The physical requirements or constraints on the system may include:
- Power consumption
- Safety/Reliability: Low-cost reliability with minimal redundancy.
- Physical size and weight (eg: packaging and integration contraints for digital, analog, and power circuits)
- Geometries may be non-rectangular, non-planar
- Power consumption (in various system modes)
- Physical robustness: (eg: accurate thermal modelling; de-rating components differently for each design, depending on the operating environment).
- Overall weight
