100 W Power Supplies

By TDK-Lambda Americas, Inc. 377

100 W Power Supplies

TDK Corporation's TDK-Lambda brand CUS100ME series of AC-DC 100 W rated power supplies have the capability of delivering 50 W in ambient temperatures of +80°C when conduction cooled without the need for forced air cooling. Certified to medical and ITE standards for Class I and II (no earth ground connection) operation, the series meets both class B radiated and conducted emissions. CUS100ME target applications include medical, home healthcare, dental, test and measurement, broadcast, and industrial equipment.

Available with 12 V, 15 V, 18 V, 24 V, 28 V, 36 V, and 48 V outputs, the CUS100ME operates from an 85 VAC to 264 VAC input and has operating efficiencies up to 94%. Off-load power consumption is less than 0.5 W, and the product warranty is five years.

The open frame version is in the industry standard 50.8 mm x 101.6 mm (2” x 4”) footprint with a height of 31.5 mm. Convection cooled, it can deliver 100 W at +50°C and 60 W at +70°C, or with forced air cooling 100 W at +70°C and 75 W at +85°C. With a U-channel construction, measuring 64 mm x 116 mm x 38.5 mm (W x L x H), the CUS100ME can be conduction cooled via a cold plate to deliver 100 W at +70°C and 50 W at +80°C. Cover or top fan options are also available.

Input to output isolation is 4 kVAC (2 x MoPP), input to ground 1.5 kVAC (1 x MoPP) and output to ground 1.5 kVAC (1 x MoPP) making the series suitable for B and BF rated medical equipment. Touch current is a maximum of 100 µA, with leakage current less than 250 µA. Maximum operating, transportation, and storage altitude is 5,000 m.

All the power supplies are certified to IEC/EN/ES/CSA 60601-1, IEC/EN/UL/CSA 62368-1, and IEC/EN/UL/CSA 60950-1 with CE marking for the low-voltage, EMC, and RoHS directives. The CUS100ME is designed to meet IEC61010-1 and EN 60355-1 compliant versions are also available. Both Class I and Class II versions are compliant to EN 55011-B and EN 55032-B (radiated and conducted) and meet the EN 61000-3-2 harmonics, IEC 60601-1-2 Edition 4, and IEC 61000-4 immunity standards.

Features
  • Up to 94% efficiency
  • Operation up to +85°C ambient temperature
  • Industry standard 2" x 4" footprint (open frame)
  • Class I and II operation with class B EMI
  • Suitable for B and BF rated equipment
  • Multiple case options

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