公开(公告)号：US06570367B2

公开(公告)日：2003-05-27

申请号：US10090278

申请日：2002-03-04

Applicant: Rainer Bartenschlager ,  Martin Brox ,  Albert Graf V. Keyserlingk

Inventor： Rainer Bartenschlager ,  Martin Brox ,  Albert Graf V. Keyserlingk

IPC: G05F159

CPC classification number: G05F1/465

Abstract: A voltage generator for producing an internal supply voltage has a standby voltage generator and a voltage generator for normal operation that are controlled in common by a reference voltage. In addition, a comparator stage is provided whose switching threshold is set lower than the reference voltage by using a voltage divider that is connected to the reference voltage. The additional comparator stage thus activates the voltage generator for normal operation when the internally produced voltage falls below its switching threshold so that the internal supply voltage is stabilized.