led backlight drive circuit
A technology of backlight drive circuit and boost circuit, which is applied in the direction of light source, electric light source, electrical components, etc., can solve the problems of increasing cost, and achieve the effects of improving boost efficiency, good practicability, and reducing cost
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[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0031] Reference figure 2 The present invention provides an embodiment of an LED backlight driving circuit 10. The LED backlight driving circuit 10 supplies power to the LED backlight module (not shown in the figure), which includes: a voltage stabilizing circuit 11, a first boosting circuit 12, a second boosting circuit 13, and a selection control circuit 14; the stabilizing circuit 11. Receive the input voltage, filter the input voltage, and output a regulated direct current; the first boost circuit 12 receives the regulated direct current, boosts it, and outputs it to the LED backlight module; the second boost The circuit 13, which receives the regulated DC power, boosts it, and outputs it to the LED backlight module; the selection control circuit 14 alternately selects the first boost circuit 12 and the second...
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