GAIA Converter has expanded its range of high-power quarter-brick DC-DC converters with the addition of a 250 W output module. The MGDI-254 series is designed for use in distributed power architecture where variable input voltage and transients are prevalent, making them ideal particularly for transportation, railways or high-end industrial applications.
These modules use a high-frequency fixed switching topology at 330 kHz, providing high reliability, low noise characteristics and high power density. The standard models feature a wide input voltage range of 9 - 36 V and transients up to 40 V for 100 ms. The single output features an output trim range of 80% to 110% of nominal, and also includes a sense function.
All modules feature internal LC network filters that minimise reflected input current ripple and output voltage ripple, thus reducing the external filter components and further reducing the bill of materials and real estate. Safety features include input under-voltage lock-out, output over-voltage and over-current protection, and over-temperature protection. Additionally a soft-start function eliminates inrush current during start-up. No optocouplers are used, ensuring high reliability.
The devices are potted with a bi-component thermal conductive compound and use an insulated metallic substrate to ensure optimum power dissipation under harsh environmental conditions.
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