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Utilities PowerTop 10 Best Power Supply Design Software of 2026
Power supply design software roundup comparing software like WEBENCH Power Designer for PSIM workflows, features, and selection tradeoffs.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
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Framework: Features 40% · Ease 30% · Value 30%
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WEBENCH Power Designer is the best pick for TI-centric teams because its TI device library-backed calculations turn your electrical constraints into candidate component selections and performance plots fast, while PowerEsim is a solid alternative for teams that need consistent variant-driven simulation workflows across many design iterations.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
WEBENCH Power Designer
TI device library-backed WEBENCH calculations that output candidate component selections and performance plots from entered electrical constraints.
Best for: Fits when TI-centric teams need fast, constraint-driven power architecture exploration for PCB builds.
PowerEsim
Editor pickVariant-driven model and measurement generation keeps each iteration’s assumptions consistent across analyses.
Best for: Fits when teams need repeatable power-supply simulation workflows across many design variants.
PLECS
Editor pickHierarchical PLECS models package converter subcircuits and control blocks for repeated variant simulation.
Best for: Fits when converter teams need rapid switching simulation and model reuse before schematic and layout lock-in.
Comparison Table
WEBENCH Power Designer
vertical specialistOnline power supply design environment for TI converters, sequencing, filters, and simulation.
TI device library-backed WEBENCH calculations that output candidate component selections and performance plots from entered electrical constraints.
WEBENCH Power Designer from TI generates complete analog power-system design candidates using TI device libraries and constraint-driven calculations. It produces component-level and operating-point outputs that cover switching regulator design, linear regulator design, and transformer design workflows.
It also ties design results to device selection and reference performance plots, which reduces manual cross-checking across candidate parts. For PCB power design teams, it acts as a calculation and options workflow generator that complements schematic tools rather than replacing them.
- +Constraint-driven design generation using TI component libraries and limits
- +Works directly from converter-level specs to produce actionable part selections
- +Generates reference plots that support early efficiency and operating-point checks
- +Supports magnetics and topology sizing workflows for transformer-based designs
- –Design output depth can lag full PCB-level detail for layout-driven constraints
- –Workflow depends on TI device availability and library coverage
- –Large design sweeps can be slow without disciplined spec scoping
- –Cross-tool handoff to schematic and layout still requires manual data mapping
Power electronics designers
Switching regulator design candidate generation
Design margins from simulation outputs
PCB power design teams
Transformer and linear regulator workflows
Fewer manual design revisions
Show 1 more scenario
Verification engineers
Corner-like constraint-driven variants
Quantified sensitivity across options
Runs constraint-driven calculations to compare candidates across operating requirements with reference performance context.
Best for: Fits when TI-centric teams need fast, constraint-driven power architecture exploration for PCB builds.
PowerEsim
engineering simulationCloud design platform for power electronics with electrothermal simulation and AI-assisted optimization.
Variant-driven model and measurement generation keeps each iteration’s assumptions consistent across analyses.
PowerEsim targets engineers who need fast iteration across design alternatives without manually wiring every simulation step. It generates structured models and measurement setups that support efficiency checks, stability work, and performance validation runs tied to the same input configuration. The tool fits teams that rely on versioned design variants for review cycles and engineering handoffs.
A practical tradeoff is that deep customization of the underlying models can be limited when compared with fully manual SPICE scripting or simulator-native workflows. PowerEsim works best when a team can express requirements in the tool’s parameterization and then run the standard analysis set for each variant.
- +Automated testbench generation reduces time spent on repetitive runs
- +Design variants keep requirements linked to downstream simulations
- +Control-loop workflow supports structured stability and performance checks
- +Outputs are organized for review cycles across iterations
- –Model-level customization can be constrained versus direct simulator control
- –Advanced corner-case analysis often needs extra manual steps
- –Power-user automation beyond the provided workflow can be limited
Power design engineers
Iterate converter specs across design variants
Faster trade studies
Electronics teams
Standardize validation for design reviews
More consistent sign-offs
Show 1 more scenario
System integration teams
Reuse requirements across board constraints
Lower rework
Rebuild simulation models from stored requirements to test updated constraints.
