Patent ID: 8994219
Filing Date: 2015-03-31
Classification: G05F,H02M

Abstract:
1. A DC/DC module, comprising: a buck-boost circuit, which is used to convert an input voltage of the DC/DC module into a gate off-state voltage (VGL); a low drop out (LDO) circuit, which is connected in series to the buck-boost circuit, used to convert the input voltage of the buck-boost circuit into a lower limit output voltage (VBB) of a liquid crystal driver; a buck circuit, which is used to convert the input voltage of the DC/DC module into an operating (VDD) of a specific integrated circuit (IC); a charge pump circuit, which is used to convert the input voltage of the DC/DC module into a gate on-state voltage (VGH); wherein, the input voltage of the DC/DC module is used directly as an upper limit output voltage (VAA) of the liquid crystal driver.