Patent · US Active

Short circuit protection for a power switch

US9887535B2 · kind B2 · utility

0Cited by

6References

24Claims

0Family size

Assignee

Dialog Semiconductor (UK) Limited · GB

Inventors

Ambreesh Bhattad · Swindon, GB
Frank Kronmueller · Neudenau, DE
Christian Meindl · Munich, DE
Anthony Clowes · Swindon, GB

Key dates

Filing date	Aug 31, 2015
Grant date	Feb 6, 2018
Priority date	—
Expiry date	Nov 12, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH02H9/041
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power providing circuit which is configured to provide a current at an output voltage to a load at an output of the power providing circuit is described. The power providing circuit comprises a power transistor which is configured to draw the current from a supply voltage, wherein a resistance of the power transistor is controlled using a control voltage which is applied to a control port of the power transistor. Furthermore, the power providing circuit comprises short circuit protection circuitry which is configured to couple the control port of the power transistor with a first port of the power transistor to put the power transistor in an off-state, subject to a drop of the output voltage.

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