18-135V input range with 'up to 90% efficiency'

According to SynQor, this doubles the existing ultra-wide 4:1 input ratio standard. With one converter designers can simultaneously satisfy EN50155 requirements for 36, 48 and 72V railway systems. The IQ64 family uses SynQor's two stage topology with a constant mid bus voltage, which enables an optimised isolation stage design based on synchronous rectifiers. SynQor claims that this can reduce heat loss and achieve up to 90% efficiency at full load. The IQ64 series further expands the InQor family of encased and ruggedised isolated dc/dc converters for industrial and transportation applications The half brick format is comprised of nine output voltages, including 1.8, 3.3, 5, 12, 15, 24, 28, 40 and 48V. For each output voltage there are two converters: one with a power ranting in the 200W range and a second unit in the 150W range for lower power requirements. The range of output voltages and power levels has been designed to make the series suitable for a variety of 24, 36, 48 and 72V systems, such as industrial automation, locomotive and railway electronics. The IQ64 series also addresses many of the UK RIA12 and French NFF 01-510 railway standards. The use of fixed switching frequency technology provides EMI performance said to simplify filtering design. The IQ64 series of dc/dc converters offers on/off control referenced to input side, remote sense for the output voltage and an output voltage trim range of -20, +10%. Protection features include input under voltage lockout, input over voltage shutdown, output current limit and short circuit protection, active back bias limit, output over voltage protection and thermal shutdown. All models have at least 2250Vdc isolation rating between input and output, have calculated MTBF values in excess of 2MHrs, and are fully 6/6 RoHS compliant.