AN2864 Datasheet, PDF (26/29 Pages) STMicroelectronics – VIPER17L demonstration board with wide-range

Conclusion
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Conclusion
AN2864
This application note examines the issue of minimizing the power consumption of a flyback
converter in light load or no load conditions, and provides some practical design guidelines.
The advantages of using the new VIPER17L device for this purpose are highlighted and an
optimized demonstration board (order code STEVAL-ISA058V1) for standby consumption is
presented. The measured performance is very good; for example, no load input power of 25
mW at maximum line (265 V_AC). The efficiency is also good and compliant with EPA 2.0
external power supply requirements.
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Doc ID 15282 Rev 1