Littleton, Mass.—XP Power's MTC series of 4- to 35-watt commercial-off-the-shelf (COTS) DC/DC converters, specifically for defense and avionics applications, touts features virtually unheard of at the low-power levels. These forward converters, working from a 15.5- to 40-volt input, include external frequency synchronization (400-500 kHz), voltage trim (using a voltage source or resistor) and remote-sense circuitry; external control over thermal shutdown (i.e, for the "battle" mode, where the user can't afford to shut down the system); and over-voltage and over-current protection.
Likewise, the company touts the mechanical design of these single-output (3.3, 5, 12, 15 or 28-volt) board-mounted units, in 12 models, as well beyond the requirements of the typical COTS application. The supply has an extruded aluminum (sealed) enclosure with heat dissipating fins to remove heat by convection, plus baseplate for conduction cooling. Power components are bonded to the cooling plate, and no potting compounds are used. The power conversion and control functions are on separate printed circuit boards to conserve board space and maximize power density. These units are rated for operation over -40 to +100°C at the baseplate; specially screened units are available down to -55°C.
The MTC's meet the MIL-STD 810F specification for temperature, shock, vibration, bump, altitude, salt, and humidity. The converters will tolerate a 10-volt transient for 10 seconds and up to 50 volts for one second, in accordance with MIL-STD 704B-F. Input immunity with the supply's complementary MTF filter module, rated at 50 watts, meets MIL-STD 1275A/B and MIL-STD 704A. EMI performance meets MIL-STD 461E with the filter installed.
Both the MTC and MTF are available now. The MTC is priced from $120 each for the 4-watt unit to $260 each for the 35-watt version. The MTFs are $170 each. All prices are based on 100+ quantities.
Click here to access the MTC's spec sheets. Both the MTC and MTF are available now. The MTC is priced from $120 each for the 4-watt unit to $260 each for the 35-watt version. The MTFs are $170 each. All prices are based on 100+ quantities. Contact Duane Darrow.
XP Power, 1-978-287-7260, www.xppower.com