Patent · US Active

Secondary controller for a flyback converter including a sense resistor fault detection

US10033285B1 · kind B1 · utility

8Cited by

10References

7Claims

0Family size

Assignees

DIALOG SEMICONDUCTOR INC. · DE
Dialog Semiconductor (UK) Limited · GB

Inventors

Xiaoyong Zhang · Hiratsuka, JP
Frank Kronmuller · Kirchheim unter Teck, DE
Jiandong Zhang · Sunnyvale, US
Lijie Chen · Shanghai, CN
Honglai Wang · Tianjin, CN
Yimin Chen · Lo Wu, CN

Key dates

Filing date	Jun 19, 2017
Grant date	Jul 24, 2018
Priority date	—
Expiry date	Jun 19, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/0025
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power system and related methods provide sense resistor fault detection and safe operation of switching power converters and connected devices such as portable electronic devices powered by the switching power converter. The power system detects an open circuit or short circuit condition of the sense resistor and controls output current of the switching power converter to ensure safe operating conditions of the power system and connected equipment. The power system can also detect initial inrush current of the connected equipment and detect a duty cycle of the switching power converter to positively detect a short circuit condition of the sense resistor.

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