Ready to Start Your Power Integrity Analysis?
Contact AEi Systems today for a free consultation or quotation.In high-speed electronics, even minor power fluctuations can cause major system instability. AEi Systems' Power Integrity Analysis verifies your design's power delivery network (PDN) can handle every load, transient, and noise condition—before they turn into costly board spins or field failures.
Benefits of PI Analysis
By modeling your VRMs, decoupling networks, and PDN impedance, AEi Systems helps you understand exactly how your design performs under real operating conditions. The results are clear advantages:
- Detect power distribution and noise issues early
- Reduce prototype and production re-spins
- Improve FPGA, memory, and high-speed circuit reliability
- Validate VRM, decoupling, and PDN design choices
- Strengthen overall system performance and predictability
Why It's Essential
Power integrity isn't guesswork. Real-world performance depends on complex interactions that can't be captured by rules of thumb alone. Detailed analysis exposes the critical factors that define a stable design:
- Impedance must stay flat across frequency—regulation depends on it
- Decoupling networks are complex; intuition isn't enough
- PCB layout, via, and capacitor placement drive results
- VRM, planes, and ICs interact—simulation reveals those dynamics
- On-die parasitics and tolerances shift resonance points
- Physical testing is costly and limited—analysis shows the full picture
The only way to ensure a stable, low-noise design is to assess the PDN impedance — that's what Power Integrity Analysis does for you.
What Makes Up the PDN?
Every element in your system contributes to power integrity. The Power Delivery Network (PDN) is made up of:
- The die, package, PCB planes, vias, and traces
- The voltage regulator module (VRM)
- Multiple types of decoupling capacitors
Each component adds inductance — even capacitors have their own ESL. The goal is to decouple this inductance and maintain a flat impedance profile to ensure stable power delivery.
Why Power Integrity Matters
Power and signal integrity now share the same stage. When current demand changes rapidly, the inductive nature of the PDN causes voltage droop (L × di/dt). These transients can:
- Create timing errors
- Add jitter to high-speed interfaces
- Shrink system noise margins
Keeping power rail noise within tight limits is essential to reliable, predictable system performance.
Learn MoreThe Real Problem — Transient Noise
The challenge isn't steady-state power — it's the dynamic response.
Transient noise results from the interaction between PDN impedance and fast, high-current loads like FPGAs and memory. As voltages decrease and edges get faster, allowable noise margins shrink dramatically.
Traditional load-step tests no longer tell the full story — what matters is the voltage at the die, not just at the VRM output.
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What AEi Systems Delivers
Why is AEi Systems' PI analysis different?
AEi Systems provides detailed worst case Power Integrity analysis:
- Highly accurate VRM and capacitor models
- Test Data Supported!
- Full PDN simulation and analysis coupled with other regulation related noise sources
- Support for VRM and decoupling optimization
- Target impedance, Q, and transient noise verification
- ADS and Mentor tool integration
- Ripple via Harmonic Balance simulation
How It Works
From model extraction to full PDN simulation.
Using industry tools like Keysight ADS and Mentor Power Integrity Wizard, AEi Systems builds accurate S-parameter models from the die to the VRM. These models capture real-world behavior, supported by VNA measurements to fill data gaps and confirm accuracy.
Both time-domain and frequency-domain simulations verify that your PDN meets design targets — before you spin a single board.
We integrate WCCA into the design workflow, not as an afterthought but as a parallel, data-driven activity that evolves with your circuitry.
Let's Talk
Every project has unique risk and reliability goals. AEi Systems supports WCCA for the Automotive, Space, Nuclear, Medical and other high reliability industries.
We are happy to discuss part tolerances, mission life, specifications, reliability, failure, radiation, and SDRL related questions along with any other project requirements.
Start a discussion about your program requirements.
Get a Quotation
We'll respond within 24-48 hours