Merged switched-capacitor piezoelectric resonator based power converter

A power converter comprising:

• a first pair of semiconductor switches comprising a first semiconductor switch and a second semiconductor switch electrically connected to each other at a first electrical connection node;
• a second pair of semiconductor switches comprising a third semiconductor switch and a fourth semiconductor switch electrically connected to each other at a second electrical connection node, wherein the second semiconductor switch is electrically connected to the fourth semiconductor switch at a third electrical connection node;
• and
• a piezoelectric-resonator having a first terminal electrically connected to the third electrical connection node and a second terminal electrically coupled to an output terminal of the power converter.

A method for controlling operation of a power converter including a first stage, a second stage and a piezoelectric-resonator, wherein the first stage includes a plurality of semiconductor switches and at least one flying capacitor, the method comprising:

• generating, by a controller of the power converter, switching signals at a fixed switching frequency;
• supplying, by the controller, the switching signals to at the first stage;
• and
• operating, by the first stage, the plurality semiconductor switches at the fixed switching frequency.