| 摘要 |
PURPOSE: A light-emitting device driving device and a dimming control method thereof are provided to reduce flickering by constantly maintaining a dimming signal. CONSTITUTION: A transformer converts first current into second current and supplies to a load unit. A first sampler(311) samples a peak value of the first current. An integrator(312) outputs a signal proportional to the average value of current flowing through the load unit. A level detector(316) transmits a reset signal to the integrator. The level detector transmits a judge signal to the compensator. [Reference numerals] (301) Rectifying unit; (313) Second sampler; (314) Switching control unit; (316) Level detector; (319) Compensator |
