New compact power supply series for demanding medical applications

COSEL Co, Ltd has expanded its medical power line with the new UMA series, the first two models being the 30W UMA30F and the 60W UMA60F. The models feature a universal input range of 85VAC to 264VAC and comply with international safety standards. Developed for demanding medical applications, the UMA series is ideal for BF applications and complies with 2MOPP (IN/OUT) and 1MOPP (OUT/FG) safety needs. Based on a robust platform, the units’ design has been optimised to offer an excellent price/performance ratio for medical applications requiring a high-quality power solution. The series has up to five output voltages of 5, 12, 15, 24, and 48VDC. The series can be operated within a universal Input range of 85VAAC to 264VAC and has a typical efficiency of up to 91% at high line.

Four single output voltages are currently standard for the UMA30F: 5V/3A, 12V/2.5A, 24V/1.3A and 48V/0.65A, and five for the UMA60F: 5V/6A, 12V/4.5A, 15V/3.5A, 24V/2.5A and 48V/1.25A. Output is factory adjusted to a fixed value, but an option ‘Y’ with potentiometer is offered in applications where output voltage adjustment is needed.

The series includes inrush current limiting circuitry, overcurrent, and overvoltage protection. Providing versatility and robustness, the power supplies can be operated in an environmental temperature range of -20C to +70C. A derating can apply depending on the final equipment assembly style and cooling conditions.

With its medical focus, the series’ input to output isolation complies with 2MOPP, its input to Frame Ground complies with 1MOPP, and output to FG with 1MOPP. The units are approved in accordance with ANSI/AAMI ES60601-1 and EN60601-1 3rd Edition. In the case of BF applications where patient leakage current must be less than 100 µA, with its 75 µA figure, the UMA series is well below that limit and so eminently suitable for such applications.

The UMA series meets the following agency approvals: ANSI/AAMI ES60601-1, EN60601-1 3rd, C-UL (equivalent to CAN/CSA-C22.2 No.60601-1), UL62368-1, EN62368-1, C-UL (equivalent to CAN/CSA-C22.2 No.62368-1) and complies with EN60335-1.

To accommodate application-specific requirements, three options are available, including adjustable output voltage (Y), terminal block (T), and for applications requiring additional safety, the UMA30F and UMA60F are available with reinforced isolation in conformance with the IEC class II (E).

The UMA30F measures 50.8mm x 21.7mm x 76.2mm [2″ x 0.85″ x 3″] (W x H x D) and weighs 80g max. The UMA60F is just 2.5mm taller (24.2mm) and weighs 120g max.

The series has an excellent five-year warranty and conforms to the European RoHS and Low Voltage Directives.

The combination of small size, excellent cost/performance ratio, and high quality makes the series a superb power solution for demanding applications not only in the medical market but also for test and measurement and industrial applications, including household and similar electrical appliances.