公开(公告)号：US20130215651A1

公开(公告)日：2013-08-22

申请号：US13765609

申请日：2013-02-12

Applicant: Chia-Wei Liao ,  Jing-Meng Liu

Inventor： Chia-Wei Liao ,  Jing-Meng Liu

IPC: H02M5/40

CPC classification number: H02M5/40 ,  H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

Abstract: The present invention discloses an isolated power converter circuit and a control method thereof. The isolated power converter circuit includes: a transformer circuit, a power switch circuit, an opto-coupler circuit, and a control circuit. The transformer circuit includes a first winding and a second winding. The power switch circuit is coupled to the transformer circuit to control it according to a driving signal. The opto-coupler circuit generates a feedback signal. The control circuit is coupled to the power switch circuit and the opto-coupler circuit, for generating the driving signal according to the feedback signal. The control circuit includes a distinguishing circuit for distinguishing a status of the feedback signal.

Abstract translation: 本发明公开了一种隔离电力转换电路及其控制方法。 隔离电力转换器电路包括：变压器电路，电源开关电路，光耦合器电路和控制电路。 变压器电路包括第一绕组和第二绕组。 功率开关电路耦合到变压器电路，以根据驱动信号进行控制。 光耦合器电路产生反馈信号。 控制电路耦合到功率开关电路和光耦合器电路，用于根据反馈信号产生驱动信号。 控制电路包括用于区分反馈信号的状态的区别电路。

公开(公告)号：US08450948B2

公开(公告)日：2013-05-28

申请号：US12977775

申请日：2010-12-23

Applicant: Pei-Cheng Huang ,  Jing-Meng Liu

Inventor： Pei-Cheng Huang ,  Jing-Meng Liu

IPC: G05F1/00

CPC classification number: H05B33/0845 ,  Y02B20/341

Abstract: By monitoring the temperature of an LED and the temperature of a controller chip for the LED, a thermal foldback control is employed to gradually decrease the driving current of the LED before the LED or the controller chip is over heated, so as to prevent an over temperature protection from being triggered to shutdown the controller chip to cause the LED to undesirably flicker.

Abstract translation: 通过监测LED的温度和LED的控制器芯片的温度，采用热折返控制来逐渐降低LED在LED或控制器芯片过热之前的驱动电流，以防止过度 温度保护不被触发以关闭控制器芯片，导致LED不期望地闪烁。

公开(公告)号：US08390242B2

公开(公告)日：2013-03-05

申请号：US12770080

申请日：2010-04-29

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H01M10/46

CPC classification number: G05F1/67 ,  H02J7/35 ,  Y02E10/566 ,  Y02E10/58 ,  Y10T307/50

Abstract: The present invention discloses an analog photovoltaic power circuit, comprising: a photovoltaic device group for receiving photo energy to generate an input voltage; a power stage circuit for converting the input voltage to an output voltage; an optimum voltage estimation circuit for receiving a predetermined voltage and estimating an optimum voltage according to a direction of variation of the input voltage and a direction of variation of the power generated by the photovoltaic device group; and an analog comparison and control circuit for comparing the optimum voltage with the input voltage, to thereby control the operation of the power stage circuit.

Abstract translation: 本发明公开了一种模拟光伏电力电路，包括：用于接收光能以产生输入电压的光伏器件组; 用于将输入电压转换为输出电压的功率级电路; 用于接收预定电压并根据输入电压的变化方向和由光伏器件组产生的电力的变化方向估计最佳电压的最佳电压估计电路; 以及用于将最佳电压与输入电压进行比较的模拟比较和控制电路，从而控制功率级电路的操作。

公开(公告)号：US08354820B2

公开(公告)日：2013-01-15

申请号：US12770094

申请日：2010-04-29

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H01M10/46

CPC classification number: G05F1/67 ,  H02J7/35 ,  Y02E10/566 ,  Y02E10/58 ,  Y10T307/50

Abstract: The present invention discloses an analog photovoltaic power circuit, comprising: a photovoltaic device group for receiving photo energy to generate an input voltage; a power stage circuit for converting the input voltage to an output voltage; an optimum voltage estimation circuit for receiving a predetermined voltage and estimating an optimum voltage according to a direction of variation of the input voltage and a direction of variation of the power generated by the photovoltaic device group; and an analog comparison and control circuit for comparing the optimum voltage with the input voltage, to thereby control the operation of the power stage circuit.

