Patent ID: 8624524

Claim:
A power management and control module adapted for a display device comprising a gate driving circuit, a source driving circuit and a LED backlight source, the power management and control module comprising: a first boost-type DC/DC topology circuit, comprising a first voltage output terminal, wherein the first voltage output terminal is electrically coupled to a logic high power supply terminal of the gate driving circuit and a power supply terminal of the LED backlight source; a LED dimming control circuit, electrically coupled to the LED backlight source for performing a dimming operation to the LED backlight source; and a first multiplexer, comprising a first data input terminal, a second data input terminal and a first data output terminal, wherein the first data input terminal and the second data input terminal are electrically coupled to the first voltage output terminal of the first boost-type DC/DC topology circuit by a first feedback network and a second feedback network respectively, the LED backlight source is electrically coupled in the second feedback network, and the first data output terminal is electrically coupled to the first boost-type DC/DC topology circuit to thereby alternatively electrically communicate with the first data input terminal or the second data input terminal for providing the first boost-type DC/DC topology circuit with a feedback input voltage.