400-W/600-W modular power supplies
Staff -- Test & Measurement World, 2/1/2007
The Xhite series of modular power supplies from Excelsys offers full load operation up to 70°C, making the supplies suitable for operation in harsh environments that have high ambient temperatures and wide temperature fluctuations. The series comprises two PowerPac chassis, with ratings of 400 W or 600 W, and a complete family of field-configurable plug-in DC output modules. The PowerPacs accept universal input from 85 VAC to 264 VAC with plug-in modules offering single and dual outputs ranging from 1.5 VDC to 58 VDC. All configurations are RoHS-compliant, approved to UL60950/EN60950 safety standards, and are rated for EN55022/FCC Level B conducted and radiated emissions.
Xhite power supplies employ a two-transistor forward-converter front end and zero-voltage resonant switching with plug-in DC output modules that use planar magnetics, surface-mount components, and high-efficiency DC/DC conversion techniques. The supplies are packaged in a compact 9.85x5.00x1.57-in. form factor.
DC outputs are floating with no minimum load requirements, ±0.1% line regulation, and ±0.2% load regulation. Outputs can be connected in series or parallel for increased power, and they feature comprehensive protection against over-voltage, over-current, and over-temperature conditions. Standard signal options include mains power fail, global inhibit/enable, 5-V standby, output power good, output inhibit/enable, remote sense, and remote adjust.
Excelsys Technologies, www.excelsys.com.
