Patent · US Active

Switching power converter with secondary to primary messaging

US9318963B2 · kind B2 · utility

4Cited by

9References

20Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Jianming Yao · Cupertino, US
Pengju Kong · Campbell, US
Yong Li · San Jose, US
Junjie Zheng · Cupertino, US

Key dates

Filing date	Oct 1, 2013
Grant date	Apr 19, 2016
Priority date	—
Expiry date	Mar 14, 2034

Classification

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

Abstract

A primary-only power supply enables transmission of a signal or message from the secondary side of an isolated power supply to the primary side. To enable robust detection of the message without interfering with primary side sensing for output regulation, a configurable impedance current path is configured between the primary winding and ground. The primary side controller controls the configurable impedance current path to have a relatively low impedance during the normal mode and a relatively high impedance during the messaging mode.

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