15W DC-DC converters encapsulated for harsh environment duty

January 23, 2014 // By Graham Prophet
Murata’s SPM series of low power isolated DC-DC modules is designed for use in harsh environments such as outdoor communications, applications with little or no forced air cooling, smart grid and industrial process control equipment.

The SPM15 series is designed for applications that require Vin ranges of 9-36V or 18-75V at 15W. The SPM25 series covers applications that require Vin = 36-75V at 25W. They are 5-side-shielded, encapsulated converters, measuring 25.4 x 25.4 x 10.41 mm that offer an industry standard footprint, and incorporate the latest PWM technologies, and synchronous rectification techniques to achieve efficiency of 88%. A thermally conductive encapsulation material improves the thermal performance in applications where there is little or no airflow, and provides a stable platform for environments where dirt and dust, vibration or extreme temperature variations are likely to occur during normal operation.

The SPM15 & SPM25 series provides single output voltages of 3.3, 5 or 12 VDC. In addition, the SPM15 has a 15 VDC 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 48 VDC nominal from 36 - 75 VDC. The operating temperature range is from - 40C to + 85C. Protection features include over-current, over-temperature and under-voltage lockout. Basic insulation provides input to output isolation of 1,600 VDC.

Murata Europe; www.murata.eu