Tung & Associates
Tail-less LED control circuit
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.
Richtek Technology Corporation, R.O.C.
H H Y H H
H05B H05B Y02B H05B H05B
inventional inventional additional inventional inventional
Leng-Nien Jing-Meng Chiawei
Hsiu Liu Liao