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DC/DC converters offer full power operation

Posted: 09 Nov 2011     Print Version  Bookmark and Share

Keywords:DC/DC converter  transportation application  DC power 

Luso Electronics Distribution reveals the SynQor RailQor series of DC/DC converters that are designed to offer isolated DC power for applications such as LED displays, audio amplifiers, safety monitors, lighting and communications systems that meet the EN50155 European Standard.

The converters offer full power operation without a heat sink at 85°C under no-airflow conditions. According to the company, the devices are geared for demanding thermal environments of transportation applications.

These fixed-switching frequency converters use SynQor's synchronous rectifier based technology to achieve extremely high efficiency, noted Luso Electronics.

SynQor RailQor

SynQor RailQor series offers full power operation without a heat sink at 85°C.

The series' power dissipation has been reduced at very light loads, resulting in efficiencies exceeding 85 per cent at as little as 10W output and 93 per cent at full load. Minimal power dissipation allows the series to deliver up to 50W with no derating. The full operating temperature range is from –40°C to 110°C baseplate temperature with airflow, or up to 125°C in natural convection environments.

Nominal input voltages include 24V (9-36V), 68V (12-160V), 72V (42-110V) and 110V (66-160V) with output voltage offerings of 5V, 12V and 24V. Each module is completely encased to provide protection from harsh environments, and is available with an optional flanged style baseplate.

Features include remote on/off control, 10 per cent to -20 per cent output voltage trim range, remote output voltage sense, input under-voltage lockout, output over-voltage protection, active back bias limiting, thermal shutdown, output current limit and short circuit protection. The series is designed for up to 3000VDC and 100MΩ input-to-output isolation, is RoHS 6/6 compliant and is rated with MTBF values in excess of 10 lakh hours at 70°C (MIL-217).

The RailQor series of products are now available from Luso Electronics in quarter-brick packages for evaluation and qualification. Production quantities are available with 8-10 weeks lead-time depending on volumes.

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