The design requirements for the sample processor in Figure 9-1 are outlined below:
- VDD CORE rail requires 0.8 V, 5 A
- MCU rail requires 0.85 V, 2 A
- CPU (AVS) rail requires 0.8 V, 3 A and the ability to support Adaptive Voltage Scaling
- LPDDR4 is used, which requires 1.1 V, 1 A and 1.8 V, 200 mA
- 1.8V PHYs and 0.8V PLLs and DLLs which are noise sensitive
- VDDA supplies the most noise sensitive components of the processor, requires
100 mA, and requires extra low noise