ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,815, issued on June 17, was assigned to Astec International Ltd. (Kowloon, Hong Kong).
"Multi-phase interleaved power converters with improved current balancing" was invented by Zhihua Gu (Kowloon, Hong Kong), Siu Chik Wong (Kowloon, Hong Kong) and Kim Ly Kha (Kowloon, Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-phase interleaved PFC converter includes at least six switches coupled in a multi-phase interleaved circuit arrangement, and a control circuit. The control circuit is configured to turn on and turn off a first one of the switches according to a PWM signal to operate the first switch as an active switch having an off-time...