公开(公告)号：US20130002153A1

公开(公告)日：2013-01-03

申请号：US13175653

申请日：2011-07-01

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

CPC classification number: H05B33/086 ,  H05B33/0827

Abstract: The present invention discloses a multi-color light emitting device circuit, which includes: multiple light emitting device strings of different colors, a timing control circuit, a power regulator circuit, and preferably a dark feedback circuit. Each light emitting device string has multiple light emitting devices coupled in series. The number of the light emitting devices of each light emitting device string is determined by an operational voltage of the light emitting device, wherein at least two of the light emitting device strings have different numbers of the light emitting devices, such that voltage drops of the two light emitting device strings are closer to each other than in a case wherein the two light emitting device strings have the same number of the light emitting devices, and the response time of the light emitting device strings are increased.

Abstract translation: 本发明公开了一种多色发光器件电路，其包括：多种不同颜色的发光器件串，定时控制电路，功率调节电路，最好是暗反馈电路。 每个发光器件串具有串联耦合的多个发光器件。 每个发光器件串的发光器件的数量由发光器件的工作电压确定，其中至少两个发光器件串具有不同数量的发光器件，使得发光器件的电压降 两个发光器件串比两个发光器件串具有相同数量的发光器件的情况彼此更接近，并且发光器件串的响应时间增加。

公开(公告)号：US20120242238A1

公开(公告)日：2012-09-27

申请号：US13421733

申请日：2012-03-15

Applicant: Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

Inventor： Pei-Yuan Chen ,  Chia-Wei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

IPC: H05B37/02

CPC classification number: H05B33/0815

Abstract: The present invention discloses a light emitting device power supply circuit, a light emitting device driver circuit and a control method thereof. The light emitting device driver circuit is coupled to a tri-electrode AC switch (TRIAC) dimmer circuit, and it controls the brightness of a light emitting device circuit according a rectified dimming signal. The light emitting device driver circuit includes a power stage circuit and a light emitting device control circuit. The light emitting device control circuit generates a switch control signal. The power stage circuit operates at least one power switch thereof according to the switch control signal to generate a latching current for firing the TRIAC dimmer circuit, and the latching current is inputted to the light emitting device circuit.

Abstract translation: 本发明公开了一种发光装置电源电路，发光装置驱动电路及其控制方法。 发光器件驱动电路耦合到三极交流开关（TRIAC）调光电路，并根据整流调光信号控制发光器件电路的亮度。 发光器件驱动电路包括功率级电路和发光器件控制电路。 发光装置控制电路产生开关控制信号。 功率级电路根据开关控制信号操作其至少一个电源开关，以产生用于触发TRIAC调光电路的锁存电流，并且将锁存电流输入到发光器件电路。

公开(公告)号：US08222829B2

公开(公告)日：2012-07-17

申请号：US12799108

申请日：2010-04-19

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B41/38 ,  H05B37/02

CPC classification number: H02M3/33523 ,  H05B33/0815

Abstract: The present invention discloses a driver circuit and a method for driving a load circuit. The driver circuit includes: a primary side circuit receiving rectified AC power; a transformer coupled to the primary side circuit and converting a primary voltage to a secondary voltage which is supplied to a load circuit; and a secondary side circuit coupled to the transformer, the secondary side circuit detecting current flowing through the load circuit and feedback controlling the primary side circuit accordingly.

