Multi-mode power converters with shared components

A power converter circuit including:

• (a) a first terminal for receiving a first voltage;
• (b) a second terminal for providing a second voltage;
• (c) a third terminal configured to be coupled to a reference potential;
• (d) a battery interface circuit coupled to the second terminal and configured to be coupled to the reference potential;
• (e) an adiabatic charge pump circuit coupled between the first terminal and the reference potential, and coupled to the battery interface circuit through a first inductor;
• and
• (f) an inductive buck converter circuit coupled between the first terminal and the reference potential, and coupled to the battery interface circuit through a second inductor;
• wherein in a first mode of operation of the power converter circuit, the adiabatic charge pump circuit is deactivated, and the inductive buck converter circuit is activated;
• wherein in a second mode of operation of the power converter circuit, the adiabatic charge pump circuit is activated, and the inductive buck converter circuit is deactivated;
• and
• wherein the adiabatic charge pump circuit and the inductive buck converter circuit share the battery interface circuit and at least one of (1) a power switch coupled to the first terminal and a power switch coupled to the third terminal, (2) at least one fly capacitor, or (3) the first inductor.