DEVICE FOR CONTROLLING CURRENT OF LED
    21.
    发明申请
    DEVICE FOR CONTROLLING CURRENT OF LED 有权
    用于控制LED电流的装置

    公开(公告)号:US20120068619A1

    公开(公告)日:2012-03-22

    申请号:US13028618

    申请日:2011-02-16

    IPC分类号: H05B37/02

    摘要: Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.

    摘要翻译: 本发明公开了一种用于控制包括恒流发电机,电流镜和电流放大器的LED的电流的装置,所述装置控制LED的电流,包括:选择器,根据输入端输出L信号或H信号 控制信号; 以及通过并联连接至少一个开关单元形成的电流改变单元,所述开关单元包括晶体管和串联连接到所述晶体管的开关。 用于控制LED的电流的装置使用SEL输入来调节提供给电流放大器的电流而不会产生噪声,从而可以在不分开改变电阻器的情况下改变LED的电流。

    LED driving device
    23.
    发明授权
    LED driving device 有权
    LED驱动装置

    公开(公告)号:US08653749B2

    公开(公告)日:2014-02-18

    申请号:US13108535

    申请日:2011-05-16

    IPC分类号: H05B37/02

    CPC分类号: H05B33/0827 H05B33/0818

    摘要: Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels.

    摘要翻译: 本发明公开了一种用于驱动每个通道的多通道LED元件或LED阵列的发光二极管(LED)驱动装置,该LED驱动装置包括:驱动在每个通道中流动的电流的恒流驱动器; 以及最小电压选择器,其接收每个通道的电压电平并选择最小电压电平,从而将所选择的最小电压电平反馈给恒流驱动器,其中提高了在每个通道中流动的电流的匹配特性,并且集成电路 IC)芯片与现有技术的情况相比也降低,从而可以降低生产成本并满足芯片小型化的趋势,同时解决由于匹配引起的性能劣化问题 通道之间的电流。

    Light emitting diode driver
    24.
    发明授权
    Light emitting diode driver 有权
    发光二极管驱动器

    公开(公告)号:US08581515B2

    公开(公告)日:2013-11-12

    申请号:US13117691

    申请日:2011-05-27

    IPC分类号: H05B37/02 G05F1/00

    CPC分类号: H05B33/0815 Y02B20/346

    摘要: The present invention relates to a light emitting diode driver that integrates a light emitting diode control function and a power switching control function at a secondary side insulated from a primary side in a power supply circuit, without using a photo coupler to control power switching at the primary side.

    摘要翻译: 本发明涉及一种发光二极管驱动器,其在电源电路中将与发光二极管控制功能和电源开关控制功能集成在与初级侧绝缘的次级侧,而不使用光耦合器来控制电源切换 一级。

    Device for controlling current of LED
    25.
    发明授权
    Device for controlling current of LED 有权
    用于控制LED电流的装置

    公开(公告)号:US08525437B2

    公开(公告)日:2013-09-03

    申请号:US13028618

    申请日:2011-02-16

    IPC分类号: H05B37/02

    摘要: Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.

    摘要翻译: 本发明公开了一种用于控制包括恒流发电机,电流镜和电流放大器的LED的电流的装置,所述装置控制LED的电流,包括:选择器,根据输入端输出L信号或H信号 控制信号; 以及通过并联连接至少一个开关单元形成的电流改变单元,所述开关单元包括晶体管和串联连接到所述晶体管的开关。 用于控制LED的电流的装置使用SEL输入来调节提供给电流放大器的电流而不会产生噪声,从而可以在不分开改变电阻器的情况下改变LED的电流。

    Device and method for generating three mode signal
    26.
    发明授权
    Device and method for generating three mode signal 失效
    用于产生三模信号的装置和方法

    公开(公告)号:US08476938B2

    公开(公告)日:2013-07-02

    申请号:US13027689

    申请日:2011-02-15

    IPC分类号: H03K5/153

    摘要: The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.

