Power supplies meet strict EMI & EMC parameters

3rd September 2015
Posted By : Siobhan O'Gorman
Power supplies meet strict EMI & EMC parameters


Power supply series that comply with the U.S. Department of Energy’s level VI efficiency requirements and provide enhanced performance to meet strict EMI and EMC parameters have been introduced by SL Power Electronics.

This high-performance design makes the TE60 series and the TB65 series suitable for use with handheld test and measurement and industrial devices, where low noise and rugged performance are required.

In addition to Level VI compliance, equipment designers will appreciate that the devices meet the industrial levels of EMC per EN61000-4-X, protecting end-use equipment from harsh electrical environments. Moreover, the power supply designs utilise high-quality electrolytic capacitors, ensuring greater than seven-year product life. Low common mode noise, level 4 ESD protection (IEC61000-4-2: 8kV/15kV) and surge protection (IEC61000-4-5: 1kV CM/4kV DM) help to ensure the highest overall performance.

The desktop and wall plug models offer regulated output power with low ripple, no-load power consumption of more than 0.5W, and short circuit and thermal protection. They include Class B EMI filtering with a minimum of 6db (conducted) and 3db (radiated) margin and a convenient IEC AC 320 C14 grounded input connector that can accept input line cords with any appropriate plug configuration.

For internal power, the TB65 models offer up to 90% efficiency and a very compact form factor. The 65W power supplies are the suitable power solution when very high efficiency and superior EMI and EMC performance are required. Measuring only 2.0x3.5x1.3”, suitable for use in a 1U chassis, the devices provide up to 65W of convection-cooled output power. The TB65 internal power supply is compliant to high levels of EMC per EN61000-4 and meets Class B conducted EMI with 6db margin and Class B Radiated EMI with 3db margin. Feature rich with up to 90% efficiency, designers of test equipment will especially appreciate the greater than 10-year life, based on e-cap calculations.

The TB65 models feature a universal input of 90 to 264VAC and are available in outputs of 12, 15, 24 and 48V. DC OK Signal and PSU temperature monitoring signal are standard offerings. All models are CE marked to low-voltage directive and approved to ITE standards of CSA/EN/IEC/UL60950-1, 2nd Edition, Am. 2.

Both product families are available now through SL Power’s worldwide distribution sales channels and feature an industry leading three-year warranty. The TE series models pricing starts at $22.00 each in production quantities and the TB65 models start at $35 each in OEM quantities.

“Our newest external and internal power solutions have been specifically designed to meet test equipment designers’ need to solve challenging issues with EMI, EMC, ESD, surge and radiated noise,” said Paul Kingsepp, Product Manager, SL Power Electronics. “Our high performance TB65 internal models address problematic interference and susceptibility issues ensuring smoother end-product design and faster go-to-market time. Our new TE Series models are the perfect external power supply solution when the highest level of efficiency, EMI and EMC performance are required.”

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