Output modules for medical applications Power


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ox Power announces two new 300W output modules that will extend the range of medical applications for the company’s NEVO+600 and NEVO+1200 series of modular power supplies. Vox Power’s NEVO+ power supplies offer


system designers a flexible power solution where size, weight and power density are key considerations. Until now, the NEVO+600 units used as many as four isolated, configurable power modules to achieve up to 600W while the larger 1200W model used up to eight. With the launch of the new OPA2 and OPA3 output modules, that number is reduced to two and four respectively allowing users to minimise cable and link requirements and part count which means simplified construction, increased reliability and, for most applications, a reduction in overall system costs.


Smallest in class


The NEVO+ range of compact, modular, configurable power supplies consists of two models. The NEVO+600 provides 600W of output power while the NEVO+1200 offers up to 1200W,


both from a footprint described by Vox Power as “smallest in class”. The larger unit measures just 152.4 x 152.4 x 40.8mm (6 x 6 x 1.61in) resulting in a power density figure of 21W/in³. Importantly for some applications, the NEVO+1200 weighs in at just 1.2kg.


Key features of the NEVO+1200 include 90% efficiency, a standby power of less than 3W, accurate current sharing and


the ability to connect modules in parallel and series. As well as remote current and voltage programming, NEVO+ units can be configured in the field. There is also a low-noise fan option. Medical approvals for NEVO+ power supplies include EN/IEC/ ANSI 60601-1 for safety and EMC EN60601-1-2 4th edition for EMC immunity. Applications include diagnostic systems, medical robotics, dialysis / peristaltic pumps, laboratory and analysis equipment, incubators and many others where high- power levels are needed in a small space.


Dual slot output modules


Vox Power’s 300W dual slot OPA2 and OPA3 modules provide manually adjustable output voltages of 4.5 to 15V at 25A and 9 to 30V at 15A respectively. Like the NEVO+ units, the modules are approved to EN/IEC/ANSI 60601-1 and EMC EN60601-1-2 4th edition. These are very high reliability output modules (1 FPMH at 40ºC at 80% load) and both modules offer excellent load, line and cross regulation as well as protection against over- current, voltage, temperature and short circuit. Vox Power has included a 5V, 10mA bias supply.


vox-power.com EMC protection for medical power devices O


ne of the key safety concerns with respect to medical devices is, that the patient is often electrically connected to the medical device. Since a medical device must be absolutely safe for both, the patient and the operator, all electronics including components must meet strict requirements according to IEC/EN 60601-1.


As an example: AC/DC power supplies and DC/DC converters for medical and healthcare applications need to accomplish much stricter requirements compared to power supplies for the industrial market. Some of them main technical differences are additional requirements on the isolation system (2xMOPP), the leakage current, the isolation capacitance and EMC limits. Traco Power offers both AC/DC and DC/DC solutions for medical applications, all of which fulfil the 2xMOPP requirement. Compliant with the EMC. requirements of the 4th edition of IEC/EN 60601-1, they are suitable for all patient


connected, body floating rated applied parts medical devices. The AC/DC products range from small 5W PCB-mounting modules, a range of mid-power open frame designs, and


enclosed power supplies offering power levels of up to 850W. Traco Power’s DC/DC converter range comprises PCB- mounting modules with power levels from 1W to 60W.


Features • IEC/EN/ES 60601-1 3 rd Edition for 2 x MOPP


• Risk Management ISO 14971 • IPC-A-610 Class 3 High Performance Acceptability


• EMC Emission compliant according to IEC 60601-1-2 ed. 4


• Quality Management ISO 13485 • 5-years warranty


tracopower.com/medical-campaign


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› Custom pin lengths and header heights for precise board spacing › Selective pin loading and factory-fitted keying plugs for polarisation › Bespoke connectors for where standard products aren’t up to spec


+44 (0)1256 472000 sales@gtk.co.uk www.gtk.co.uk www.cieonline.co.uk Components in Electronics April 2021 13


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