DC-DC CONTROL SYSTEM FOR TRANSITIONING A DC-DC VOLTAGE CONVERTER FROM A BUCK OPERATIONAL MODE TO A SAFE OPERATIONAL MODE

摘要

A control system is provided for transitioning a DC-DC voltage converter from a buck mode of operation to a safe mode of operation. The microcontroller performs a first scheduled task including execution of the first application and the second application. The task due date monitoring application sets the task due date flag to a first fault value when the time interval associated with the execution of the first scheduled task is greater than a threshold time interval. The hardware extraction layer prohibits the operation of the disable pin of the watchdog IC when the work due flag is equal to the first fault value, thereby causing the watchdog IC to transition the DC-DC voltage converter to the safe operation mode. To induce.