Patent · US Active

Hybrid capacitive-inductive voltage converter

US9991794B2 · kind B2 · utility

4Cited by

3References

15Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Michael Lueders · Yokohama, JP
Erich Bayer · Straubing, DE
Thomas Schaeffner · Unterschleißheim, DE
Giacomo Calabrese · Freising, DE

Key dates

Filing date	Mar 22, 2016
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Mar 22, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/072
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An inverting buck voltage converter constructed of a switched-mode hybrid topology, with a capacitive input stage and an inductive output stage. The input stage operates as a charge pump to charge a flying capacitor connected in series with an inductor in the output stage. Clock circuitry generates first and second non-overlapping clock phases. In the second clock phase, the flying capacitor is charged to the input voltage, with a flying node between the flying capacitor and the output inductor connected at ground through a rectifier, while in the first clock phase, the flying capacitor supports the inductor current. The arrangement of the flying capacitor and inductor is such that the voltage appearing at the output terminal is inverted from the input voltage. Continuous output current is provided. Current limiting techniques protect the flying capacitor from overcurrent conditions.

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