Boost-Buck Converting Circuit, Power Management Module And Liquid Crystal Driving Device

摘要

The disclosure is related to a boost-buck converting circuit, a power management module and a liquid crystal driving device. The boost-buck converting circuit comprises a voltage converting module and a switching module. The voltage converting module boosts an input voltage to obtain the analog supply voltage VAA or bucks the input voltage to obtain the digital supply voltage DVDD. The switching module controls the voltage converting module to boost or buck the input voltage. The embodiment of the disclosure shares a circuit set to generate the analog supply voltage VAA and the digital supply voltage DVDD. The structure of the circuit is not complicated and requires fewer components. The embodiment of the disclosure reduces the production costs and saves the area using of the panel.

主权项

1. A boost-buck converting circuit, comprising:
a voltage converting module boosting an input voltage to obtain an analog supply voltage VAA or bucking the input voltage to obtain a digital supply voltage DVDD; and a switching module controlling the voltage converting module to boost or buck the input voltage.