to-voltage converter is used to adjust a voltage level of the charging voltage or the discharging voltage, so that the PWM signal is varied correspondingly.

摘要翻译： 提供了适用于多相电力转换装置的电流平衡器。 目前的平衡器包括错误检测单元和多个脉冲控制单元。 每个脉冲控制单元包括电流 - 电压转换器，充电和放电控制器，电容器和比较器。 误差检测单元检测由多相功率转换装置产生的多个通道电流，并通过计算产生多个误差电流。 充放电控制器根据恒定脉冲宽度调制（PWM）信号提供充电电压或放电电压。 当通道电流平衡时，比较器产生具有恒定占空比的PWM信号。 当通道电流不平衡时，使用由电流 - 电压转换器产生的误差电压来调节充电电压或放电电压的电压电平，使得PWM信号相应地变化。

公开(公告)号：US08058856B2

公开(公告)日：2011-11-15

申请号：US12153126

申请日：2008-05-14

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/59

CPC分类号： H02M3/157 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

摘要： A multi-phase DC-DC converter is provided. A plurality of switching sets are coupled to an output, wherein each switching set includes a phase node. A plurality of inductors are separately coupled between the phase nodes and the output. A sense circuit has a plurality of sense units separately coupled to the phase nodes, each sensing a signal from the corresponding phase node and generating a sensing signal. A PWM generator includes a plurality of subtracting units, each subtracting a first signal from one of the sensing signals to generate a difference signal, wherein the first signal is generated by summing each of the sensing signals divided by a predetermined value except for the one of the sensing signals. The PWM generator generates a plurality of PWM signals to balance the currents of the inductors according to the difference signals.

摘要翻译： 提供了多相DC-DC转换器。 多个开关组耦合到输出，其中每个开关组包括相位节点。 多个电感器分别耦合在相位节点和输出端之间。 感测电路具有分别耦合到相位节点的多个感测单元，每个感测单元感测来自相应相位节点的信号并产生感测信号。 PWM发生器包括多个减法单元，每个减法单元从感测信号之一中减去第一信号以产生差分信号，其中通过将每个感测信号除以除 感应信号。 PWM发生器产生多个PWM信号，以根据差分信号平衡电感器的电流。

公开(公告)号：US07923977B2

公开(公告)日：2011-04-12

申请号：US12149352

申请日：2008-04-30

申请人： Hua-Chiang Huang

发明人： Hua-Chiang Huang

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2003/1566 ,  Y02B70/16

摘要： A DC-DC converter used to convert an input voltage to an output voltage is disclosed. The DC-DC converter comprises a pulse-width-modulation (PWM) generator, a transient boost circuit, a logic circuit, a switching device, and a buck circuit. The pulse-width-modulation (PWM) generator generates a PWM signal according to the output voltage. The transient boost circuit generates an adjusting signal according to the variation of the output voltage. The logic circuit generates a switch signal according to the PWM signal and the adjusting signal. The switching signal is at a high level when the PWM signal or the adjusting signal is at the high level, and the switching signal is at a low level when the PWM signal and the adjusting signal are at the low level. The switching device converts the input voltage to a driving signal according to the switching signal. The buck circuit receives the driving signal to generate the output voltage.

摘要翻译： 公开了一种用于将输入电压转换为输出电压的DC-DC转换器。 DC-DC转换器包括脉冲宽度调制（PWM）发生器，瞬态升压电路，逻辑电路，开关器件和降压电路。 脉冲宽度调制（PWM）发生器根据输出电压产生PWM信号。 瞬态升压电路根据输出电压的变化产生调整信号。 逻辑电路根据PWM信号和调整信号产生开关信号。 当PWM信号或调整信号处于高电平时，开关信号处于高电平，当PWM信号和调整信号处于低电平时，开关信号处于低电平。 开关装置根据开关信号将输入电压转换为驱动信号。 降压电路接收驱动信号以产生输出电压。