Power Electronics
DC-DC Converters Suit Harsh Environs

DC-DC Converters Suit Harsh Environs

The SPM series of low power isolated DC-to-DC modules from Murata are designed specifically 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. The SPM15 series is designed for applications that require Vin ranges of 9–36 V or 18-75 V @ 15 W. The SPM25 series covers applications that require Vin = 36-75V @ 25 W.

These compact, 5-sided shielded, encapsulated converters, measuring 25.4 x 25.4 x 10.41 mm offer an industry standard footprint, 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%. A thermally conductive encapsulation material greatly improves the thermal performance in applications where there is little or no airflow, provides a stable platform for environments where dirt & 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 - 40 °C to + 85 °C, designed for use in the most demanding environments.

Protection features include over-current, over-temperature and under-voltage lockout. Basic insulation provides input to output isolation of 1,600 VDC. The SPM15 and SPM25 series of encapsulated isolated DC-DC modules are ideal for use in high-reliability industrial process control, smart grid and transportation infrastructure equipment. 

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