medical power supplies

Lambda responds to increasing demand for medically rated power supplies

News Release from: Lambda UK
03/07/2007

Lambda UK has extended its popular NV-Power family of configurable AC-DC power supplies to include a new range of models designed specifically with medical applications in mind. With 4kVac, reinforced input to output isolation, the units meet the rigorous IEC60601 international safety standard for medical equipment, making them suitable for use in medical devices including patient connected applications.

Four highly efficient 180W (200W peak power) units are available on rapid delivery, although additional variants can be built to order. Operating inputs range from 90V to 264V at 45Hz to 63Hz, with up to three outputs offered, covering the 3.3V to 24V range. The NVPower NV-175M range includes multi-output versions with an optional temperature-controlled fan to ensure optimum cooling whilst achieving the lowest possible audible noise performance.

Despite the more substantial insulation requirements demanded by IEC60601, these extremely compact units are capable of fitting 1U enclosures. Worst-case leakage current is impressive at less than 300µA at 264Vac/63Hz making it suitable for worldwide markets.

Lambda’s NV-Power supply family employs patented Multi-Resonant Topology (MRT) to reduce switching losses and heat generation. The medically approved versions achieve a high power density of 9.3W/in3, whilst the MRT circuitry’s soft switching characteristics play a role in ensuring that Class B EMC compliance is met.