Tumbler Technologies + TRUMPower introduces its TMA400 desktop power adapter series. The power supplies have a touch current of less than 100µA at 264VAC, and withstand voltages of 4,000 VAC from input to output (2MOPP), 1,500 VAC from input to ground (1MOPP), and 1,500 VAC from output to ground (1MOPP), allowing them to be used for BF rated applications. The series is certified to both the latest ITE and medical grade safety standards, making them extremely versatile for a multitude of applications. Adding to its versatility, the TMA400 series comes available with five single output voltages of 12V, 19V, 24V, 28V, and 48V.
The power supplies have a profile of 8.74” (L) x 4.41” (W) x 1.77”, are equipped with an IEC 320/C14 AC inlet, and have a standard 10-pin Molex Mini-Fit output connector. The TMA400 series has peak power capabilities of 480W at 115VAC or 520W at 230VAC for 3 seconds. The power adapters have a minimum efficiency of 87.5% at full load, 115VAC/230VAC and 92% at 80% of full load, 230VAC. The power adapters support operating altitudes up to 5,000 meters and operating temperatures between -20°C to +60°C ambient, while derating linearly from 100% load at +40°C to 50% load at +60°C. It has an MTBF of 230,000 hours-minimum at full load, 25°C ambient, calculated per Bellcore TR-332, making it a highly reliable power supply.
EMC and immunity standards
The power supply is certified to the most recent ITE standards of IEC/EN/UL/CSA C22.2 62368-1(3rd Edition). It is also certified to the latest IEC/EN/UL/CSA C22.2 60601-1 (Edition 3.1), ANSI/AAMI ES 60601-1 (Edition 3.1), and IEC/EN 60601-1-2 (4th Edition) medical standards. The power supply complies with EMC and immunity standards including EN 55011, FCC, VCCI class B (conducted and radiated emissions), EN 61000-3-2, EN 61000-3-3, EN 61000-4-2 (ESD at ±15kV air and ±8kV contact), EN61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, EN 61000-4-11.