US Patent Issued to HAMILTON SUNDSTRAND on March 25 for "H-bridge circuit with bootstrap capacitor gate drive charging circuit" (British Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,517, issued on March 25, was assigned to HAMILTON SUNDSTRAND Corp. (Charlotte, N.C.).

"H-bridge circuit with bootstrap capacitor gate drive charging circuit" was invented by Ponggorn Kulsangcharoen (West Midlands, Great Britain), Rodrigo Fernandez-Mattos (West Midlands, Great Britain) and Jonathan Roadley-Battin (Birmingham, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bootstrap gate driver charging circuit arranged to drive the gate of an upper switch (QU) and a lower switch (QL) connected in series to provide an AC output voltage (400) voltage by alternatively turning on and off according to a predetermined duty cycle of alterna...