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    • 99. 发明授权
    • Led power supply systems and methods
    • LED电源系统和方法
    • US08810153B2
    • 2014-08-19
    • US13182000
    • 2011-07-13
    • Katsura YoshioYasuo Matsumura
    • Katsura YoshioYasuo Matsumura
    • H05B37/02
    • H05B33/0815H05B33/0827
    • One aspect of the present invention includes a light-emitting diode (LED) power supply system. The system includes an LED regulator configured to monitor at least one LED voltage associated with a respective at least one activated LED string and to generate an LED regulation voltage based on the at least one LED voltage relative to an LED power voltage that provides power to the at least one activated LED string. The system also includes a power converter configured to generate the LED power voltage and to regulate the LED power voltage based on the LED regulation voltage.
    • 本发明的一个方面包括发光二极管(LED)电源系统。 该系统包括LED调节器,其被配置为监测与相应的至少一个激活的LED串相关联的至少一个LED电压,并且基于相对于向所述至少一个激活的LED串提供电力的LED功率电压的至少一个LED电压来产生LED调节电压 至少一个激活的LED串。 该系统还包括功率转换器,其被配置为产生LED电源电压并且基于LED调节电压来调节LED电源电压。
    • 100. 发明申请
    • BOOST CIRCUIT AND POWER SUPPLY DEVICE
    • 升压电路和电源设备
    • US20090309565A1
    • 2009-12-17
    • US12487390
    • 2009-06-18
    • Yasuo Matsumura
    • Yasuo Matsumura
    • G05F1/00
    • H02M3/156H02M1/14
    • The objective of this invention is to provide a boost circuit that reduces power consumption and prevents malfunctioning when the input voltage becomes greater than a target voltage for the output voltage. Control circuit module 5 sets both control signals HCNT2 and LCNT2 to low level “L” when the conditions “output voltage VBoost is higher than voltage OVREF” and “voltage (VIN+VOFFSET) is higher than output voltage VBoost” are satisfied. With this, in boost circuit module 7, switch SWH will be off and switch SWL will be on to forcibly switch to mode B. In mode B, because switch SWH is on, output voltage VBoost will be near input voltage VIN, and the power consumption can be reduced.
    • 本发明的目的是提供一种升压电路,其在输入电压变得大于输出电压的目标电压时降低功耗并防止故障。 当条件“输出电压VBoost高于电压OVREF”和“电压(VIN + VOFFSET)高于输出电压VBoost”时,控制电路模块5将控制信号HCNT2和LCNT2设置为低电平“L”。 因此,在升压电路模块7中,开关SWH将断开,开关SWL将被强制切换到模式B.在模式B中,由于开关SWH导通,因此输出电压VBoost将接近输入电压VIN,功率 消费可以减少。