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Wide ratio DC/DC converters are in half- and quarter-brick formats

The 250W IRH-W80 half-brick and the 150W IRQ-W80 quarter-brick high power density modules have efficiency levels above 91% and 16 to 160Vdc input range.

Both modules are designed for embedded applications in the railway and industrial sectors. They comply with EN50155, and have qualification reports for shock, vibration, extreme temperatures and humidity. Typical applications include powering equipment on board trains, for infotainment, communications and lighting, and which operate from a wide range of battery voltages, that require a reliable DC source. The modules also can be used in battery-operated industrial applications which are harsh environments.

The 250W IRH-W80 and 150W IRQ-W80 have a baseplate operating ambient temperature range of -40 to 100°C. There are single 12, 24 and 54V output models with galvanic isolation between the input and output in excess of 4kVdc. The modules have remote enable on/off, a wide output voltage adjustment range of ±10%, remote sense, hold up function, pulse out feature, positive or negative enable and over-current protection adjustment. There is also adjustable under-voltage lockout protection to prevent the deep discharge of batteries. In addition to over-current protection, there is self-protection to external short circuits and over-temperature protection with self-resetting ability.

Murata Power Solutions also provides evaluation boards for the 250W IRH-W80 and 150W IRQ-W80, which are available upon request.  

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