In recent years, LCD liquid crystal display screens are no longer limited to use in the original mid-to-high-end products, but are also becoming more and more popular on mobile phones and some portable handheld game consoles. With the widespread use of LCDs on low-end products, it is important to provide a low-cost LCD power solution for these products. Using our DC/DC power management chip, we have listed a power supply scheme using a DC/DC converter for real multi-channel voltage output.
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â– Circuit principle
A circuit composed of DC/DC is used as a main power supply circuit (providing low voltage and high current). The power supply of the auxiliary circuit section can be obtained by adjusting the switching waveform of the main power supply (these circuits usually have high voltage, small current, or negative voltage and small current). In this way, there is a double voltage output or a negative voltage output.
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