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Wide-input range DC/DC converters tout 91% efficiency

Posted: 16 Jan 2009 ?? ?Print Version ?Bookmark and Share

Keywords:converter DC/DC? input range wide? voltage?

JTF12 and JTM20 series

XP Power has expanded its low power DC/DC converter product line-up with the release of the12W JTF12 and 20W JTM20 series.

Housed in a DIP24 metal package, the JTF12 measures 31.75mm x 20.32mm x 10.4mm, while the JTM20 uses the 25.40mm x 50.80mm industry standard mounting format. These new converters offer a high efficiency of up to 91 percent by using the latest design techniques and components and are suitable for a large variety of applications and products. Additionally, by using popular mechanical formats, these isolated and regulated converters are also suited as low cost drop-replacements for existing designs; saving the need to re-design the PCB layout.

Offering a wide 4:1 input range, both series have 9Vdc to 36Vdc or 18Vdc to 75Vdc inputs that cover the nominal input voltages of 12-, 24- or 48Vdc. Comprising of single and dual output variants, there are a total of 28 models across the two series. Single output models offer 3.3-, 5-, 12- or 15Vdc while dual output voltages are 5-, 12- or 15Vdc. Output voltages are fully regulated to within 0.5 percent over all input ranges and to less than 1 percent across all load conditions. Both devices feature an input to output and input/output to case isolation of 1,600Vdc for up to 1min.

With a maximum case temperature of +105C, the units can operate at full output power from -40C to +60C without derating. No additional heat sinking or forced airflow is required making the converters suitable for most operating environments.

In addition, the highly reliable DC/DC converters comply with MIL-STD-217F for predicted lifetime. The JTF12 has a MTBF in excess of 1 million hours and the JTM20 is rated at 560 thousand hours.

A remote on/off signal is included as standard, allowing engineers to design-in the ability to sequence converter start-up or control the outputs.

The JTM12 single output units are priced at $32 for 500 quantities. The JTM2012 dual output model is priced at $44 for 500 quantities.





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