Patent · US Active

Power adapter having ultra low standby power

US11527962B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Pengju Kong · Campbell, US
Wenduo Liu · Thousand Oaks, US
Yong Xiong Lin · Campbell, US

Key dates

Filing date	Sep 14, 2020
Grant date	Dec 13, 2022
Priority date	—
Expiry date	Dec 31, 2040

Classification

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

Abstract

A standby power system for a flyback converter is disclosed. The flyback converter includes a primary-side, a secondary-side, an output terminal at the secondary-side, and a secondary-side controller, where the output terminal is configured to electrically connect to a load. The standby power system comprises a comparator at the secondary-side, an opto-coupler in signal communication with the primary-side, the secondary-side, and the comparator, and a cable detach detector (or load detector). The cable detach detector is configured to determine whether a device is electrically connected to the flyback converter through a charging cable and to set the flyback converter into a standby mode if the deice is disconnected from the charging cable.

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