Ruggedized power blocks for difficult environments

Powersolve now offers the TEQ 300WIR family of ruggedized DC-DC converters from Traco, designed to offer the highest performance in harsh environments. The power blocks are approved to safety standards IEC/UL 60950-1 and UL 508 as well as meeting the requirements of EN 50155 and EN 61373 which makes them suitable for railway applications. The units feature extra wide input voltage ranges of 18VDC to 75VDC and 43VDC to 160VDC. Interestingly, the nominal input voltages of 48, 72, 96 and 110VDC can be applied while a ±40% deviation of nominal input voltage does not affect the function. This means that the power blocks can cope with brownouts (0.6 x Vnom x 100ms) and transient voltages (1.4 x Vnom x 1s) as defined by EN50155 - not only for a limited duration, but permanently. They are offered with output voltages of 12, 15, 24, 28 and 48VDC which are adjustable by ±20%.