From graphics processor units (GPUs) and central processing units (CPUs) to field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and heterogeneous SoCs, every processor requires power sequencing. These digital loads often operate from multiple voltage rails, each of which may supply a different on-chip power domain. Power sequencing is the process of applying and removing power from these voltage rails in a specific order during system startup and shutdown. It also introduces a new, simple-to-use sequencing solution that requires no programming, digital communication, or bias power supply. How Power Sequencing Typically WorksOne common approach to sequencing involves placing several DC-DC converters in front of the processor and switching them on one after the other by linking the generated voltages with enable (EN) pins.