公开(公告)号：US09331575B2

公开(公告)日：2016-05-03

申请号：US14265372

申请日：2014-04-30

申请人： uPI Semiconductor Corp.

发明人： Ya-Ping Chen ,  Hung-Hsuan Cheng

IPC分类号： H02M3/158 ,  H02M1/00

CPC分类号： H02M3/158 ,  H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

摘要： A phase adjustment circuit of a power converter, the power converter, and a control method of the power converter are provided. The control method includes following steps. A delay signal is generated according to an error signal, and the error signal is associated with an output voltage of the power converter. A difference between the error signal and the delay signal is amplified. A control signal is provided according to the amplified difference and the error signal, and a phase of the control signal leads a phase of the error signal. The control signal serves to improve a response speed of the power converter.

摘要翻译： 提供功率转换器的相位调整电路，功率转换器和功率转换器的控制方法。 控制方法包括以下步骤。 根据误差信号产生延迟信号，误差信号与功率转换器的输出电压相关联。 误差信号和延迟信号之间的差异被放大。 根据放大的差和误差信号提供控制信号，并且控制信号的相位导致误差信号的相位。 控制信号用于提高功率转换器的响应速度。

公开(公告)号：US09269326B2

公开(公告)日：2016-02-23

申请号：US13784837

申请日：2013-03-05

申请人： uPI Semiconductor Corp.

发明人： Sheng-Chiun Lin

IPC分类号： G09G5/00 ,  G09G3/20

CPC分类号： G09G5/00 ,  G09G3/20 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/028

摘要： A voltage compensation circuit and an operation method thereof are provided. The voltage compensation circuit is suitable for a display device. The display device includes a direct-current voltage converter, a voltage level shifter, a panel, and a gate driving circuit. The voltage compensation circuit includes a voltage divider providing a divided voltage form a gate pulse signal, a comparing unit, a time counting unit and a processing unit. The comparing unit receives the divided voltage to provide at least one comparison result. The time counting unit provides a plurality of timing control signals at different time points according to the divided voltage. The processing unit provides a voltage reference signal to the direct-current voltage converter according to the plurality of timing control signals and the comparing result, and accordingly, the direct-current voltage converter adjusts an output voltage relating to the gate driving circuit.

摘要翻译： 提供电压补偿电路及其操作方法。 电压补偿电路适用于显示装置。 显示装置包括直流电压转换器，电压电平转换器，面板和栅极驱动电路。 电压补偿电路包括分压器，提供门脉冲信号的分压，比较单元，计时单元和处理单元。 比较单元接收分压以提供至少一个比较结果。 时间计数单元根据分压提供在不同时间点的多个定时控制信号。 处理单元根据多个定时控制信号和比较结果向直流电压转换器提供电压参考信号，因此直流电压转换器调节与栅极驱动电路相关的输出电压。

公开(公告)号：US09178417B2

公开(公告)日：2015-11-03

申请号：US14255964

申请日：2014-04-18

申请人： uPI Semiconductor Corp.

发明人： Hua-Chiang Huang

IPC分类号： H02M3/156 ,  H02M1/44 ,  H02M3/157 ,  H02M1/00

CPC分类号： H02M3/156 ,  H02M1/44 ,  H02M3/157 ,  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：US09030184B2

公开(公告)日：2015-05-12

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： G05F1/00 ,  H02M3/156

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：US20150077080A1

公开(公告)日：2015-03-19

申请号：US14265363

申请日：2014-04-30

申请人： uPI Semiconductor Corp.

发明人： Ya-Ping Chen

IPC分类号： H02M3/158

CPC分类号： H02M3/156 ,  H02M3/1588 ,  H02M2001/0025 ,  H02M2003/1566 ,  Y02B70/1466

摘要： A time signal generator and a time generating method used in a power converter are provided. The time generating method includes following steps. An error delay signal is generated according to an error signal, wherein the error signal is related to an output voltage of the power converter. A time signal is generated according to the error signal and the error delay signal. The time signal may serve to improve a response speed of the power converter.

