Patent · US Expired

Circuit for generating a defined temperature dependent voltage

US6744304B2 · kind B2 · utility

7Cited by

5References

11Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Jens Egerer · Birkenfeld, DE
Heiko Fibranz · Hersbruck, DE
Eckehard Plaettner · Oberhaching, DE

Key dates

Filing date	Sep 3, 2002
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Sep 3, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG05F3/225
WIPO fieldControl
WIPO sectorInstruments

Abstract

An electronic circuit for generating an output voltage has a defined temperature dependence, a bandgap circuit for generating a defined temperature-constant voltage and a temperature-dependent current with a defined temperature dependence, and a conversion circuit for generating the output voltage from the temperature-dependent current and the temperature-constant voltage. The conversion circuit has a first resistor at whose first terminal the temperature-constant voltage is applied, and whose second terminal is connected to a first terminal of a second resistor. The second terminal of the second resistor is connected to a supply voltage potential, and a first terminal of a third resistor is connected to the second terminal of the first resistor. The temperature-dependent current is supplied to a second terminal of the third resistor, and it being possible to tap the output voltage at the second terminal of the third resistor.

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