ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,208, issued on May 27, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Three-level direct current converter, power supply system, and chip" was invented by Guolei Yu (Dongguan, China), Shuchao Song (Hangzhou, China), Junliang Qin (Dongguan, China) and Zhiqiang Xiang (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The three-level direct current converter includes: a flying capacitor, a plurality of switch groups, a drive circuit, and a control circuit. The control circuit includes at least an on-time generator. When a voltage on the flying capacitor deviates from a half of a power supply voltage, the on-time generato...