Tuesday, June 16, 2009

XP Offers JHM Low-Power Isolated DC/DC Converters

XP Power's JHM ultra-compact low-power isolated DC/DC converters are available in 3 and 6W board-mounted variants and packaged in an industry-standard 24-pin DIP package. They conform to the international medical-equipment safety standards UL / IEC 60601-1 and CSA-C22.2 No 601.1. The units provide 3,000V AC input to output isolation for up to one-minute - meeting the secondary-isolation requirements for BF and CF applications - and 5,000V AC isolation of up to 10 milliseconds for defibrillation proof compliance.

Any medical appliance that may involve patient-contact needs to provide isolation from hazardous voltages and have an extremely low leakage current. The JHM series features a small leakage-current of 2uA and low 20pF input to output capacitance. It provides a reliable and cost-effective solution for designers of medical equipment. The JHM series comprises of 20 models.

The 3 and 6W units are available in +12V DC or +24V DC nominal input versions covering the ranges of +10 to +17V DC or +20 to +30V DC. Single-output models are available with +5, +12 or +15V DC outputs. Dual-output models offer +/-12 or +/-15V DC options. Output voltages are regulated to within +/-0.3 per cent over all input conditions and less than +/-2.0 per cent over all load conditions.

The converters can operate in most environments without any additional heat sinking or forced airflow. Full load-output is available from -20C to +60C and up to the maximum case temperature of +100C with de-rating. The units conform to EN55011 and EN55022 level A standards for conducted and radiated EMI without the need for additional external components. Units are available for immediate delivery from Farnell or direct from XP Power.

No comments: