DC boost topology circuit for backlight driving

摘要

The present invention provides a DC boost topology circuit for backlight driving, which includes a coupling inductor including a primary coil having an end connected to a DC voltage input terminal and an opposite end connected to a secondary coil and a field-effect transistor that has an end grounded. An energy storage module includes a first capacitor and a first diode. The secondary coil has an end connected to the first capacitor and an opposite end connected to an opposite end of the primary coil and the first diode of which an opposite end connected to an opposite end of the first capacitor. A circuit protection unit has an end connected to a common terminal of the first diode and the first capacitor and an opposite end connected to a DC voltage output terminal. The topology circuit has an output voltage that is multiple times of that of known circuits.