Voltage regulator with a current mirror for partial current decoupling

US7129683B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Gunter Haider · Linz, AT
• Gerhard Nebel · Immenstadt im Allgäu, DE
• Iker San Sebastian · Madrid, ES
• Andreas Schlaffer · Munich, DE
• Uwe Weder · Freiburg im Breisgau, DE

Key dates

• Filing date: Jan 18, 2006
• Grant date: Oct 31, 2006
• Expiry date: Jan 18, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G05F3/267
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A voltage regulator having a current mirror for decoupling a partial current icluding a first NMOS transistor as a series transistor. In addition, the voltage regulator has a second NMOS transistor, which forms a current mirror with the first NMOS transistor. Furthermore, in the case of the voltage regulator, the first NMOS transistor is connected in series with a first PMOS transistor and a third transistor. The second NMOS transistor is likewise connected in series with a second PMOS transistor and a fourth transistor, the control inputs of the first and second PMOS transistors being connected to one another and the control inputs of the third and fourth transistors being connected to a control terminal for setting the magnitude of the partial current to be decoupled.