Isolated DC/DC converters are designed for railway systems

MinMax has introduced the MIZI03 series of 3.0W isolated DC/DC converters. They are designed to meet stringent railway system requirements and are provided in an encapsulated DIP-24 package.

The MIZI03 power converter series is now available for DC battery bus voltages of 24, 36, 48, 72, 96, and 110V DC, with output voltages of 5.0, 12, 15, 12, and ±15V DC.

The high-performance 3.0W isolated DC/DC power converters comply with railway DC input-voltage range and brief variation requirements in accordance with EN50155 certification, vibration and thermal shock test EN 61371, cooling, dry, and damp heat test IEC/EN 60068-2-1, 2, 30, Railway Certification EN50155 (IEC 60571), and Railway EMC standard EN 50121-3-2.

MinMax adds that the DC/DC power converter series is designed-in conducted EMI filters EN55032/11 Class A and FCC Level A, conforming to voltage isolation requirements EN 61373.

According to MinMax, the MIZI03 series ensures high-grade security of the system by incorporating top-class safety features like voltage output trim and remote power control, along with over-load, overvoltage, short-circuiting, and fire protection approved to the EN45545-2 standards.

The entire MIZI03 series 3.0W isolated DC/DC power converter range has been evaluated based on safety index parameters to ensure reliabile, safe railway operation, says MinMax. The railway-certified DC/DC power modules are vacuum-sealed, using UL94V-0 grade sealants. The vacuum-seal of the DC/DC power converters and the 3,000V AC voltage isolation with reinforced insulation create a robust electrical barrier to secure sensitive circuit load from excess energy mishaps. This ensures the safety of the equipment in rugged, long-term railway operations. Protection features integrated into the DC/DC power converter series include under-voltage, short-circuiting, over-load, over-voltage, and output voltage trim.

The MinMax MIZI03 power modules have a quick start up time of 20milli seconds, claiming to eliminate system timing failure caused due to long start-up times.

The fast start-up time without over-shoot, and protection against converter malfunction protect the system. The environment-friendly technology introduced in the MIZI03 series minimises temperature rises, ensures superior energy savings, and prolongs the railway battery life, says MinMax. The technology enables high efficiency for input lines, output loads, and ambient temperature ranges.

The high-stability feedback loop design of the MIZI03 DC/DC power modules provide consistency even in light or no-load conditions, says the company.

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