Abstract translation: 本发明公开了一种用于驱动负载电路的驱动电路和方法。 驱动电路包括：一次侧电路接收整流的交流电; 耦合到初级侧电路并将初级电压转换为提供给负载电路的次级电压的变压器; 以及耦合到变压器的次级侧电路，次级侧电路检测流过负载电路的电流并相应地控制初级侧电路的反馈。

公开(公告)号：US08217632B2

公开(公告)日：2012-07-10

申请号：US12658560

申请日：2010-02-05

Applicant: Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

Inventor： Jing-Meng Liu ,  Chia-Wei Liao ,  Heng Yun

IPC: G05F1/613 ,  G05F1/44

CPC classification number: H05B33/0818 ,  H02M3/1582

Abstract: The present invention discloses a synchronous driver circuit, comprising: an inductor having one end coupled to an input voltage; a first power transistor having one end coupled to the other end of the inductor and another end supplying an output voltage; a second power transistor having one end coupled to the other end of the inductor and another end coupled to ground; a control circuit for controlling the operation of the first and second power transistors; a gate driver coupled to the control circuit and having an output controlling the gate of the first power transistor; and a bootstrap capacitor having one end coupled to a voltage node and the other end coupled to the other end of the inductor, the voltage across the bootstrap capacitor being provided as the operational voltage of the gate driver.

Abstract translation: 本发明公开了一种同步驱动器电路，包括：电感器，其一端耦合到输入电压; 第一功率晶体管，其一端耦合到电感器的另一端，另一端提供输出电压; 第二功率晶体管，其一端耦合到电感器的另一端，另一端耦合到地; 用于控制第一和第二功率晶体管的操作的控制电路; 耦合到控制电路并具有控制第一功率晶体管的栅极的输出的栅极驱动器; 以及自耦电容器，其一端耦合到电压节点，另一端耦合到电感器的另一端，所述自举电容器两端的电压被提供为栅极驱动器的工作电压。

公开(公告)号：US20100308749A1

公开(公告)日：2010-12-09

申请号：US12788757

申请日：2010-05-27

Applicant: Jing-Meng Liu

Inventor： Jing-Meng Liu

IPC: H05B37/02

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  Y02B20/347

Abstract: The present invention discloses an AC power line controlled light emitting device dimming circuit and a method thereof. The AC power line controlled light emitting device dimming circuit includes: a light emitting device driver circuit for controlling current through a light emitting device, wherein the light emitting device is current-controlled; and a level adjustment circuit for detecting power-OFF of an AC power switch and generating a corresponding level adjustment signal which is transmitted to the light emitting device driver circuit to control the current through the light emitting device accordingly.

Abstract translation: 本发明公开了一种交流电力线控制发光装置调光电路及其方法。 AC电力线控制发光器件调光电路包括：发光器件驱动电路，用于控制通过发光器件的电流，其中发光器件是电流控制的; 以及电平调整电路，用于检测交流电源开关的断电并产生相应的电平调整信号，所述电平调整信号被传输到发光器件驱动电路，以相应地控制通过发光器件的电流。

公开(公告)号：US20100301761A1

公开(公告)日：2010-12-02

申请号：US12787599

申请日：2010-05-26

Applicant: Chiawei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

Inventor： Chiawei Liao ,  Jing-Meng Liu ,  Leng-Nien Hsiu

IPC: H05B37/02

CPC classification number: H05B33/0818 ,  Y02B20/346

Abstract: The present invention discloses a tail-less LED control circuit, which includes: a power supply stage having an output terminal which provides electrical power to an LED circuit; an output capacitor coupled to the output terminal; an LED driver circuit coupled to the power supply stage for controlling the power supply stage to provide the electrical power to the LED circuit, the LED driver circuit receiving a PWM dimming signal for adjusting brightness of the LED circuit; and a MOSFET switch coupled to the output capacitor in series, the MOSFET switch switching synchronously with the PWM dimming signal to alleviate LED afterglow, wherein the MOSFET switch includes a body diode having an anode-cathode direction against the discharge direction of the output capacitor.

Abstract translation: 本发明公开了一种无尾LED控制电路，其包括：具有向LED电路提供电力的输出端子的电源级; 耦合到所述输出端子的输出电容器; LED驱动器电路，其耦合到所述电源级，用于控制所述电源级以向所述LED电路提供电力，所述LED驱动器电路接收用于调节所述LED电路的亮度的PWM调光信号; 以及耦合到串联的输出电容器的MOSFET开关，MOSFET开关与PWM调光信号同步地切换以减轻LED余辉，其中MOSFET开关包括具有抵抗输出电容器的放电方向的阳极 - 阴极方向的体二极管。