TRUMPower introduces new EPS1U Power Supplies for medical applications

3rd October 2012
ES Admin
Tumbler Technologies + TRUMPower offers its TMPC 1U series of 250W-350W AC/DC medical grade PC power supplies with 1.59” low profile, which makes the PC power supply suitable for 1U and other medical applications where height is limited. The series is approved to the latest medical and ITE safety standards. The lineup comprises of the 250W, 300W, and 350W models.
The units are approved to the 3rd edition of EN 60601-1, UL 60601-1, and IEC 60601-1 medical standards, which includes risk management and are also approved to EN/UL/IEC 60950-1 2nd edition standards. The agency approvals include EN 60601-1:2006, IEC 60601-1:2005 and IEC 60950-1:2005 by VDE, ANSI/AAMI ES 60601-1: 2005 and CAN/CSA-C22.2 No. 60601-1:08 by UL. The power supplies have DC output voltages and maximum loads of +3.3V/16.0A, +5V/18.0A, +12V1/16.0A, +12V2/16.0A, -12V/0.5A, -5V/0.2A, +5Vsb/2.5A. Maximum loads for +3.3V/+5V/+12V1/+12V2 are 231W, 281W, and 331W for the 250W, 300W, and 350W models, respectively. The series is 80 PLUS Bronze certified, with an active efficiency of 80% minimum at full load.

Measured at 7.48” x 3.94” x 1.59”, the power supplies come with an on/off switch, a thermally controlled low noise ball-bearing fan, and are furnished with a standard output cableset, which includes the 20+4 pins ATX motherboard connector, 4-pin or 8-pin +12V CPU connectors, SATA drive connectors, etc. that can meet the requirements of most PC-related applications. Alternatively, custom cablesets can be ordered as requested by the customer.

With a 90-264 VAC universal input and active PFC, all models comply with EN61000-3-2 standards. The units meet ATX12V & EPS1U 2.0 standards and are CE marked, RoHS compliant. In addition, the power supplies meet EN60601-1-2 EMC standards, including EN55011/FCC/VCCI class B (conducted and radiated emissions), EN61000-3-2, EN61000-4-2, EN61000-4-3, EN61000-4-5, EN61000-4-11. Before delivery, the power supplies have passed 100% Burn-in test @ 50°C and 100% Hi-Pot test. Depending on the model, the calculated MTBF at full load ranges between 135K hours and 198K hours at 25°C ambient, per MIL-HDBK-217F. The earth leakage current at 264 VAC is 160µA typically.

The units feature dual input line fuses, 2 x MOPP (means of patient protection), output overvoltage, overload and short circuit protections. Overload protection is 150% maximum of the rated output. Hold up time is 17 milliseconds minimum at full load, nominal input voltage and power fail signal delay time is 1 millisecond minimum. The power supplies operate between 0°C to +50°C and can be stored at -20°C to +80°C.

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