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Let’s walk through a practical example using the ST eDesignSuite desktop app (which you can download as a PWA). We will design a 12V/2A (24W) isolated flyback using the VIPer27.
Precise core selection and winding strategies automatically generated. Complex Bode plotting and trial-and-error physical testing.
Instantly matching the right VIPerPlus IC (like the VIPer12, VIPer22, or VIPer31) to your power requirements. viper flyback converter design software download better
Originally developed by ST to support the first generation of VIPER devices, it remains a useful utility for maintaining older products or for educational purposes.
The software generates a baseline schematic. You can customize the transformer by choosing specific magnetic core shapes (like EE, EF, or RM cores) and bobbin types. The tool dynamically updates the required primary inductance ( Lpcap L sub p ) and air gap to prevent core saturation. 4. Verification and Export
You can fine-tune the compensation network to ensure your power supply doesn't "whine" or oscillate under load. RDS(on)cap R sub cap D cap S open
I can guide you to the exact VIPer chip model for your project. Share public link
Click on the "Design Tool" launcher. You can choose to run the application directly inside your web browser or download the standalone desktop client for offline engineering work.
VIPER converters use frequency jittering to reduce EMI. Superior software integrates an EMI filter stage calculator (common-mode and differential-mode chokes, X/Y capacitors) based on CISPR 22 / EN 55022 limits. Originally developed by ST to support the first
To achieve the best results, you need the best tool. The market offers several options, from powerful online suites to third-party magnetic simulators. Here is a comparison of the top contenders.
Specify AC minimum and maximum limits (e.g., 85V AC to 265V AC for universal mains).
Navigate to the STMicroelectronics eDesignSuite portal. This tool is available as a robust online workbench, with offline standalone download options available for registered enterprise users.
proprietary tools, which are specifically built to model their "VIPer" (Vertical Integrated Power Energy Regulator) family of high-voltage converters. Recommended Design Software & Tools