Available via older ST application note archives (such as those accompanying AN1072 or AN3168). Note: For any new design, migrating to eDesignSuite is highly recommended to access modern efficiency standards. Step-by-Step Flyback Design Workflow
Isolates switching losses, conduction losses, and snubber dissipation to help engineers target efficiency bottlenecks.
The software plots Bode diagrams automatically, ensuring proper phase and gain margins for the optocoupler and TL431 feedback network. VIPer Design Account Benefits
), output voltage, and output current prompts the software to automatically select the optimal VIPer device. viper flyback converter design software download better
STMicroelectronics website (free registration required).
Comprehensive schematic generation, localized bill of materials (BOM) compilation, transformer construction diagrams, and stability analysis curves.
Viper Flyback Converter design - STMicroelectronics Community Available via older ST application note archives (such
Furthermore, the download and use of updated design software provide critical insights into thermal behavior and efficiency. Modern power supplies must meet stringent energy standards, such as DoE Level VI or EU Code of Conduct. Older calculation methods or outdated software might not account for the latest efficiency requirements at light loads or standby modes. Newer iterations of the VIPER design suite allow engineers to simulate efficiency curves and losses across the entire load range. This capability enables designers to tweak component values—such as snubber resistors or output capacitors—to balance cost with performance before a single prototype is soldered.
Select "AC-DC Converters", enter your target input voltages (e.g., 85–265 VAC), set your required DC output rails, and filter by the VIPer product family . Traditional Manual Calculations vs. Automated Software Design Metric Manual Calculation Method Modern Software Download Method Time Investment Hours spent decoding complex datasheets and math formulas. Seconds to generate a fully tailored schematic. Transformer Design High risk of saturation errors or incorrect turns ratios.
Define voltage and maximum current requirements for all output rails. Select "AC-DC Converters"
4.2/5 (based on ~50 forum comments over 2 years)
For modern designs, you do not need to download anything. Access eDesignSuite directly on the STMicroelectronics website via your web browser. For the legacy software, it can be found on various third-party electronics sites (e.g., CXEM.net), though it is no longer supported by ST.