Lamp tube driving apparatus and method thereof

The lamp driving device includes time delay unit, the first logic unit, the second logic unit and transformer. The time delay unit receives one input signal and one control voltage signal to output one delay signal, and the delay signal has one delay time relative to the input signal and determined with the control voltage signal. The first logic unit receives the input signal and the delay signal and outputs one first signal through the first operation, while the second logic unit receives the input signal and the delay signal and outputs one second signal through the second operation. The transformer has its primary winding connected to the first switch and the second switch controlled separately by the first signal and the second signal; and the secondary winding outputting one driving signal to the lamp.