How to Measure Power Consumption of a Multiplexer and XOR Gate in MATLAB Simulink?

Hello everyone,

I am currently working on a logic circuit in MATLAB Simulink that involves a Multiplexer (MUX) and an XOR gate. I would like to measure the power consumption (current) of both the MUX and XOR components, but I'm not sure how to go about it in Simulink, since this logic circuit doesn't have a power source yet.

Here are some details about my setup:

• I have a 4-to-1 MUX and an XOR gate in my design.
• I am looking to measure the dynamic power consumption for each gate during operation.

Could anyone provide guidance on:

1. How to model or simulate the power consumption for logic components like MUX and XOR gates in Simulink?
2. Any recommended blocks or libraries to use?
3. Approaches for accurately measuring the current drawn by these components?

Any tips or examples would be greatly appreciated!

[Balaji]

Balaji

Answer 1

[Joel Van Sickel]

This is a bit tricky. The straightforward way to model the power consumption is to model the transistor implementation of the gates and look at the power consumed by every transistor. Simscape electrical has detailed transistor models where you could do this. What would be easier, would be to get behavioral information on the performance of your gates, so basically, what is their constant power consumption, and what is their power consumption when switching states, then create your own behavioral power model where you sum these values up based on detected changes of state. So constantly integrate the constant power over time, and add the transition power everytime there is a state change.