公开(公告)号：US08836307B2

公开(公告)日：2014-09-16

申请号：US13038660

申请日：2011-03-02

Applicant: Yi-Cheng Wan ,  Jian-Rong Huang ,  Chien-Hui Wang ,  Cheng-Feng Chung

Inventor： Yi-Cheng Wan ,  Jian-Rong Huang ,  Chien-Hui Wang ,  Cheng-Feng Chung

IPC: G05F1/00 ,  H02M3/156

CPC classification number: H02M3/156

Abstract: In a PWM signal generation method of a voltage regulator, an output sense signal, a first ramp signal and a second ramp signal are provided. A first time point of the first ramp signal crossing with the output sense signal is used to determine a start point of an ON-time of a PWM signal, and a second time point of the second ramp signal crossing with the output sense signal is used to determine an end point of the ON-time of the PWM signal. Moreover, the first ramp signal is reset to a reference voltage at the first time point and then maintained at the reference voltage, and further ramps down starting from the end point of the ON-time. The second ramp signal ramps up starting from the start point of the ON-time, and then is reset to a preset voltage at the second time point.

Abstract translation: 在电压调节器的PWM信号生成方法中，提供输出检测信号，第一斜坡信号和第二斜坡信号。 使用与输出感测信号交叉的第一斜坡信号的第一时间点来确定PWM信号的导通时间的起始点，并且使用与输出感测信号交叉的第二斜坡信号的第二时间点 以确定PWM信号的接通时间的终点。 此外，第一斜坡信号在第一时间点被复位到参考电压，然后保持在参考电压，并且进一步从导通时间的终点开始下降。 第二斜坡信号从接通时间的起点开始上升，然后在第二时间点被复位到预设电压。

公开(公告)号：US20140226372A1

公开(公告)日：2014-08-14

申请号：US13869684

申请日：2013-04-24

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Chien Fu Tang ,  Isaac Y. Chen ,  Jiun Hung Pan ,  Yung Chih Lai ,  Jyun Che Ho

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/158 ,  H02M2001/0009

Abstract: A voltage converter circuit, includes: a power switch for generating a pulse-width-modulation (PWM) signal to drive a current load, wherein the PWM signal toggles between a first level and a second level; a sensing pin, receiving a first sensing signal when the PWM signal is at the first level, and receiving a second sensing signal when the PWM signal is at the second level; a parameter sampling and setting unit, having an input terminal coupling to the sensing pin, generating a default current or a default voltage on the sensing pin and sampling the second sensing signal to generate a sampling signal when the PWM signal is at the second level, and holding the sampling signal to set a parameter of the voltage converter circuit when the PWM signal is at the first level.

Abstract translation: 一种电压转换器电路，包括：用于产生脉宽调制（PWM）信号以驱动电流负载的电源开关，其中所述PWM信号在第一电平和第二电平之间切换; 感测引脚，当PWM信号处于第一电平时接收第一感测信号，以及当PWM信号处于第二电平时接收第二感测信号; 参数采样和设置单元，具有耦合到感测引脚的输入端，在感测引脚上产生默认电流或默认电压，并且在PWM信号处于第二电平时采样第二感测信号以产生采样信号， 并且当PWM信号处于第一电平时，保持采样信号以设置电压转换器电路的参数。

公开(公告)号：US08791678B2

公开(公告)日：2014-07-29

申请号：US13188867

申请日：2011-07-22

Applicant: Ting-Jung Tai ,  Chih-Hao Yang ,  An-Tung Chen

Inventor： Ting-Jung Tai ,  Chih-Hao Yang ,  An-Tung Chen

IPC: H02M3/156

CPC classification number: H02M3/156

Abstract: A control circuit of a switching DC-DC power supply includes a feedback circuit detecting an output voltage of the power supply to generate a feedback signal, an error comparator detecting an error between the output voltage and a design value of the output voltage, a control logic circuit generating a control signal according to the error for regulating the output voltage, and an offset and delay cancellation circuit generating an offset adjust signal according to the feedback signal and a second reference voltage for adjusting an offset of the error comparator to pull the output voltage toward the design value.

Abstract translation: 开关DC-DC电源的控制电路包括检测电源的输出电压以产生反馈信号的反馈电路，检测输出电压与输出电压的设计值之间的误差的误差比较器，控制 逻辑电路根据用于调节输出电压的误差产生控制信号，以及偏移和延迟消除电路，根据反馈信号产生偏移调整信号，第二参考电压用于调整误差比较器的偏移量以将输出 电压达到设计值。

公开(公告)号：US08723560B2

公开(公告)日：2014-05-13

申请号：US13665631

申请日：2012-10-31

Applicant: Ricktek Technology Corp.

Inventor： Pei-Kai Tseng ,  Chien-Fu Tang ,  Issac Y. Chen ,  Jyun-Che Ho

IPC: H03K3/00 ,  H05B41/298 ,  H02M1/38

CPC classification number: H02M1/38 ,  G01R19/0084 ,  G01R31/40 ,  H03K5/1536 ,  H05B41/2981

Abstract: A high voltage H-bridge driver circuit has a high voltage terminal and a floating node to be connected with a high side switch therebetween. When turning on the high side switch, a high voltage offset detection circuit detects a voltage related to the voltage at the floating node for triggering a zero voltage switching signal.

