(Switched-Mode Power Supply) and analog ICs. It is useful for validating the transient behavior of your VIPer Design Software (Legacy versions) : Older standalone software like VIPer Design Software Version 2.24 was popular for chips like the
The next generation of "better" software (currently in beta for some European power supply houses) incorporates trained on thousands of successful VIPER flyback designs. These tools will:
4. How to Download and Start Using the Better Design Software
If you are looking to build a "better" converter in terms of size, look into the family. These chips integrate Gallium Nitride (GaN) transistors. Using the specific design software for VIPerGaN allows you to design ultra-small chargers and adapters that run much cooler than traditional silicon-based flybacks. Tips for a "Better" Flyback Design viper flyback converter design software download better
Modern energy-saving standards (like DoE Level VI and CoC Tier 2) require extremely low standby power. VIPER devices feature burst mode operation under light-load conditions. In burst mode, the average switching frequency drops significantly as the load decreases, cutting switching losses. To achieve sub-30mW standby power (as seen in the VIPER35), the control loop should be designed to require minimal sustaining power at the secondary side.
eDesignSuite has continued to evolve: recent versions have improved error handling for quasi‑resonant flyback applications and enhanced transformer development workflows. It is the recommended starting point for any new VIPer‑based project.
For engineers requiring local access without a continuous internet connection, standalone launcher packages and design aids can be downloaded directly from the ST standard software repository. Step-by-Step VIPer Flyback Design Workflow (Switched-Mode Power Supply) and analog ICs
What are your strict or efficiency targets ?
. By downloading the specific VIPer SPICE models from the ST website and importing them into these tools, you can perform deep-dive analyses on transient responses Bode plots for stability, and thermal behavior
: The software leverages the frequency jittering features of the VIPerPlus family to help your design meet electromagnetic disturbance standards without bulky filters. Pros and Cons How to Download and Start Using the Better
The software will propose a secondary rectifier (e.g., STPS20L60 for low Vf) and output capacitor bank (e.g., 2x 1000uF low ESR). For isolated feedback, it calculates the TL431 and optocoupler (e.g., PC817) bias resistors.
Selecting the right design software ensures accurate transformer calculations, proper printed circuit board (PCB) loop minimization, and robust snubber circuit optimization. The Core Software: STMicroelectronics eDesignSuite