AC/DC power supply, Lambda, KM Series
AC/DC medical power supply from Lambda
News Release from:
TDK - Lambda UK
27 September 2007
Lambda has introduced the KM Series of medically approved 15 to 40W enclosed PCB mount power supplies with single-, dual- or triple outputs. Eliminating the need for external power adaptors, these small, lightweight power supplies are ideal for use in a wide variety of medical equipment, in particular portable applications such as electronic blood pressure monitors and home infusion therapy equipment.
Available in two package sizes - 64.0mm x 45.5mm x 23.4mm (15W models) and 88.9mm x 63.5mm x 26.9mm (40W models) - the KM Series covers all commonly used output voltages. The single-output models are available from 3.3V to 24V with typical efficiency up to 83%. For the dual-output units, ranges include ±5V, ±12V and ±15V as well as 5V/12V versions. Typical efficiency for these models is up to 83%. The triple-output models cover various outputs, including 5V/±12V with efficiencies to an impressive 80%.
All configurations accept a broad range of input voltages: 90 to 264VAC, 47 to 440Hz or 100 to 375VDC. No ground connection is required as the KM Series is a Class II device. The models are rated for operation in a convection cooled environment from -25°C to 70°C, derating linearly to 50% load from 50°C to 70°C. Other features include over current and over voltage, as well as over temperature protection.
Lambda’s KM Series power supplies have 4kVAC input to output isolation, and meet EN60601-1-2 immunity and Class B (15W) and Class A (40W) EMI standards. Leakage current at 230VAC is less than 200µA. They are also safety approved to IEC/UL60601-1 specifications and are CE marked. Depending on model, Lambda gives the KM Series an MTBF of between 200,000 and 400,000 hours. All models carry a two-year warranty.