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Convection-cooled power supply suits apps without internal fans

Posted: 27 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:power supply? power management? XP Power? convection-cooled power supplies? power supplies?

Convection-cooled power supply from XP Power

XP Power announced availability of the SDS150, a convection-cooled power supply that is suited for IT and industrial applications where space is at a premium and there are no internal fans. Both open-frame and U-channel models can be used in 1U customer applications. The open frame model, 76-by-127-by-36mm, offers power density of 6.9W per cubic inch and the U-channel, 81-by-127-by-39mm, density is 6.1W per cubic inch. The unit has efficiency of up to 90 percent and has a universal input of 90-264Vac. There are 8 single-output voltage versions ranging from 9Vdc to 48Vdc. No minimum load is required for the unit to start up and maintain stated specifications.

The SDS150 operates at full power from 0 to 50C and up to 70C with derating. The unit benefits from overvoltage, overcurrent and short circuit protection in order to safeguard connected equipment. An optional power-fail detect signal can alert attached hardware of any impending power failure. Unit efficiency is improved by the use of synchronous rectification. This technique uses power MOSFETs in place of traditional diodes as active switches. Such controlled switches act as rectifiers and results in lower losses in the output stage. The power supply is approved to UL60950-1 & EN60950-1 safety standards and meets EN55022 level B conducted emissions standards.

The device is available today at $92.30 each in 1,000-piece quantities.

- Emily Gleason

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