5.3.2. Power Management

Try these first

1. 1.

   What does multi-voltage domain mean?

   Hint

   Think about how digital and analog can each have their specific power needs.

2. 2.

   What is power gating?

   Hint

   Consider why you might want to turn off unused circuits.

3. 3.

   What is the characteristic feature of digital IP power consumption?

   • Stable and constant
   • Transient and variable
   • Lower than analog

   Hint

   Think about the behavior of digital circuits when they switch.

4. 4.

   True or False: Power gating can help save energy in an SoC.

   • True
   • False

   Hint

   Consider the benefits of not using unnecessary components.

5. 5.

   Develop a power management framework for an IoT sensor that operates both in a low-power mode and during heightened activity.

   Hint

   Think about how differently your sensors behave when collecting data versus sleeping.

6. 6.

   Design a mixed-signal SoC that incorporates both digital processors and analog components. Specify the power management strategy you would implement.

   Hint

   Reflect on how different components can be activated or deactivated to align with the application workload.