On-chip DC-DC Converter for LPC55xx Family

This whitepaper describes the DC-DC buck converter general theory and working mechanism, gives the basic equations for the DC-DC converter, and gives the formula for the ripple of output voltage and cycle time of PFM signal. It also describes the control regulation of the DC-DC converter, gives the basic specs of the DC-DC buck converter, and discusses the consideration of selecting the inductor and bypass capacitor.

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