75-W DC/DC converters offers high input range of 155-480-VDC and efficiency up to 92 percent
The MGDS-75-S series have an input voltage range of 155-480 V, making them suitable for 270 V applications such as those needing to meet MIL-STD-704E/F requirements, or for use with Power Factor Corrected front end converters such as Gaia’s HGMS-350 series.
The family consists of 5 individual single output models offering 3.3 V, 5 V, 12 V, 15 V and 26 V outputs, each capable of delivering up to 75 W in the industry standard Quarter Brick footprint of 57.9mm x 36.8 mm x 12.7 mm. The units have ±10 percent voltage trim capability, meaning for example that 28 V applications can also be catered for using the 26 V nominal device.
Efficiency levels are as high as 92 pecent, and the standard operating temperature range is -40 to +105°C case temperature, with an option available for -55°C start up operation if required. The units incorporate a complete suite of protection functions such as under voltage lockout, over voltage protection, current limit and over temperature protection, and all units are permanently short circuit proof.
Designed for high reliability applications, the MGDS-75-S does not use optocouplers in the feedback loop, and operates using a fixed switching frequency of 500 kHz. They can be operated at zero load, and employ soft start circuitry which allows for current limiting, and eliminates inrush current during start up. Multiple devices can be synchronised directly together to force a single overall switching frequency, or can be connected to an external frequency source. For applications requiring increased power levels, an optional parallel pin is offered for direct connection of multiple modules ensuring accurate current share.
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