Best for: Fits when teams need repeatable power-supply simulation workflows across many design variants.
PLECS
engineering simulationModeling and simulation software for power electronic systems, controls, and thermal behavior.
Hierarchical PLECS models package converter subcircuits and control blocks for repeated variant simulation.
Engineers typically use PLECS to model switching regulator design, including non-isolated and isolated converter topologies, then simulate operating points under defined loads and inputs. The model editor supports hierarchical subsystems so magnetics and control sections can be packaged for reuse across variants. Simulation results include time-domain waveforms and summary measures that help compare duty changes, load steps, and startup transients.
A tradeoff is that PLECS concentrates on converter simulation rather than production electronics design-rule checking, so PCB layout constraints still require separate EDA tools. It fits when a team needs to iterate control-loop compensation and component selections quickly, then hand off finalized topologies and parameter values to schematic and layout workflows.
- +Graphical converter modeling with hierarchical subsystems for reusable design blocks
- +Switching time-domain simulation with practical device and component libraries
- +System-level parameterization that supports variant runs without rebuilding models
- +Waveform and performance outputs that map to common converter validation checks
- –Less coverage for PCB layout constraints and design-rule checking workflows
- –Deep model fidelity can require careful setup to avoid misleading switching artifacts
- –Automation and external integration depend on established PLECS scripting workflow
- –Large hierarchical models can become slow when switching events are frequent
Power electronics engineers
Validate isolated converter startup and transients
Faster transient design decisions
Control and firmware teams
Tune control-loop compensation in models
Lower iteration cycle time
Show 1 more scenario
System design groups
Compare design variants across operating points
More consistent tradeoff comparisons
Run parameterized model variants to evaluate efficiency trends under different inputs and loads.
Best for: Fits when converter teams need rapid switching simulation and model reuse before schematic and layout lock-in.
REDEXPERT
vertical specialistComponent selection and power magnetic design suite for Würth Elektronik parts.
Parameterized converter and magnetic component sizing workflow that keeps design decisions consistent across variants.
REDEXPERT from we-online.com performs power-supply design work that focuses on parameterized converter and magnetic component sizing workflows. It supports guided configuration of converter blocks and lets designers carry decisions through schematic generation and documentation-oriented outputs.
- +Guided topology-to-parameter workflow reduces manual sizing steps
- +Repeatable configuration supports variant generation for design-point sweeps
- +Output-focused documentation reduces friction in handoff packages
- +Constraint-driven calculations align component choices with layout limits
- –Limited visibility into low-level SPICE setup compared with simulation-first tools
- –Automation-heavy workflow can slow down unconventional topology experimentation
- –Control-loop design depth needs external tools for detailed compensation work
- –Integration and data exchange depend on a consistent export process
Power engineers
Switching circuit sizing and selection
Consistent sizing across variants
Verification engineers
Parameter-driven corner comparisons
Quantified sensitivity and corners
Show 1 more scenario
Power electronics designers
Magnetics sizing for handoff
Repeatable documentation for design transfer
Guides configuration of converter and magnetic sizing workflows to produce documentation-friendly outputs for PCB handoff.
Best for: Fits when teams need standardized PCB power design outputs for multiple converter variants and board constraints.
Power Stage Designer
vertical specialistFree calculation and design tool for analog power supply circuits from Microchip.
Guided selection links power-stage requirements to Microchip part-level choices and constraint outputs.
Power Stage Designer uses a structured input flow to tie electrical targets to component-level selections, including how switching elements affect losses and operating limits. It also produces outputs aimed at moving from selection into implementation, such as recommended parts and design numbers that can feed magnetics and layout decisions. For teams using Microchip power components, it reduces the iteration loop between datasheet parameters and board-level constraints.
