Infineon Technologies Ag

Andreas Schlaffer

Uwe Weder

Gerhard Nebel

Gunter Haider

Peter Fleischmann

Iker San Sebastian

A voltage regulator arrangement having a first voltage regulator, whose input connection is connected to the supply potential connection and whose output connection is connected to a first supply potential connection of a circuit arrangement, with the first voltage regulator supplying the circuit arrangement with a supply voltage in a rest state. A second voltage regulator is also provided, whose input connection is connected to the supply potential connection, and whose output connection is connected to a second supply potential connection of the circuit arrangement, with the second voltage regulator supplying the circuit arrangement with a supply voltage during its normal operation.

Voltage regulator arrangement

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.

Voltage regulator with a current mirror for partial current decoupling

Circuit arrangement for voltage regulation having a voltage divider and a regulating circuit. The voltage divider is arranged between a first potential and a reference-ground potential and has a plurality of diodes connected in series, wherein an output voltage is tapped off at a terminal of one of the diodes. The regulating circuit, to which the output voltage and a reference voltage are applied, regulates the first potential based on a comparison of the output voltage with the reference voltage. The divider ratio of the voltage divider is altered by activating or deactivating one or more of the diodes, and is additionally altered by setting a magnitude of a voltage drop across at least one of the diodes.

Growing community of inventors

Munich, Germany

Andreas Schlaffer