Abstract translation: 高电压H桥驱动器电路具有高电压端子和浮动节点，以与它们之间的高侧开关连接。 当开启高压侧开关时，高压偏移检测电路检测与浮动节点处的电压相关的电压，以触发零电压切换信号。

公开(公告)号：US08723552B2

公开(公告)日：2014-05-13

申请号：US13413325

申请日：2012-03-06

Applicant: Pei-Kai Tseng ,  Chien-Fu Tang ,  Kuang-Feng Li ,  Isaac Y. Chen

Inventor： Pei-Kai Tseng ,  Chien-Fu Tang ,  Kuang-Feng Li ,  Isaac Y. Chen

IPC: H03K19/0175 ,  G05F1/00

CPC classification number: H03K19/018507 ,  H03K19/00361

Abstract: A floating gate driver circuit includes a level shifter, a pass element, a bistable circuit and a control logic circuit, to shift the voltage level of a control signal from a lower one to a higher one. The level shifter or the pass element has loads dynamically controlled by the control logic circuit to filter malfunction caused by dv/dt noise induced by a floating node.

Abstract translation: 浮置栅极驱动器电路包括电平移位器，通过元件，双稳态电路和控制逻辑电路，以将控制信号的电压电平从较低的一个移动到较高的一个。 电平移位器或通过元件具有由控制逻辑电路动态控制的负载，以过滤由浮动节点引起的dv / dt噪声引起的故障。

公开(公告)号：US08698548B2

公开(公告)日：2014-04-15

申请号：US13867662

申请日：2013-04-22

Applicant: Richtek Technology Corp.

Inventor： Hung-Shou Nien ,  Chung-Sheng Cheng

IPC: H01L35/00

CPC classification number: H03K3/011 ,  H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

Abstract: For thermal compensation for an intrinsic element in a system, a circuit and method are proposed to predict the temperature variation caused by power loss of the intrinsic element, in addition to sense the external environment temperature variation of the intrinsic element, and thus sense the operational temperature of the intrinsic element more precisely.

Abstract translation: 对于系统中本征元件的热补偿，提出了一种电路和方法来预测由本征元件的功率损耗引起的温度变化，以及感测本征元件的外部环境温度变化，从而感知操作 内在元素的温度更精确。

公开(公告)号：US08698449B2

公开(公告)日：2014-04-15

申请号：US12856837

申请日：2010-08-16

Applicant: Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Ying-Hsin Hsing

Inventor： Li-Wei Lee ,  Nien-Hui Kung ,  Kwan-Jen Chu ,  Ying-Hsin Hsing

IPC: H02J7/00

CPC classification number: H02J7/0077 ,  H02J2007/0062 ,  Y10T307/50

Abstract: A charger for a portable device includes a USB detector connected to a data pin to detect the effective resistance on the data pin before a USB transceiver is enabled, to identify USB or adapter plug in and control a charging current for a battery accordingly.

Abstract translation: 用于便携式设备的充电器包括连接到数据引脚的USB检测器，以在USB收发器使能之前检测数据引脚上的有效电阻，以识别USB或适配器插头，并相应地控制电池的充电电流。

公开(公告)号：US08593122B2

公开(公告)日：2013-11-26

申请号：US12720034

申请日：2010-03-09

Applicant: Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

Inventor： Ke-Horng Chen ,  Wei-Quan Wu ,  Hsin-Hsin Ho

IPC: G05F1/00

CPC classification number: H02M3/1582

Abstract: A buck-boost power converter switches the switches thereof with a novel sequence and extends the switching periods of the switches to reduce the switching loss and conduction loss when the input voltage thereof approaches the output voltage thereof. The influence of the load current of the power converter on the duty thereof is taken into account to switch the power converter between modes at correct time points, so as to prevent the output voltage from being affected by the mode switching.

Abstract translation: 降压 - 升压功率转换器以新颖的顺序切换其开关，并延长开关的开关周期，以在其输入电压接近其输出电压时降低开关损耗和导通损耗。 考虑到功率转换器的负载电流对其占空比的影响，以在正确的时间点在模式之间切换功率转换器，以防止输出电压受模式切换的影响。

公开(公告)号：US08531165B2

公开(公告)日：2013-09-10

申请号：US12720030

申请日：2010-03-09

Applicant: Ke-Horng Chen ,  Ming-Hsin Huang

Inventor： Ke-Horng Chen ,  Ming-Hsin Huang

IPC: G05F1/40

CPC classification number: H02M3/158 ,  H02M2001/009

Abstract: A single-inductor multiple-output power converter includes an inductor having a first terminal and a second terminal. The first terminal of the inductor is coupled to a power input terminal, and the second terminal of the inductor is switched to either of the first terminal of the inductor, multiple power output terminals, and a ground terminal. By switching the second terminal of the inductor between the first terminal of the inductor, the power output terminals, and the ground terminal, the power converter may provide multiple output voltages at the power output terminals respectively, in a less loss and thereby higher efficiency manner.

Abstract translation: 单电感器多输出功率转换器包括具有第一端子和第二端子的电感器。 电感器的第一端子耦合到电源输入端子，电感器的第二端子切换到电感器的第一端子，多个功率输出端子和接地端子。 通过在电感器的第一端子，功率输出端子和接地端子之间切换电感器的第二端子，功率转换器可以以较少的损耗分别在功率输出端子处提供多个输出电压，从而以更高的效率方式 。

公开(公告)号：US20130162359A1

公开(公告)日：2013-06-27

申请号：US13772628

申请日：2013-02-21

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： CHIEN-FU TANG ,  ISAAC Y. CHEN

IPC: H03B29/00

CPC classification number: H03K3/84 ,  G06F1/04 ,  H02M1/44 ,  H03B29/00 ,  H03K17/16

Abstract: An oscillator generates a clock signal according to a voltage, a current and a capacitance, and a frequency jitter circuit and method use a random number to modulate the voltage, the current or the capacitance, or a count value to modulate the capacitance, to jitter the frequency of the clock signal.