- July 24, 2018
July 24, 2018 - Taiwan-based power solution provider, MINMAX Technology has released a range of industry standard quarter brick DC-DC converter modules — the MTQZ50 and the MTQZ75 — specifically designed for railway applications. MINMAX's DC-DC converter modules, the MTQZ50 and the MTQZ75, conform to railway emission standard EN 50121-3-2, as well as railway safety standards EN50155 and IEC 60571. In addition, the DC-DC converters also adhere to vibration and shock standards specified by EN 61373, environmental standards IEC/EN 60068-2-1,2,30, and fire protection standards EN45545-2.
The MTQZ50 and MTQZ75 DC-DC converter series, comprising of 8 models, integrate an I/O isolation of 3000VAC, offering input voltage ranges of 72 (43-101 VDC) and 110 (66-160VDC) with outputs of 5V, 12V, 15V, and 24V.
The DC-DC converters, providing an efficiency level of up to 92%, incorporate features like remote on/off control, remote sense, output voltage trim, overload / voltage / temperature protection circuits, and convection cooled ambient temperatures.
MINMAX's industrial standard quarter brick DC-DC converter modules, the MTQZ50 and the MTQZ75 series, comply with the specification requirements of international railway certification “EN50155 (IEC 60571): Railway Application Electronic Equipment Used on Rolling Stock.” The certification covers humidity, cooling, dry heat, and damp heat tests, mechanical requirement tests, Electromagnetic Compatibility (EMC) tests, insulation tests, rugged environmental tests, and I/O voltage isolation tests.
As required by the EN50155 Railway Certification, MINMAX's railway certified MTQZ50 and MTQZ75 DC-DC converters draw power directly from the train’s battery power source, operating in the same range as the storage battery voltage without the requirement of any additional voltage stabilizing device.
Further, the DC-DC converters cover input ranges, voltage spikes, transients, and brown-outs specified by the EN50155 standard for railway electronic equipment system, integrating the capacity to withstand input voltage drops of 0.6VN for 100 ms, and over-voltage surges of 1.4VN for 1s, with insulation to ensure safety.