XMS500A power supplies extend hold up time for medical power supplies
Configurable AC/DC power supplies from TDK-Lambda in the XMS500A have additional features over the earlier XMS500 models. TDK-Lambda has added an ATX power good signal, full power at 85V AC input, extended 20ms hold-up time and compliance with EN 60601-1-2 immunity.
The 500W-rated configurable XMS500A series of AC/DC power supplies is mechanically designed for effective cooling with a low 1m/s airflow, reducing acoustic noise.
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. It is intended for home healthcare, hospital equipment, imaging and clinical diagnostic systems in addition to industrial, test and measurement and communications equipment.
Engineers can select from a range of options to optimise system design and lower cost without requiring the development of a modified standard, explains TDK-Lambda. Choices include 5.0 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 12, 24, 36 and 48V. Additional voltages and options are also offered.
Operating from 85 to 264V AC and withstanding 300V AC surges for five seconds, the series can deliver full power in ambient temperatures up to 50 degrees C with linear derating to 50 per cent load at 70 degrees C. The open frame configuration measures 102 x 180 x 37mm and the U channel 107 x 180 x 39.5mm.
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 also complies with the EN 61000-6-3, IEC 60601-1-2, IEC 61000-4 emissions and immunity standards. Input to output isolation is 4,000V AC (2 x MOPP), input to ground isolation 1,500V AC (1 x MOPP) and output to ground isolation is 1,500V AC (1 x MOPP) for suitability in B, BF and BFD (body, body floating and BF+defibrillator) equipment.
