Driver circuit for LED vehicle lamp
    1.
    发明授权
    Driver circuit for LED vehicle lamp 有权
    LED汽车灯驱动电路

    公开(公告)号:US07042165B2

    公开(公告)日:2006-05-09

    申请号:US10926674

    申请日:2004-08-26

    IPC分类号: H05B37/02 H01B37/00

    摘要: A first vehicle lamp driver circuit for a light emitting diode (LED) array, the LED array having a first string of four LEDs in series and a second string of four LEDs in series. A first LED driver drives the first LED string and a second LED driver drives the second LED string. In a STOP mode of operation, the current to both LED strings is controlled by the LED driver in series with the LED string. In a TAIL mode of operation, the current is provided to only one LED string via a series connected diode and resistor. When there is reduced input voltage, operation of the LED strings is provided by switching circuits that short-out one LED in each LED string. A second vehicle lamp driver circuit comprises a first LED string and a second LED string in series with a control switch having a feedback circuit for maintaining constant current regulation to control the sum of the current in each LED string and reduce switching noise.

    摘要翻译: 用于发光二极管(LED)阵列的第一车灯驱动器电路,所述LED阵列具有串联的四个LED的第一串和串联的四个LED的第二串。 第一LED驱动器驱动第一LED串,第二LED驱动器驱动第二LED串。 在STOP操作模式下,两个LED串的电流由与LED串串联的LED驱动器控制。 在TAIL操作模式下,电流仅通过串联连接的二极管和电阻器提供给一个LED串。 当输入电压降低时,通过在每个LED串中短路一个LED的开关电路来提供LED串的操作。 第二车灯驱动器电路包括与控制开关串联的第一LED串和第二LED串,所述控制开关具有用于保持恒定电流调节以控制每个LED串中的电流之和并降低开关噪声的反馈电路。

    High intensity discharge lamp ballast with anti-theft operating mode
    2.
    发明授权
    High intensity discharge lamp ballast with anti-theft operating mode 有权
    高强度放电灯镇流器具有防盗操作模式

    公开(公告)号:US07230349B2

    公开(公告)日:2007-06-12

    申请号:US11248730

    申请日:2005-10-12

    IPC分类号: H01H47/22 B60R25/10 B60Q1/02

    摘要: A high intensity discharge (HID) assembly comprises ballast circuits which includes a micro-controller, and an HID headlamp. In order to deter theft of the HID assembly from a vehicle, the micro-controller communicates with a vehicle computer, checks the VIN of the vehicle, and if the micro-controller does not recognize the VIN, causes the HID headlamp to operate in a flickering power output mode. The ballast circuits include a power control circuit, a lamp current regulator, a 400v regulator, a current sense circuit, a turn-on synchronization circuit, a shut down circuit, and a pulse width modulator.

    摘要翻译: 高强度放电(HID)组件包括镇流器电路,其包括微控制器和HID前照灯。 为了防止HID组件从车辆被盗窃,微控制器与车辆计算机进行通信,检查车辆的VIN,并且如果微控制器不识别VIN,则使HID前照灯在 闪烁电源输出模式。 镇流器电路包括功率控制电路,灯电流调节器,400v调节器,电流检测电路,导通同步电路,关断电路和脉冲宽度调制器。

    High intensity discharge lamp with current sense resistor
    3.
    发明授权
    High intensity discharge lamp with current sense resistor 有权
    高强度放电灯,带电流检测电阻

    公开(公告)号:US07211965B2

    公开(公告)日:2007-05-01

    申请号:US10985557

    申请日:2004-11-10

    IPC分类号: H05B37/02

    摘要: A circuit for operating a high intensity discharge (HID) lamp includes an H-bridge connected between a common terminal and a power line, and a control circuit connected to the H-bridge. The control circuit includes a transformer having a primary winding connected between the common terminal and a power terminal and a secondary winding connected between the common terminal and the power line, and a current sense resistor connected in series between the secondary winding and the common terminal. The HID lamp is connected to the common terminal and to the second winding so as sense a current across the current sense resistor.

    摘要翻译: 用于操作高强度放电(HID)灯的电路包括连接在公共端子和电源线之间的H桥以及连接到H桥的控制电路。 该控制电路包括:一个变压器,其具有连接在公共端子和电源端子之间的初级绕组和连接在公共端子和电力线路之间的次级绕组;以及电流检测电阻器,串联连接在次级绕组和公共端子之间。 HID灯连接到公共端子和第二绕组,以便感测电流检测电阻器上的电流。

    Ballast with zero voltage switching converter
    4.
    发明授权
    Ballast with zero voltage switching converter 有权
    镇流器与零电压开关转换器

    公开(公告)号:US07402956B2

    公开(公告)日:2008-07-22

    申请号:US11660789

    申请日:2005-10-21

    IPC分类号: H05B37/02

    摘要: A ballast (10) for powering at least one gas discharge lamp (20) comprises a switching converter (100) and an inverter (900). Switching converter (100) includes a transistor (130) and a control circuit (200) that provides substantially zero voltage switching of the transistor (130) at a very high frequency. Preferably, control circuit (200) includes a drive circuit (300), a turn-on synchronization circuit (400), a current mirror circuit (500), a rail voltage regulator circuit (600), and a lamp current regulator circuit (700). Drive circuit (300) is preferably realized by a circuit arrangement that includes a standard pulse-width modulation integrated circuit (310).

    摘要翻译: 用于为至少一个气体放电灯(20)供电的镇流器(10)包括开关转换器(100)和逆变器(900)。 开关转换器(100)包括以非常高的频率提供晶体管(130)的基本上零电压开关的晶体管(130)和控制电路(200)。 优选地,控制电路(200)包括驱动电路(300),导通同步电路(400),电流镜电路(500),轨电压调节器电路(600)和灯电流调节器电路 )。 驱动电路(300)优选地通过包括标准脉宽调制集成电路(310)的电路装置来实现。

    High intensity discharge lamp with boost circuit
    5.
    发明授权
    High intensity discharge lamp with boost circuit 有权
    高强度放电灯带升压电路

    公开(公告)号:US07057356B2

    公开(公告)日:2006-06-06

    申请号:US10985555

    申请日:2004-11-10

    IPC分类号: H05B37/02 G05F1/00

    摘要: A circuit for operating a high intensity discharge (HID) lamp includes an H-bridge connected between a common terminal and a power line, and a control circuit connected to the H-bridge. A boost circuit is connected in parallel with the H-bridge between the power line and the common terminal, where the boost circuit includes a resistor, a Zener diode and a capacitor connected in series.

    摘要翻译: 用于操作高强度放电(HID)灯的电路包括连接在公共端子和电源线之间的H桥以及连接到H桥的控制电路。 升压电路与电源线和公共端之间的H桥并联连接,其中升压电路包括电阻器,齐纳二极管和串联连接的电容器。