METHOD FOR MANAGING THE SUPPLY VOLTAGE OF A MICROCONTROLLER FOR AN ELECTRONIC COMPUTER OF A MOTOR VEHICLE

摘要

A method for managing the power supply voltage (V_s) of an electronic computer of a motor vehicle, the electronic computer including: a microcontroller, a power supply circuit powered by a battery and supplying the microcontroller with a power supply voltage regulated by a regulator having a nominal regulation frequency (F_REF) set by a clock, at least one electronic component connected to the microcontroller and the power supply circuit which supplies it with a regulated power supply voltage, a element of communication between the microcontroller and the power supply circuit, the method includes:identification of an imminent modification of the current demand,sending an instruction to increase the F_REF,increasing its F_REF to a higher regulation frequency (F_ACCEL), for a predetermined time period (T) measured by the internal clock,when T has elapsed, lowering the higher regulation frequency (F_ACCEL) to its nominal regulation frequency (F_REF).