- +Constraint-aware component selection that ties electrical targets to device limits
- +Outputs that are practical for early PCB planning and magnetics direction setting
- +Guided workflow reduces time spent converting requirements into design parameters
- +Microchip device alignment supports faster iteration for vendor-specific BOMs
- –Best coverage when designs use Microchip power components and device families
- –Control-loop compensation and advanced stability analysis require external tools
PCB power design engineers
Drafting a buck power stage BOM quickly
Fewer rework loops on BOM
Product engineering teams
Standardizing parts across board variants
More consistent board-level results
Show 1 more scenario
Systems teams defining power rails
Sizing currents and thermal limits for rails
Clear component feasibility
Translate rail targets into power stage parameters that match the selected device constraints.
Best for: Fits when teams want faster, vendor-aligned power stage sizing for PCB layout planning.
MPSmart
vertical specialistOnline design tools for power converters, LED drivers, and power modules from Monolithic Power Systems.
MPSmart’s part-centric configuration outputs design-ready electrical values matched to Monolithic Power Systems component parameters.
MPSmart from monolithicpower.com targets power supply design workflows that depend on Monolithic Power Systems IC data and parameterization.
- +Parameter-driven component selection tied to Monolithic Power Systems parts
- +Design output values reduce spreadsheet transcription for PCB build targets
- +Topology and operating-point configuration supports quick iteration cycles
- +Includes handoff-ready data intended for downstream simulation and layout checks
- –Coverage is strongest for Monolithic Power Systems device families
- –Advanced control-loop modeling depth can lag dedicated analog design tools
- –Limited visibility into full layout constraint impacts during early electrical sizing
- –Automation surface is oriented toward generated values rather than API-first integration
Power engineers
IC-aligned switching supply configuration
Faster IC-to-circuit convergence
SPICE verification teams
SPICE-ready design number transfer
Less rework before simulation
Show 1 more scenario
PCB constraint reviewers
Constraint checks from configured outputs
Cleaner handoff to layout checks
Supplies parameterized component values that can be used for PCB constraint checks tied to the design configuration.
Best for: Fits when teams design with Monolithic Power Systems ICs and want faster value generation than spreadsheets.
Power Supply Design Tool
vertical specialistInteractive design environment for selecting and configuring ON Semiconductor power solutions.
onsemi part-linked worksheets that translate electrical targets into component selection and simulation-ready design data.
Power Supply Design Tool from onsemi focuses on converter design guidance tied to onsemi power components. It provides worksheets that move from electrical requirements into selection-oriented outputs for common DC-DC and AC-DC configurations.
- +Component-referenced design guidance for onsemi parts reduces mapping work
- +Built-in SPICE support supports faster iteration on switching behavior
- +Constraint-driven worksheets reduce spreadsheet-to-layout translation errors
- +Outputs align with real converter build steps like selection and verification
- –Limited visibility into full schematic-to-PBC design-rule checking workflows
- –Automation depth is worksheet-centric, with less programmable API surface
- –Few topology expansion paths beyond the tool’s supported design flows
- –Thermal and EMI assessment depth can lag dedicated lab-grade tools
Power electronics designers
DC-DC converter sizing from requirements
Selection-ready component guidance
Power stage modelers
SPICE simulation setup from worksheets
Validated performance targets
Show 1 more scenario
Verification engineers
Component-level checks against constraints
Fewer errors during iteration
Captures sizing constraints and provides component-level checks to reduce manual spreadsheet handoffs.
Best for: Fits when teams need onsemi-aligned power-supply worksheets and verification for PCB prototypes.
SIMetrix
SMBSPICE simulation and schematic capture platform used for analog and switched-mode power supply design.
MATLAB-like parametric sweep workflows for running structured scenario sets and comparing transient results quickly.
SIMetrix is a circuit simulation and power design workflow tool focused on mixed-signal analysis for converter and regulation architectures. It supports SPICE-based modeling workflows for analyzing control-loop behavior, component stress, and transient performance across operating points.
