Patent · US Active

Wireless power receiver synchronization detection circuit

US10840742B2 · kind B2 · utility

2Cited by
0References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 17, 2019
Grant dateNov 17, 2020
Priority date—
Expiry dateJun 17, 2039

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02B70/10
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A wireless power receiver circuit includes an active rectifier circuit with a plurality of power transistors, wherein the active rectifier circuit is configured to rectify an induced AC receiver current. The wireless power receiver circuit includes also includes a gate drive controller circuit configured to sense the induced AC receiver current and to provide gate drive signals for the plurality of power transistors synchronized with the induced AC receiver current. The gate drive controller circuit includes a current sense circuit configured to provide two voltage signals having a difference proportional to the induced AC receiver current.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.