    摘要翻译: 用于产生三个模式信号的装置包括:电压设置块,包括接收驱动电压,开路和地线的三个输入信号的输入端,并根据三个输入信号设置三个电压; 以及包括两个输出端子和从电压设定块接收三个电压的第二节点B的输出块,并且通过将输入电压与参考电压进行比较来输出三个组合信号,由此只有少数电阻器和放大器产生三个模式 信号以进一步减小芯片尺寸,并且由于噪声而不需要外部电源来解决现有技术的问题。

    DIMMING CONTROL DEVICE, LED DRIVING DEVICE, AND DIMMING CONTROL METHOD
    27.
    发明申请
    DIMMING CONTROL DEVICE, LED DRIVING DEVICE, AND DIMMING CONTROL METHOD 审中-公开
    调光控制装置,LED驱动装置和调光控制方法

    公开(公告)号:US20130033189A1

    公开(公告)日:2013-02-07

    申请号:US13418188

    申请日:2012-03-12

    IPC分类号: H05B37/02

    CPC分类号: H05B33/0845

    摘要: The present invention relates to a dimming control device, an LED driving device, and a dimming control method. In accordance with an embodiment of the present invention, a dimming control device including: a PWM signal generating unit for generating a PWM signal from a reference signal and an input voltage; a signal compensating unit for compensating the PWM signal output from the PWM signal generating unit using an internal clock signal; and a synchronization unit for synchronizing the compensated signal with an external clock signal to output a synchronized PWM control signal for dimming control is proposed. Further, an LED driving device and a dimming control method are proposed.

    摘要翻译: 本发明涉及调光控制装置,LED驱动装置和调光控制方法。 根据本发明的实施例,一种调光控制装置,包括:PWM信号产生单元,用于从参考信号和输入电压产生PWM信号; 信号补偿单元,用于使用内部时钟信号来补偿从PWM信号生成单元输出的PWM信号; 提出了一种同步单元,用于使补偿信号与外部时钟信号同步,以输出用于调光控制的同步PWM控制信号。 此外,提出了LED驱动装置和调光控制方法。

    Power factor correction circuit for correcting power factor
    29.
    发明授权
    Power factor correction circuit for correcting power factor 有权
    用于校正功率因数的功率因数校正电路

    公开(公告)号:US08791677B2

    公开(公告)日:2014-07-29

    申请号:US13162793

    申请日:2011-06-17

    IPC分类号: H02M3/156

    摘要: There is provided a power factor correction circuit capable of correcting a power factor of a power converting module through increasing an input current by switching a main switching element of a power converting module on the basis of a first reference wave having a slope based on a first signal and an error voltage, in particular, by limiting a switching frequency on the basis of a first reference wave having a slope based on a second signal lower than a first signal and an error voltage when the switching frequency of the main switching element increases because an input voltage of the power converting module is low.

    摘要翻译: 提供了一种功率因数校正电路,其能够通过增加输入电流来校正功率转换模块的功率因数,所述功率因数校正电路通过基于第一参考波来切换功率转换模块的主开关元件,所述第一基准波具有基于第一 信号和误差电压,特别是通过基于具有基于低于第一信号的第二信号的斜率的第一参考波和当主开关元件的开关频率增加时的误差电压来限制开关频率,因为 电力转换模块的输入电压低。

    LIGHT EMITTING DIODE DRIVING APPARATUS
    30.
    发明申请
    LIGHT EMITTING DIODE DRIVING APPARATUS 审中-公开
    发光二极管驱动装置

    公开(公告)号:US20130249424A1

    公开(公告)日:2013-09-26

    申请号:US13494497

    申请日:2012-06-12

    IPC分类号: H05B37/02

    CPC分类号: H05B33/0827 H05B33/0851

    摘要: There is provided a light emitting diode driving apparatus capable of uniformly controlling current balance between light emitting diode channels. The light emitting diode driving apparatus includes: an AC to DC converting unit converting input AC power into a preset DC driving power; a detecting unit detecting voltage drops generated in a plurality of respective light emitting diode channels each having a plurality of light emitting diodes performing a light emitting operation by receiving the DC driving power; a converting unit converting analog values detected from the detecting unit into digital values; and a driving unit differentially setting switching signal duty cycles in which a driving current is allowed to flow in the plurality of respective light emitting diode channels according to the digital values from the converting unit to drive the plurality of light emitting diode channels.

    摘要翻译: 提供了能够均匀地控制发光二极管通道之间的电流平衡的发光二极管驱动装置。 发光二极管驱动装置包括:将输入AC电力转换为预设的DC驱动电力的AC至DC转换单元; 检测单元,检测多个各自的发光二极管通道中产生的电压降,每个发光二极管通道具有通过接收直流驱动功率而执行发光操作的多个发光二极管; 转换单元,将从检测单元检测的模拟值转换为数字值; 以及驱动单元,根据来自转换单元的数字值,差分地设置允许驱动电流在多个相应的发光二极管通道中流动的开关信号占空比,以驱动多个发光二极管通道。