Patent · US Active

Peak voltage detection in a differentially driven wireless resonant transmitter

US10483802B2 · kind B2 · utility

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18Claims

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Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Jingwei Xu · Buffalo Grove, US
Vijayalakshmi Devarajan · Plano, US
Lindsay Langford · Austin, US

Key dates

Filing date	Mar 14, 2017
Grant date	Nov 19, 2019
Priority date	—
Expiry date	Mar 19, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/00712
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A wireless resonant power transmitter includes a first half-bridge and a second half-bridge adapted to be class D driven that are coupled to drive a series resonant circuit including a primary inductor (L) having a high side terminal and a low side terminal, and primary capacitor (C). A peak voltage sensor that includes a summing block is coupled across the high side terminal and the low side terminal of the primary L, and a peak-to-peak voltage detector is coupled to an output of the summing block to generate a DC voltage signal that is proportional to a peak-to-peak voltage across the primary C.

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