In this theory, we present a high-switching converter operating at 5MHz switching frequency, the inductor size is reduced to 1μH that can be integrated into chip successfully.
In our design, the 5MHz switching frequency is hard to increase because the bandwidths of the sub-circuits in the controller have reached the limits. That’s to say, how to speed up the sub-circuits’ operating time, to raise the switching frequency much more could be the next topic. The higher switching frequency also makes the size of output capacitor reduced, once the output capacitor can be integrated into chip, we can present a fully-integrated DC-DC converter.
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