Compact DC/DC converters suit medical applications

4th November 2016

XP Power

Alice Matthews

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Two 2W rated DC/DC converters for use in medical device applications that require safety isolation between the input and output have been announced by XP Power. The IML02 and ISM02 provide 4,000VAC reinforced isolation with 1 x MOPP at 300VAC (250VAC model IML02) working voltage and, useful for patient connected devices, have a low 2µA patient leakage current.

Featuring 2W of output power and with both single and dual voltage output models, the converters are available in an SMD package (model ISM02) or a through hole, industry standard SIP7 package (model IML02).

The converters’ small size, 19.5x9.8x12.5mm for the SIP-7 packaged IML02, and 24.0x18.0x9.0mm for the ISM02, takes up less PCB space, and in both cases afford the product designer with more room to add extra features, or alternatively reduce the overall size of the end product.

Both converters feature extended operating temperature ranges, -40 to 85°C for IML02 and -25 to 105°C for the ISM02. Offering high efficiency, wide operating temperature and small footprints, the units are well suited to modern compact medical devices.

The IML02 is available in four different input voltage ranges for nominal 5, 12,15 or 24VDC inputs, while the ISM02 is available in three ranges for 5, 12 and 24VDC input applications. The ISM02 offers single output models of 5, 12, 15V, and ±12V and ±15V dual output models, while the IML02 has 3.3, 5, 9, 12, 15V and ± dual versions of each voltage.

The converters meet Class B EMI EN55011 standards (conducted EMI requires a small input filter for the IML range) and carry worldwide medical safety approvals to 60601-1 standards.