High efficiency inverter controller circuit

High efficiency inverter controller circuit

Shown is a high-efficiency inverter controller circuit, which is used as a power supply circuit for LCD backlights. This circuit is mainly composed of control
chip Ul (02962G), driving field effect transistor U2, voltage transformer, backlight tube and related circuits constituted.
    The +12 V DC voltage sent from the DC power supply supplies power to the integrated circuit Ul and the driving field effect transistor after passing through the filter capacitor Cl; the start
signal (ENA) is sent to the @ pin of U1 to control the start of the inverter circuit. stop. When the power supply of the inverter is normal and the start signal is received,
the ⑩ and @ pins of Ul output the guard-interactive PWM pulse signal, which is amplified by the driving field effect transistor and sent to the
boost transformer. The boost transformer converts the pulse signal to the step-up transformer. The voltage is increased to approximately 800 V to power the backlight tube.