Isolated DC/DC converters deliver 88% efficiency

22nd January 2014
Staff Reporter

Designed for applications which require Vin ranges of 9-36V or 18-75V at 15W, the SPM series of low power isolated DC-DC modules are now available from Murata. Available in an industry standard footprint, the modules incorporate the latest PWM technologies, automated assembly processes and synchronous rectification techniques to achieve one of the industry's highest energy efficiency ratings of 88%.



The SPM15 and SPM25 series provides single output voltages of 3.3, 5 or 12VDC, whilst the SPM15 also has a 15VDC output option. The SPM15 is available with two wide input range options of 9 - 36 VDC or 18 - 75 VDC. The SPM25 accommodates an input range around a 48VDC nominal from 36 - 75 VDC. The operating temperature range is from - 40°C to + 85°C makes the modules suitable for use in the demanding environments. Over-current, over-temperature and under-voltage lockout are the protection features available with the devices, whilst the basic insulation provides input to output isolation of 1,600VDC. Additionally, the SPM25 series covers applications that require Vin = 36-75V at 25W.

The 5-sided shielded, encapsulated converters measure 25.4 x 25.4 x 10.41mm and feature a thermally conductive encapsulation material. This material improves the thermal performance in applications where there is little or no airflow, whilst also providing a stable platform for environments where dirt & dust, vibration or extreme temperature variations are likely to occur during normal operation.

The devices are specifically designed for use in electronic equipment that will be subject to harsh environments such as outdoor communications, applications with little or no forced air cooling, smart grid and industrial process control equipment.

"We are excited to offer the SPM series of DC/DC converters to systems design engineers as it provides them a solution for the most demanding, high reliability applications." commented Bill Smith, Director of Marketing, Board Mount Power, for Murata Power Solutions. "


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