Tuning for Stability: A Practical Guide to Non-invasive Stability Measurement (NISM) in Keysight ADS

Benjamin Dannan
4 minutes ago
2 min read

Stability is a critical factor in any power delivery network (PDN), and our SI/PI Library gives you the tools to ensure your design is robust. Specifically, the resources provided by the SI/PI Library are important for effective pre-layout verification and power integrity simulation. With our state-space average VRM models, like the LTM4650-1, you can go beyond basic simulations and perform advanced stability analysis directly within Keysight ADS. This is the foundation for accurate PDN Analysis.

This video demonstrates the incredible power of Non-invasive Stability Measurement (NISM). We'll show you how to quickly check the stability of your PDN using one of our VRM models, enabling rapid and reliable PDN Analysis. But we won't stop there. The video also highlights the convenience of the ADS tuner, showing you how to quickly and easily fix any stability issues that arise. The precision of our high-fidelity models ensures that your tuning adjustments are accurate and reliable. This feature makes it simple to tune your control loop, proving that with our models, correcting your design is as quick as it is effective.

The ability to perform such detailed analysis is a testament to the high-fidelity of our models, a topic we touched on in our first blog on getting started with our PDK. Our models provide both large and small signal analysis, a key feature that we’ve also discussed in Power Integrity Unleashed: Navigating State-Space Average VRM Models for Robust Simulation Designs in Keysight ADS. After mastering stability and PDN analysis, the next step is optimizing for efficiency. In our final blog, we’ll show you how to run an efficiency simulation with one of our models.

Don't let stability issues derail your design. Our high-fidelity models and NISM tools make it easy to ensure a robust PDN. Contact us to find out more about licensing our SI/PI Library and gaining access to these powerful capabilities within Keysight ADS.