November 2024

Model of the Month

Modeling a digital low-dropout (LDO) regulator

This application note explains how to model a basic digital LDO and simulate its line, load, reference transient and DC/AC regulation characteristics.

Tip of the Month

A common mistake when modeling a high-pass filter with the 'filter' primitive

For high-pass filters, the 'gain' parameter of the 'filter' primitive does not directly define the passband gain. This Q&A post explains how to set its parameters correctly.

Primitive of the Month

filter

This core primitive of XMODEL can model a linear filter with arbitrary numbers of poles and zeros.

Latest Issues

March 2025

Silicon Photonics Simulation with XMODEL, Measuring I-V Curves, and More

February 2025

Catching Elusive Voltage Spikes with Assertions, Modeling VCO with Extra Digital Inputs, and More

January 2025

Modeling Delta-Sigma Digital-to-Analog Converters, XMODEL at DVCon US, and More

December 2024

Modeling Mixed-Signal Processing-in-Memory Circuits, Filtering Phase Noise, and More

November 2024

Modeling a Digital LDO, Tips on Modeling High-Pass Filters, and More