US 12,149,189 B2
Devices with multiple electrical converters for synchronized electrical charge extraction
Vadim Piskun, San Jose, CA (US); and Rakesh Sethi, San Jose, CA (US)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Jul. 6, 2021, as Appl. No. 17/367,818.
Prior Publication US 2023/0011704 A1, Jan. 12, 2023
Int. Cl. H02N 2/18 (2006.01); H02J 3/38 (2006.01); H02M 1/00 (2006.01); H02M 3/157 (2006.01)
CPC H02N 2/181 (2013.01) [H02J 3/381 (2013.01); H02M 1/0012 (2021.05); H02M 3/157 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
while an energy harvesting device is in a cold start state, converting an electrical output provided by the energy harvesting device using a first voltage converter; and
in accordance with the energy harvesting device transitioning from the cold start state to a steady state, activating, with a microprocessor, a second voltage converter for synchronously converting the electrical output provided by the energy harvesting device.