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AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorsXianming Zhang, Dan Cao
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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.
A boost-buck converting circuit, comprising:
A power management module, comprising a boost-buck converting circuit being switchable for outputting a first supply voltage (VAA) or a second supply voltage (DVDD), the boost-buck converting circuit comprising:
A liquid crystal driving device, comprising a power management module;
Dependencies are inferred from the claim text.