Patent · US Active

Automatic current limit adjustment for linear and switching regulators

US8410764B2 · kind B2 · utility

3Cited by

8References

16Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Stefano Scaldaferri · Munich, DE
Eric Marschalkowski · Munich, DE
Christian Wolf · Arlington, US

Key dates

Filing date	May 24, 2010
Grant date	Apr 2, 2013
Priority date	—
Expiry date	May 26, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/157
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Circuits and methods for dynamic adjustment of the current limit of a power management unit to avoid unwanted automatic interruption of the power flow have been disclosed. The power management unit is automatically adjusted to the output resistance of a power source (including interconnect resistance). The invention maximizes the time and hence the power transferred from a power management unit to the system (including the battery, in case of battery operated systems). The input current is reduced thus increasing the input voltage in case of a high voltage drop across the internal resistance including interconnections between power source and power management unit.

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