US 12,388,364 B2
DC-DC converter based on piezoelectric resonator
David J. Perreault, Cambridge, MA (US); Jessica Boles, Murfreesboro, TN (US); and Joshua Piel, Fairfax Station, VA (US)
Assigned to Massachusetts Institute of Technology, Cambridge, MA (US)
Filed by Massachusetts Institute of Technology, Cambridge, MA (US)
Filed on May 1, 2024, as Appl. No. 18/652,104.
Application 18/652,104 is a continuation of application No. 17/605,255, granted, now 12,009,746, previously published as PCT/US2020/037418, filed on Jun. 12, 2020.
Claims priority of provisional application 62/861,059, filed on Jun. 13, 2019.
Prior Publication US 2024/0356438 A1, Oct. 24, 2024
Int. Cl. H02M 3/156 (2006.01); H02M 3/155 (2006.01)
CPC H02M 3/155 (2013.01) 20 Claims
OG exemplary drawing
 
1. A converter comprising:
an input;
a single output;
a plurality of switches; and
a piezoelectric resonator (PR) having a first terminal and a second terminal, wherein the switches are configured to be operated according to one or more switching sequences to transfer energy from the input to the output via the PR,
wherein at least one of the switching sequences includes at least eight stages alternating between:
connected stages in which the first PR terminal is connected to one of the input, the output, or the second PR terminal and the second PR terminal is connected to one of the input, the output, or the first PR terminal, and
open stages in which the first PR terminal is not connected to any of the input, the output, or the second PR terminal and/or the second PR terminal is not connected to any of the input, the output, or the first PR terminal.