Patent · US Expired

Voltage pump with switch-on control

US6542389B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Infineon Technology AG · DE

Inventors

Stefan Dietrich · Potsdam, DE
Patrick Heyne · Hersbruck, DE
Thilo Marx · Villingen-Schwenningen, DE
Sabine Kieser · Hausham, DE
Michael Sommer · Raubling, DE
Thomas Hein · Hersbruck, DE
Michael Markert · Augsburg, DE
Torsten Partsch · San Jose, US
Peter Schrogmeier · Hersbruck, DE
Christian Weis · Scheidegg, DE

Key dates

Filing date	Oct 19, 2001
Grant date	Apr 1, 2003
Priority date	—
Expiry date	Oct 19, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/07
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The voltage pump for generating a boosted output voltage has a switch-on control circuit. The switch-on control includes a transistor that is connected between a terminal for feeding in a supply voltage and the terminal for tapping off the boosted output voltage. After the voltage pump has started to operate, the boosted output voltage is decoupled from the supply voltage by the transistor. A changeover switch forwards the respective higher of the output voltage or supply voltage to the substrate terminal and gate terminal of the transistor. The switch-on control enables early provision of a boosted output voltage in conjunction with reliable start-up operation of the voltage pump, while the additional outlay on circuitry is minimized.

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