Patent · US Active

Linear charger circuit and method of operating linear charger circuit

US10439421B2 · kind B2 · utility

1Cited by

1References

32Claims

0Family size

Assignee

Dialog Semiconductor (UK) Limited · GB

Inventors

Mihail Jefremow · Augsburg, DE
Selcuk Talay · San Jose, US
Fabio Rigoni · Karlsfeld, DE

Key dates

Filing date	Jul 31, 2017
Grant date	Oct 8, 2019
Priority date	—
Expiry date	Feb 15, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH03K5/24
WIPO fieldControl
WIPO sectorInstruments

Abstract

A linear charger circuit and method for providing an output current at an output node is presented. The circuit contains a pass device connected between an input node and the output node, first and second replica devices connected in parallel to the pass device, with their control terminals coupled to a control terminal of the pass device. The first replica device is coupled to a first circuit path for determining whether current output by the linear charger circuit shall be terminated. The second replica device is coupled to a second circuit path for providing feedback for controlling the pass device, a control circuit coupled to the second circuit path for controlling the pass device based on a quantity indicative of a current flowing through the second circuit path, and a switching circuit coupled to the second circuit path.

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