Isolated Boost Circuit, Backlight Module and Liquid Crystal Display Device Thereof

摘要

The present invention provides an isolated boost circuit, a backlight module and a liquid crystal display device. The isolated boost circuit provides power for the LED light string in the backlight module of the liquid crystal display device, which comprises a voltage input terminal, a driving signal unit, a transformer, and a controllable reverse isolation circuit. Wherein, the transformer comprises a primary coil and a secondary coil. The voltage input terminal is connected to the dotted terminal of the primary coil, and the opposite terminal of the secondary coil is connected to the LED light string. The opposite terminal of the primary coil is connected to a 01 terminal of the controllable reverse isolation circuit, the dotted terminal of the secondary coil is connected to a 02 terminal of the controllable reverse isolation circuit, and a 03 terminal of the controllable reverse isolation circuit is connected to the driving signal unit. The isolated boost circuit can improve the efficiency of the entire circuit, and increase the safety and the stability of the circuit.

主权项

1. An isolated boost circuit, comprising: a voltage input terminal, a driving signal unit, a transformer, and a controllable reverse isolation circuit;
wherein, the transformer comprising a primary coil and a secondary coil, the voltage input terminal connected to the dotted terminal of the primary coil, the opposite terminal of the primary coil connected to a 01 terminal of the controllable reverse isolation circuit, the dotted terminal of the secondary coil connected to a 02 terminal of the controllable reverse isolation circuit, and a 03 terminal of the controllable reverse isolation circuit connected to the driving signal unit.