- +SPICE-oriented power stage testbenches for repeatable transient and stability checks
- +Parameter sweeps support fast trade studies on compensation and operating conditions
- +Mixed-signal friendly modeling for controller plus power stage co-simulation
- +Model reuse reduces rework across topology variants and controller revisions
- –Less dedicated PCB power design workflow compared with integrated EDA flows
- –Schematic driven workflows rely on external drafting rather than native constraint checks
- –Large models can increase runtime when sweeping many parameters
- –Automation depth depends on scripting rather than a built-in orchestration UI
Power electronics designers
Testbench simulation of control behavior
Waveforms for stability insight
Verification engineers
Parameter sweeps for design corners
Performance envelopes with sensitivity
Show 2 more scenarios
Analog and mixed-signal engineers
Behavioral model and stimulus reuse
Reusable test conditions
Uses behavioral sources and scripted stimuli to build reusable test conditions for model and subcircuit verification.
Analog design teams
Pre-system analog verification of circuits
Earlier detection of circuit issues
Validates component-level behavior and identifies circuit issues before models or results feed broader system studies.
Best for: Fits when teams need SPICE-based power electronics testbenches for converter and controller validation.
SIMPLIS
engineering simulationPiecewise-linear simulation platform for fast power electronics and SMPS analysis.
Built-for-purpose power converter simulation focused on closed-loop time-domain behavior across operating conditions.
SIMPLIS is a power supply design and simulation tool that focuses on converter system behavior and control-loop dynamics. The workflow emphasizes circuit-level setup for linear and switching regulator design, then runs time-domain converter simulations that capture startup, fault, and transient response.
- +Time-domain converter simulation captures startup and load-step behavior
- +Closed-loop stability checks align with control-loop compensation iteration
- +Power-stage oriented modeling reduces friction versus general-purpose SPICE
- +Study runs support repeatable parameter sweeps for transient comparisons
- –Schematics and netlists still require careful model mapping for complex systems
- –Less suitable for deep mixed-signal co-simulation outside power converter scope
Power electronics engineers
Designs converter control loops
Faster stability sign-off
IC designers and system architects
Co-designs controller and power stage
Reduced integration surprises
Show 2 more scenarios
SMPS design teams
Investigates fault and recovery
More reliable fault handling
Runs time-domain simulations to assess overload, protection events, and recovery trajectories.
Multi-rail product development
Studies sequencing and interaction effects
Lower cross-rail instability risk
Runs repeatable simulations across rails to analyze interaction during startup and load steps.
Best for: Fits when control-loop tuning and transient verification drive power supply design decisions.
SIMPLIS
vertical specialistSwitch-mode power supply simulation software for fast time-domain analysis and design verification.
Switching power converter oriented time-domain simulation that focuses on transient and loop behavior instead of generic SPICE event traces.
SIMPLIS produces time-domain behavior for switching power converters from schematic-level designs, then links results back to design iterations with fast simulation turnaround. The workflow supports switching regulator design tasks such as closed-loop performance and transient checks for DC-DC converter and AC-DC power supply circuits.
- +Switching-converter time-domain simulation emphasizes transient behavior under load steps
- +Control-loop oriented workflows support compensation tuning and stability-oriented checks
- +Reusable model libraries speed repeated analysis across similar converter designs
- +SPICE model integration supports detailed component and semiconductor behavior
- –Schematic-to-simulation setup requires disciplined stimulus and probe placement
- –Advanced customization can demand familiarity with simulator configuration conventions
Power electronics designers
Closed-loop transient validation
Stability and response confirmation
Control-loop compensation engineers
Compensation tuning with fast iterations
Faster compensation convergence
Show 1 more scenario
SPICE integration teams
Refining component behavior with models
More realistic device effects
Interfaces with external SPICE models to refine semiconductor behavior beyond idealized blocks.
Best for: Fits when teams need fast switching-converter validation and control-loop tuning tied to schematic iterations.
