SAFETY MONITORING OF POWER-UP AND/OR POWER-DOWN OF A POWER MANAGEMENT DEVICE

A power management device is disclosed comprising a power management processing unit and a safety unit; the power management processing unit comprising: a plurality of power units each configured to supply current from an input, and a main sequencer configured to implement a power-up sequence in and a power-down; the safety unit comprising: voltage monitors each configured to monitor the output voltage of a power unit; wherein the safety unit further comprises a safety sequencer configured to store sequence data; and wherein the safety unit further comprises a safety processing unit, configured to use the sequence data stored in the safety sequencer to monitor the plurality of power units during the power-up sequence by means of the respective voltage monitors. Associated systems and methods are also disclosed.