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Small ac/dc supply for telecom delivers 1kW

Posted: 15 Jan 2002 ?? ?Print Version ?Bookmark and Share

Keywords:online power supply? distributed power magnetics? ops 1000 48? ac/dc supply? power supply?

OnLine Power Supply Inc. touts proprietary distributed-power magnetics technology as key to the size, weight and reliability advantages of its OPS-1000-48 ac/dc supply, which delivers up to 1kW at 48V from a 180Vac to 240Vac input. The supply is designed for OEM telecom and data storage applications.

The unit fits in a package measuring 203.2-by-127-by-40.64mm and weighing about 1kg. This equates to a power density of about 15W/inch2 in typical operation. "A [systems] manufacturer can fit three of our power supplies in the same space it currently takes for just one of the competition's products," said Steve Watt, 48V project manager at OnLine Power.

Typical competing units at 500W weigh 1.8kg to 2.8kg, he said.

"System designers will have two to three times more power in the same footprint. This frees up room for more components, or allows for a smaller overall product," said Watt. That will benefit the data center manager whose primary concern is total cost of ownership, he said.

Electrical specs of the PFC supply (>0.95 percent) include an efficiency exceeding 91 percent at 240Vac, line and load regulation of 110 percent, and ripple of 1.5V at 1kW. MTBF is said to be >1 million hours.

Operating temperature range is -250C to 650C baseplate. Maximum input current is 5.5A. Overvoltage and thermal protection are provided, with no thermal derating and no internal fan or forced air required.

The OPS-1000-48 supply carries a one-year warranty. It is priced at $1,250 in unit quantities.

EE Times

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