Switching Mode Power Supplies
Use the Mixed-Signal Blockset™ to resolve the mismatch between the fast switching frequency and the comparatively slower output frequency of the SMPS circuits. The SMPS objects and functions accomplish the speed matching by solving the circuit in each switch state before simulating the circuit and leveraging those solutions to guide the simulation. This approach reduces the simulation cost present in traditional circuit simulation techniques.
After simulating your circuit, you can validate your design using Measurements and Testbenches. You can also analyze your models using MATLAB® functions. For more information, see Analysis and Optimization.
Objects
cktconfig | Create circuit configuration object (Since R2026a) |
circuitWizard | (Not recommended) Build block or analyze circuit from circuit object (Since R2025a) |
Functions
cktblock | Create linear circuit or switched circuit block (Since R2026a) |
cktoperpoint | Operating point analysis of switched circuit (Since R2026a) |
cktssmodel | Small signal control model of linear circuit (Since R2026a) |
cktzpk | Zeros, poles, and gains for linear circuit (Since R2026a) |
ckttbl | Table of circuit elements from circuit configuration object (Since R2026a) |
ssc2cw | (Not recommended) Create variable and statement structures from circuit diagram (Since R2025a) |
Topics
- Loop Gain Calculation for Current-Programmed Mode Control of Switched-Mode Power Supplies
Simplified control loop analysis of a current-programmed mode(CPM) with power train and pulse width modulator.
- Simscape Automation Using Command Line Interface
Extract circuit topology from Simscape™ for mathematical analysis.
Featured Examples
Class D Amplifier with DSM Filter
Model a class D amplifier and embed that amplifier in a delta-sigma modulator (DSM) filter using the Mixed-Signal Blockset. Many audio amplifiers use a class D amplifier as their output stage, and some of those audio amplifiers have very high fidelity requirements. One of the ways to increase the fidelity of a class D amplifier is to embed it in a DSM filter. This example offers you efficient methods for modeling such a circuit and optimizing its performance.
Feedback Amplifier Design for Voltage-Mode Boost Converter
Tune the components of a power supply controller to control the output voltage of a boost converter using loop-shape design and fixed-structure tuning methods. This workflow is demonstrated using a boost converter model and a type-III controller.
Boost Power Train Operating Point Analysis
Analyze the operating point of a power train for a boost switched-mode power supply (SMPS) using behavioral circuit modeling and analysis tools from the Mixed-Signal Blockset™.
Boost Power Train Design Workflow
Design a power supply with a boost power train for a specific operating point, control the output voltage, and perform time-domain simulations.
Boost Converter Controller Design Using Closed-Form Circuit Solution
Tune the gains of a digital controller to control the output voltage of a boost converter in the presence of load current disturbances.
Buck Power Train Design Workflow
Use the MathWorks® switched mode power supply (SMPS) workflow to design a power supply with a buck power train.
LLC Resonant Converter Operating Point Analysis
Perform the operating point analysis of an LLC resonant converter power supply using the Mixed-Signal Blockset™.
