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Design Tools

A one-stop design toolset built around QST GaN power solutions, covering the two core stages of circuit-level simulation and transformer design. The tools come complimentary with official Demo Boards, dramatically shortening your "select — design — simulate — prototype" development cycle.

Beyond Topology — The Two Hardest Steps, Made Easy by Tools

Beyond Topology — The Two Hard Steps, Solved by Tools

Designing a qualified power supply starts far after topology selection. The two real time-sinks are circuit design simulation — parameter tuning, stress distribution, efficiency optimization — and transformer design simulation — turns ratio, windings, core and copper losses, leakage inductance, EMI behavior. LakeSemi packages both into ready-to-use desktop simulation tools: enter your spec, the tool returns validated parameters you can trust. Pair them with our evaluation demo boards and step-by-step video tutorials, and even a beginner can ship a working power supply in days — no need to spend thousands of yuan on a training course.

1

Pick Topology

Two-stage PFC + QR flyback, single-stage flyback, or synchronous rectification — matched to LakeSemi controllers and GaN devices.

2

Circuit Sim

QR flyback DCM / DCM-L / CCM tri-mode plus an LLC FHA engine — verify operating modes, stress and loss.

3

Transformer Sim

Auto-selects core, computes turns and winding structure, separates core and copper losses, exports production-ready parameters.

4

Optimize

Iterate to the efficiency sweet spot; OCP / OVP / EMI margins closed in one pass.

5

Prototype

Export the full parameter pack, lay it down on a LakeSemi demo board, ship a complete unit in as little as one week.

Design Tools

Design Tools
Power Circuit-Level Simulator UI

Power Circuit-Level Simulator

🎁 Complimentary with Demo Board
Windows · Offline · License Activated

A circuit-level simulation tool for QR flyback and LLC resonant power supplies. With a built-in library of LakeSemi GaN device parameters, it computes everything from operating-mode determination to loss breakdown — every design revision backed by data.

  • QR flyback simulation engine covering DCM / DCM-L / CCM operating modes
  • LLC resonant converter FHA analysis engine
  • iGSE core-loss and Dowell winding-loss models
  • Built-in typical parameters of LAKESEMI GaN devices
Get it with a Demo Board → Full version available exclusively with official Demo Boards
Transformer Design Simulator UI

Transformer Design Simulator

🎁 Complimentary with Demo Board
Windows · Offline · License Activated

A rapid design tool for flyback / LLC transformers: enter the electrical specifications to get turns ratio and winding schemes, with loss estimation and parameter iteration in one place. Design results feed directly into the circuit-level simulator for verification.

  • One-click generation of transformer design parameters from input specs
  • Winding structure and window-utilization checks
  • Separate core-loss and copper-loss estimation
  • Parameters interoperate with the circuit-level simulator
Get it with a Demo Board → Full version available exclusively with official Demo Boards

How to Get These Tools

LakeSemi design tools are not sold separately and not available for public download — they come exclusively with official Demo Boards, so every user gets the complete hardware + toolset design experience.

01Purchase a Demo Board

Choose the official evaluation board for your reference design in the online store or via sales.

02Claim from Sales

Contact sales or customer service with your order number to receive the installer and your dedicated license key.

03Activate & Use

Install on Windows, enter the license key to activate, then run fully offline.

Runs fully offline, no internet required Dedicated license key, one board one license Yours for life, no subscription fees