Getting Started with Power Rail Measurements

Performing DC power rail measurements is becoming increasingly difficult due to a number of factors like:
• Power efficiency features like power gating and dynamic voltage and frequency scaling or DVFS
• Dynamic loads with fast transients
• Increased crosstalk and coupling
• Switching regulators w/ faster rise times

This leads to an important question: With all these challenges, how does one ensure that each part of the system gets the correct power to meet its needs? This application note will discuss and address these questions.