Power supply controller for electronic circuits, components and corresponding devices

Abstract

A power supply controller for electronic circuits, supplying a power supply voltage (VDC) and preventing operation of the said circuit by using a RESET signal when the said power supply voltage is less than a first predetermined threshold. The controller includes a first comparator (C2) comparing a voltage proportional to the power supply voltage with a reference voltage and activating the reset signal when the voltage proportional to the power supply voltage is less than the reference voltage. A bandgap module supplies a principal reference voltage (VBGAP). Preliminary reference devices immediately supply a preliminary reference voltage (V09), less than the principal reference voltage. Control circuits receive the preliminary reference voltage (V09) and the principal reference voltage (VBGAP) and automatically activate the RESET signal for as long as the principal reference voltage (VBGAP) has not reached a second predetermined threshold.

Dependencies are inferred from the claim text.