Conclusion
After evaluating 10 power supply design software, WEBENCH Power Designer stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
Frequently Asked Questions About Power Supply Design Software
How does PowerEsim keep design intent linked to simulation artifacts across many topology variants?
Which tool supports converter-level hierarchical model reuse for repeated switching studies without rebuilding every subsystem?
When does WEBENCH Power Designer fit better than general schematic-centric PCB workflows for power architecture exploration?
What breaks if control-loop compensation tuning depends only on SPICE event traces instead of time-domain closed-loop simulation?
Which tool outputs constraint-oriented power stage and packaging guidance mapped to a specific semiconductor vendor’s parts?
How do MPSmart and Power Supply Design Tool differ in how they translate component data into design-ready values?
How does SIMetrix connect parametric sweeps to measurable transient and stability outcomes for converter and controller validation?
Which tool is best suited for converting topology-level decisions into documentation-oriented schematic generation and repeatable PCB handoff outputs?
How do teams usually validate transformer or magnetic component sizing inputs across calculation tools and simulation tools?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
How to Choose the Right Power Supply Design Software
Options diverge most in how well they manage **simulation model fidelity** and how consistently they carry your assumptions from schematic to results. In practice, **import/export file support** and **library coverage** decide whether the tool matches your workflow or forces rework.
Simulation model fidelity
Why it matters
Simulation model fidelity matters because power supply design work depends on assumptions matching reality. If the model is too generic, your “good” design can fail when you build and test.
How to check
Open the software’s example project and run a simulation with its default settings. Then change one load or operating condition and confirm the results update in a way the documentation describes.
Import/export file support
Why it matters
Import/export file support matters because teams rarely start from a blank project. If the tool can’t exchange netlists, component data, or results, you end up duplicating work.
How to check
Ask for a demo that brings in an existing design file (netlist or BOM export) and shows the mapping to the design in the tool. Then export results (report and key plots or tables) and check that they match the demo’s stated fields.
Component and topology library coverage
Why it matters
Library coverage matters because power supply design inputs are only as complete as the parts and constraints you can represent. Gaps cause manual edits that can quietly change outcomes.
How to check
During the demo, search for the device families you expect to use and confirm parameters can be edited where the docs promise. Also verify the tool offers constraint templates you’d actually use (for example, component ratings, package, or equivalent parameters).
Limits and constraint handling
Why it matters
Limits and constraint handling matters because designs fail on boundaries like current, temperature, and voltage margins. A tool that can’t express limits cleanly forces spreadsheet work or manual checking.
How to check
Find a screen where you set operating limits (such as input range, output load, and allowable component temperature or current). Then show what happens when a limit is exceeded—does it flag the issue in the report and point to the offending stage or component?
API and automation for design runs
Why it matters
API and automation for design runs matters because power supply work is iterative and repeatable. If there’s no automation surface, teams can’t standardize runs across projects or engineers.
How to check
Ask whether the tool supports scripting or an external API for kicking off design runs and retrieving reports. In a demo, show a workflow that reruns a design and produces comparable output without clicking through every screen.
Results traceability to inputs
Why it matters
Results traceability matters because you need to explain why a change moved efficiency, margins, or stability. Without traceability, reviews become guesswork and documentation degrades quickly.
How to check
Choose one input parameter (for example, load condition or component parameter) and re-run. Confirm the report links the resulting figures and pass/fail checks back to the exact inputs and settings you changed.
Red flags
- Simulation results that don’t respond predictably to changed operating conditions
- Exports that omit key assumptions, units, or mapping details from the design
- Libraries that lack your expected component families, forcing many manual edits
Fit by situation
- If you reuse prior designs and want less rework when you change operating points, prioritize simulation model fidelity.
- If your team already has netlists, BOMs, or existing data formats, prioritize import/export file support.
- If you run design iterations often and need consistent reporting for review, prioritize results traceability to inputs.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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