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TDK-Lambda News

500W low airflow medical configurable power supply series enhanced with additional features

Posted : 29 Jun 2021

TDK Corporation (TSE 6762) announces the introduction of the 500W rated configurable TDK-Lambda brand XMS500A series of AC-DC power supplies. The series is mechanically designed for effective cooling with a low 1m/s airflow, reducing acoustic noise. Additional features over the preceding XMS500 models include an ATX power good signal, full power at 85Vac input, extended 20ms hold-up time and compliance with EN 60601-1-2 immunity.

The XMS500A is certified to both medical and industrial safety standards and meets EN 55011-B and EN 55032-B radiated and conducted emissions in protection Class I or Class II (no earth ground wire) applications. Target applications include home healthcare, hospital equipment, imaging and clinical diagnostic systems in addition to industrial, test and measurement and communications equipment.

The configurability of the XMS500A allows engineers to select from a wide range of options to optimise system design and lower cost without requiring the development of a modified standard. These options include 5V and 12V standby voltages, a fan supply voltage, case options (including a built-in fan), remote on/off, reduced leakage / touch current, AC fail, and single or dual input fusing. Standard output voltages available are 12V, 24V, 36V and 48V. Additional voltages and options are also offered.

Operating from 85 to 264Vac and withstanding 300Vac surges for five seconds, the series can deliver full power in ambient temperatures up to 50°C with linear derating to 50% load at 70°C. The open frame configuration measures 102x180x37mm and the U channel 107x180x39.5mm.

All models are safety certified to IEC/EN/ES 60601-1, IEC/EN/UL 62368-1, 60950-1, designed to meet IEC 61010-1 and IEC 60035-1 with CE marking for the Low Voltage, EMC and RoHS Directives. The XMS500A is also in compliance with the EN 61000-6-3, IEC 60601-1-2, IEC 61000-4 emissions and immunity standards. Input to output isolation is 4,000Vac (2 x MoPP), input to ground isolation 1,500Vac (1 x MoPP) and output to ground isolation is 1,500Vac (1 x MoPP) for suitability in B, BF and BFD (defibrillator proof) equipment.

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