Voltage converting LED circuit with switched capacitor network
    1.
    发明授权
    Voltage converting LED circuit with switched capacitor network 有权
    电压转换LED电路与开关电容网络

    公开(公告)号:US09136758B2

    公开(公告)日:2015-09-15

    申请号:US12611870

    申请日:2009-11-03

    摘要: A Voltage Converting LED Circuit with Switched Capacitor Network contains a 2-way MOSFET switch that connects a capacitor network to the output of an error amplifier, thereby enabling the error amplifier to resume operation quickly after the off-time segment of a PWM cycle. The switch is controlled synchronously with current sinks controlling brightness and color levels. In a preferred embodiment, multiple serially connected strings of LED's can be controlled simultaneously via one switch.

    摘要翻译: 具有开关电容网络的电压转换LED电路包含一个将电容器网络连接到误差放大器的输出的2路MOSFET开关,从而使误差放大器能够在PWM周期的关断时间段之后快速恢复运行。 该开关与控制亮度和颜色水平的电流槽同步控制。 在优选实施例中,可以通过一个开关同时控制多个串联的LED串。

    Voltage Converting LED Circuit with Switched Capacitor Network
    2.
    发明申请
    Voltage Converting LED Circuit with Switched Capacitor Network 审中-公开
    电压转换LED电路与开关电容网络

    公开(公告)号:US20140191740A1

    公开(公告)日:2014-07-10

    申请号:US12611870

    申请日:2009-11-03

    申请人: Xiaofan Chen

    IPC分类号: H02M3/156 H05B33/08

    摘要: A Voltage Converting LED Circuit with Switched Capacitor Network contains a 2-way MOSFET switch that connects a capacitor network to the output of an error amplifier, thereby enabling the error amplifier to resume operation quickly after the off-time segment of a PWM cycle. The switch is controlled synchronously with current sinks controlling brightness and color levels. In a preferred embodiment, multiple serially connected strings of LED's can be controlled simultaneously via one switch.

    摘要翻译: 具有开关电容网络的电压转换LED电路包含一个将电容器网络连接到误差放大器的输出的2路MOSFET开关,从而使误差放大器能够在PWM周期的关断时间段之后快速恢复运行。 该开关与控制亮度和颜色水平的电流槽同步控制。 在优选实施例中,可以通过一个开关同时控制多个串联的LED串。