TDK Lambda Americas Inc
TDK World Wide


July 20, 2007 Editor Contacts:
Mel Berman, Lambda Americas

Lambda Responds to Increasing Demand for Medically Rated Power Supplies

SAN DIEGO, CA (July 20, 2007) - Lambda has extended its popular NV-family of configurable AC-DC power supplies to include a new range of models designed specifically with medical applications in mind. With a reinforced 4kVac input to output isolation, the units meet the rigorous IEC 60601 international safety standards for medical equipment, making them suitable for use in patient-connected medical applications. The NV-175M power supplies include PFC, efficiencies up to 90% and output power ratings of up to 180-watts (200-watts peak).

Four standard models are available for rapid delivery and many custom-configurations can be built-to-order having 1 to 3 outputs with available output voltages of 3.3V, 5V, 12V, 15V and 24Vdc (adjustable to 28V). No minimum loads are required. The operating input voltage range is from 90 to 264Vac, 45Hz to 63Hz. The NV-175M has an optional temperature-controlled fan to ensure optimum cooling while achieving the lowest possible audible noise performance. These compact supplies are approximately 1.3" high x 3" wide x 5" long (without cover or fan).

Despite the more substantial insulation requirements demanded by IEC 60601, 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. Other compliances include RoHS, UL/IEC/CSA/EN60950-1 safety, CE Mark, FCC Class-B, EN55011/EN55022 (radiated and conducted EMI) and EN61000-3-2 harmonics and flicker specifications.

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

The NV-175M series are available now with prices starting at $126.00 each in 100 piece quantities. More information is available at Lambda's website:

Lambda Americas is a unit of TDK Corporation (NYSE: TDK) and has been a leading global provider of power solutions for over 50 years. The company designs and manufactures a wide range of AC-DC and DC-DC power products for Industrial, Medical, Telecom, Datacom, and Test and Measurement applications worldwide. Additional information is available at 800-LAMBDA-4 (toll free) or 619-574-4400.

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