Since the LCD screen itself does not have a light-emitting function, it is necessary to add a lighting system behind the LCD screen, which consists of a light-emitting component, a light guide plate, and a backlight power supply. The power of the TV backlight power supply is generally 100-500W, and its function is to convert the AC voltage of the mains into a 12V DC voltage output, thereby supplying power to the display. Due to the DC-DC voltage converter on the motherboard inside the monitor to obtain 8V/5V/3.3V/2.5V voltage, the 12V DC voltage output from the power supply can meet the requirements of the monitor's operation. The general topology structure will adopt PFC, LLC, SR, Flyback, BOOST+CC/CV topology, etc.

The ultra-thin appearance of the new generation TV poses a challenge to the miniaturization and slimness of backlight power supplies. Rongmei offers the widest range of surface mount high and low voltage MOSFETs with excellent EMI and thermal performance.