The international standards for Switch Mode Power Supplies (SMPS) include several key standards that focus on safety, electromagnetic compatibility (EMC), and performance. Here are some of the most relevant ones:
1. **IEC 60950-1**: Safety standard for information technology equipment, including SMPS, addressing electrical, thermal, and mechanical safety.
2. **IEC 62368-1**: A newer safety standard that combines and replaces IEC 60950-1 and IEC 60065, applicable to various types of electronic equipment, including SMPS.
3. **EN 55032**: Standard for electromagnetic compatibility of multimedia equipment, relevant for assessing the EMC performance of SMPS.
4. **EN 61000-3-2**: Standard for limits for harmonic current emissions, important for ensuring that SMPS do not generate excessive harmonic distortion in the power supply.
5. **EN 61000-3-3**: Standard for limits for voltage fluctuations and flicker, addressing issues related to the supply voltage quality.
6. **UL 60950-1 / UL 62368-1**: U.S. safety standards similar to their IEC counterparts, ensuring safety for equipment like SMPS in the North American market.
7. **ISO 9001**: While not specific to SMPS, this quality management standard ensures consistent quality and improvement processes within manufacturing.
8. **RoHS Directive**: Not a standard per se, but compliance is often required for electronic products sold in the EU, limiting hazardous substances in electrical and electronic equipment.
9. **Energy Star**: A certification program that promotes energy efficiency, which many SMPS are designed to comply with for reduced energy consumption.
These standards ensure that SMPS are safe to use, do not interfere with other electronic devices, and operate efficiently.