摘要翻译： 提供了一种在功率转换器中使用的时间信号发生器和时间生成方法。 时间生成方法包括以下步骤。 根据误差信号产生误差延迟信号，其中误差信号与功率转换器的输出电压有关。 根据误差信号和误差延迟信号产生时间信号。 时间信号可以用于提高功率转换器的响应速度。

公开(公告)号：US20140340066A1

公开(公告)日：2014-11-20

申请号：US14251658

申请日：2014-04-14

申请人： uPI Semiconductor Corp.

发明人： Ya-Ping Chen ,  Wei-Ling Chen

IPC分类号： H02M3/156

CPC分类号： H02M3/156 ,  H02M3/1563 ,  H02M2003/1566

摘要： A timing generator for a power converter is provided. The timing generator includes a threshold voltage generation circuit and a timing generation unit. The threshold voltage generation circuit receives an error signal related to an output voltage of the power converter. The threshold voltage generation circuit generates a threshold voltage according to the error signal. The timing generation unit generates a timing signal according to the error signal, the threshold voltage and a control signal. The timing generation unit provides a tracking signal. A width of the timing signal depends on a time when tracking signal departed from a level of the error signal to a level of the threshold voltage. The present invention also provides a timing signal generation method for the power converter.

摘要翻译： 提供了一种用于功率转换器的定时发生器。 定时发生器包括阈值电压产生电路和定时产生单元。 阈值电压产生电路接收与功率转换器的输出电压相关的误差信号。 阈值电压产生电路根据误差信号产生阈值电压。 定时生成单元根据误差信号，阈值电压和控制信号生成定时信号。 定时生成单元提供跟踪信号。 定时信号的宽度取决于跟踪信号从误差信号的电平偏离到阈值电压的电平的时间。 本发明还提供了一种用于功率转换器的定时信号产生方法。

公开(公告)号：US20140340064A1

公开(公告)日：2014-11-20

申请号：US14272572

申请日：2014-05-08

申请人： uPI semiconductor corp.

发明人： Chih-Wen Hsiao ,  Chih-Lien Chang

IPC分类号： H02M3/158

CPC分类号： H02M3/156 ,  H02M3/157 ,  H02M2001/0012 ,  H02M2003/1566

摘要： A power converter is disclosed. The power converter includes a comparator and a timing generator. The comparator compares a first input signal with a second input signal to provide a control signal. The timing generator is coupled to the comparator. The timing generator includes a plurality of timing generating units, a logic unit, and a calculation unit. The timing generator generates a plurality of timing signals through the timing generating units and the logic unit according to the control signal, and the calculation unit forms a pulse width modulation (PWM) signal according to the timing signals. At least a part of the timing signals are overlapped.

摘要翻译： 公开了一种功率转换器。 功率转换器包括比较器和定时发生器。 比较器比较第一输入信号和第二输入信号以提供控制信号。 定时发生器耦合到比较器。 定时发生器包括多个定时生成单元，逻辑单元和计算单元。 定时发生器根据控制信号通过定时发生单元和逻辑单元生成多个定时信号，并且计算单元根据定时信号形成脉宽调制（PWM）信号。 定时信号的至少一部分重叠。

公开(公告)号：US08816657B2

公开(公告)日：2014-08-26

申请号：US13495965

申请日：2012-06-13

申请人： Han-Pang Wang

发明人： Han-Pang Wang

IPC分类号： G05F1/00 ,  H02M3/158

CPC分类号： H02M3/1584 ,  H02M2003/1586

摘要： A multi-phase DC-DC power converter including a pulse width modulation (PWM) controller and a plurality of output stage circuits is provided. The output stage circuits convert an input voltage into an output voltage. The PWM controller includes a PWM generation module, a ramp generator and a feedback circuit. The feedback circuit generates a trigger signal according to the output voltage and a ramp signal. The PWM generation module generates a PWM signal with a constant on time, and adjusts a duty cycle of the PWM signal according to the trigger signal, the input and output voltages, so as to control phase channels of the multi-phase DC-DC power converter in order.

