Power supplies offer 4kVAC input to output isolation

29th October 2014

TDK-Lambda

Siobhan O'Gorman

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Datasheet

Featuring input to output isolation of 4kVAC and 2xMOPP, the ZMS100 single-output power supply series has been released by TDK-Lambda. The devices, which are the first in the company’s ZM series of sub-300W power supplies, provide 1.5kVAC 1xMOPP input to ground and output to ground isolation levels.

Conforming to the IEC60601-1 3rd edition medical standard, the power supplies have a compact 2x4” footprint and less than 100µA touch current, making them suitable for both Class I and Class II (or double insulated) applications for hospital, clinical, dental and home based medical environments.

Ensuring good airflow around the components, ripple current in output capacitors has been minimised. Rather than the commonly used electrolytic, a longer life ceramic type is used for the start-up capacitor.

Meeting ErP guidelines with less than 0.5W no load power consumption and an average active efficiency of greater than 87%, the ZMS100 power supplies cover all commonly used output voltages from 12 to 48V with 90% typical efficiency. The power supplies are user adjustable by -5 or +10%, accommodating non-standard system voltages. Under convection cooling the devices can deliver up to 80W at 50°C and in forced air (only requiring a low airflow of 0.37m/s at 230VAC input) 100W at 50°C.

Alongside medical applications, the ZMS100 power supplies are also suitable for broadcast and professional audio applications, test and measurement equipment and LED displays and signage.

Conducted EMI requirements of EN55011-B and FCC Class B (without additional filtering or components) and EN60601-1-2 immunity specifications for greater reliability are met by the devices. The ZMS100 power supplies, which are offered with a three year warranty, carry the CE mark, according to the LV and RoHS2 Directives.

Martin Southam, Director of Marketing, TDK-Lambda EMEA said: “Many of our key OEM customers have been asking us to introduce low power products that meet their demanding requirements in terms of cost, size, efficiency and lifetime.”

“Uniquely, the ZMS100 has been designed and developed in the UK aimed at the European and North America markets,” added Southam. “Our heavy investment in R&D enables us to offer our customers an unparalleled level of localised technical support, which is allied to our wealth of application expertise gained in the target market segments.”