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PowerViews
November 12, 2012
IEC SC22E Strives for a General Switch-Mode Power Supply Standard
Clemens Klemm
Product Manager for Power Supply Products, IEC
Power Channels: Digital Power, Energy Efficiency, European Power News, Power Components, Renewable Energy, Smart Grid Power, Switch-Mode Power
The International Electrotechnical Commission IEC SC22E has published a “New work Item proposal” (NWIP) Number 22E/142/NP, which will be open until 2013-01-04 for voting. The power supply manufacturers and all other interested parties are invited to support this work by supporting the NWIP and sending experts.
SC22E, responsible for international standards for all aspects of low voltage stabilized DC power supplies, launched the initiative for preparation of a new standard for stabilized power supplies.
Stabilized power supplies have reached enormous adoption in powering electrical devices and converting existing supply voltages into the voltages required by the system and provides a steady, regulated output voltage or voltages used extensively both in consumer – and industrial applications. Every household has countless numbers of power supplies for computers, mobile phones and home entertainment devices. They are embedded into our daily life and no one would question their importance. In industrial applications their likelihood of occurrence is at least comparable. Machines and industrial plants are literally stuffed with electronic devices. To keep them running reliably, and in a small form-factor, power supplies are usually built-in. Furthermore medical equipment, measurement control and laboratory equipment is strongly linked with the usage of specialized power supplies designed for high isolation and accuracy. The overall market for power supplies is amounting billions of US $.
During the last few years, information technology equipment (ITE) and multimedia devices have become pervasive in our daily lives. Because of this, the ITE standard (IEC 60950-1) became the most widely used standard worldwide. This was the reason the already existing SC 22E standard for power supplies (IEC 61204-7, published in 2006), covering safety aspects of power supply applications in one document, was based firmly on the ITE standard.
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