LCD backlight power supply circuit

LCD backlight power supply circuit

Shown is the LCD backlight power supply circuit , which uses the BIT3106 chip as a switching oscillation integrated circuit. This circuit is
a high-education dual-tube drive circuit. There are two sets of PWM signal generation circuits
    inside the BIT3106 chip , and the @ pin is the start control terminal. @Pin is the brightness control terminal. When the start signal is added to the @ pin. The PWM signal generation circuit starts working and is output by @~@ respectively. The driving field effect transistor provides driving signals to the primary windings of the step-up transformers TI and T2. After passing through the step-up transformer, it supplies power to the backlight tube.