250-Watt DC-DCs Encapsulated for Harsh Environments

February 27, 2015 By admin Comments are Off

VPT, Inc. introduced the availability of the VPT250-2800S Series of single-output 250-Watt isolated dc-dc converters to its high-reliability COTS VPT Series product line. The VPT250 is uniquely designed for the increasing power conversion needs in military vehicles, ships, weapons, and other rugged systems requiring high reliability solutions. Featuring VPT’s proprietary six-sided encapsulated package with an integral metalized EMI shield, the VPT250 Series is fully compatible with aqueous cleaning processes and is specifically intended for programs with harsh environments such as severe shock, vibration and thermal stresses.

The VPT250 features a wide input voltage range (16 to 40 Volts per MIL-STD-704 and MIL-STD-1275) and delivers 250 Watts at efficiencies up to 92% from -55 to +100 degrees C. Utilizing VPT’s proven design heritage, synchronous rectification topology and thermally conductive epoxy encapsulated packaging, the VPT250 Series provides high efficiency fixed-frequency operation, low input and output ripple, and superior thermal dissipation. Additionally, the VPT250 provides parallel current-sharing capability up to 1,250 Watts.

“The VPT250 provides design engineers with 25 percent more power in the same package envelope while improving electrical performance in key areas. Our new epoxy encapsulated packaging provides the VPT250 with an integral EMI shield, protection from cleaning or application solvents and chemicals as well as the option of thermal conduction from either the top or bottom surface,” said Monty Pyle, Vice President, Sales and Marketing for VPT, Inc. “Our customers said they need more power in the same space, impervious packaging and greater mounting flexibility without compromising electrical performance. The VPT250 checks all those boxes and more.”

source: http://www.powerpulse.net/story.php?storyID=31678

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