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Wide input DC/DC converters serve industry and rail

Designed for the industrial and railway sectors, the PKE-A series of DC/DC power modules have been announced by Flex Power Modules.

They are provided in sealed and encapsulated packaging, to ensure they will work reliably when subjected to dust, moisture, severe vibration and other harsh conditions.

For Industrial applications, the PKE8000A series provides rugged DC/DC solutions in the industry standard 2.0 x 1.0 inch (50 x 25mm) form factor, running from 12, 24 or 48V supply voltages with a wide input range of nine to 75V. Delivering up to 40W of output power at up to 91 per cent efficiency, the series also offers mean time between failures (MTBF) of up to four million hours, and input to output isolation of 2250V DC. The devices meet the latest IEC/EN/UL62368-1 safety standards.

For railways applications, the PKE7000A series is packaged in the same industry standard form factor, but operates from a 43 to 160V input, delivering up to 30W. This makes it suitable for the majority of on-board requirements running from 72V and/or 110V nominal supplies, most commonly found in the rail industry. The devices comply with the EN50155 railway standard and offer MTBF figures of up to five million hours to satisfy the most demanding applications.

Both the PKE8000A and PKE7000A families are available now for sampling and volume production requirements.

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Claimed to be the first LVAC power capacitors with a lever-operated spring terminal connection, the ESTAspring, the ESTA PhMKP series is available from Vishay Intertechnology.

The company claims that they reduce assembly time by 60 per cent and increase connection reliability in high vibration applications.

Most tubular power capacitors feature an IP20 terminal block with a screw connection, but the ESTAspring connection is screwless. This enables a faster and easier connection, and the continuous contact force ensures the highest level of contact reliability over the devices’ entire lifetime, says Vishay.

Without the need to tighten screws, the metallised polypropylene film capacitors provide a completely maintenance-free connection for low voltage power correction and harmonic filters in wind power plants, solar panels and inverters, and thermal power stations. A simple optical check ensures the connection is successful.

The PhMKP series offers voltages from 230 to 1000V, the output from two to 37.1kvar, and maximum terminal current of 90A. The capacitors are corrosion-proof, the spring is stainless-steel spring, and available in oil-filled and dry gas-filled versions. The devices are RoHS-compliant, halogen-free, UL- and cUL-approved.

Samples of the PhMKP series are available now. Production quantities are available with lead times of 10 weeks.

http://www.vishay.com