摘要翻译： 提供了包括脉宽调制（PWM）控制器和多个输出级电路的多相DC-DC电力转换器。 输出级电路将输入电压转换为输出电压。 PWM控制器包括PWM生成模块，斜坡发生器和反馈电路。 反馈电路根据输出电压和斜坡信号产生触发信号。 PWM生成模块生成具有恒定导通时间的PWM信号，并根据触发信号（输入和输出电压）调整PWM信号的占空比，以控制多相DC-DC电源的相位通道 转换器。

公开(公告)号：US20140176091A1

公开(公告)日：2014-06-26

申请号：US13798171

申请日：2013-03-13

申请人： UPI SEMICONDUCTOR CORP.

发明人： Chu-Yi Chiang ,  Hua-Chiang Huang

IPC分类号： H02M3/04

CPC分类号： H02M3/158 ,  H02M3/1584 ,  H02M2003/1566

摘要： A DC-DC controller and a control method thereof are provided. The DC-DC controller is coupled to an output stage. The output stage receives an input voltage and provides an output voltage. The DC-DC controller includes a transient boost circuit, a ramp oscillator, a combination logic circuit, a first comparator and a pulse width modulation (PWM) generator. The transient boost circuit generates an adjusting signal according to a variation of the output voltage. The combination logic circuit controls the ramp oscillator to generate a ramp signal according to the adjusting signal. The first comparator generates a first signal according to the ramp signal and an outputted feedback voltage related to the output voltage. The PWM generator generates a PWM signal according to the first signal, so as to control the operations of the output stage.

摘要翻译： 提供DC-DC控制器及其控制方法。 DC-DC控制器耦合到输出级。 输出级接收输入电压并提供输出电压。 DC-DC控制器包括瞬态升压电路，斜坡振荡器，组合逻辑电路，第一比较器和脉冲宽度调制（PWM）发生器。 瞬态升压电路根据输出电压的变化产生调整信号。 组合逻辑电路控制斜坡振荡器，以根据调整信号产生斜坡信号。 第一比较器根据斜坡信号和与输出电压相关的输出反馈电压产生第一信号。 PWM发生器根据第一信号生成PWM信号，以控制输出级的操作。

公开(公告)号：US20140167716A1

公开(公告)日：2014-06-19

申请号：US14102574

申请日：2013-12-11

申请人： uPI semiconductor corp.

发明人： Wei-Ling Chen

IPC分类号： H02M3/158

CPC分类号： H02M3/156

摘要： A DC-DC converter including an output stage, a feedback loop, a pulse-width modulation (PWM) generating circuit, and a driving circuit is disclosed. The output stage is coupled to an input voltage and an output inductor to provide an output voltage. The feedback loop is coupled to the output inductor and receives the output voltage to generate a control signal. The PWM generating circuit is coupled to the feedback loop and receives the control signal. The PWM generating circuit also includes a timing signal generating unit which makes the PWM generating circuit to generate a PWM signal according to a correction voltage. The correction voltage is reacted in the output voltage and a first current source related to the input voltage.The driving circuit is coupled to the output stage and the PWM generating circuit and receives the PWM signal to control the operation of the output stage.

摘要翻译： 公开了一种包括输出级，反馈回路，脉冲宽度调制（PWM）发生电路和驱动电路的DC-DC转换器。 输出级耦合到输入电压和输出电感器以提供输出电压。 反馈环路耦合到输出电感器并接收输出电压以产生控制信号。 PWM产生电路耦合到反馈回路并接收控制信号。 PWM发生电路还包括定时信号生成单元，其使得PWM生成电路根据校正电压生成PWM信号。 校正电压在输出电压和与输入电压相关的第一电流源上反应。 驱动电路耦合到输出级和PWM发生电路，并接收PWM信号以控制输出级的操作。