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DC/DC converters boast up to 94% efficiency

Posted: 19 Aug 2009     Print Version  Bookmark and Share

Keywords:SIP module  DC/DC  converter 

Power SIP modules

Bel Power, a division of Bel Fuse Inc., has unveiled a series of Power SIP modules that expand the company's offering of non-isolated DC/DC converters.

The 20-, 40-, 50-, 60- and 80A modules operate at efficiencies of up to 94 per cent over the input range of 4.5V to 13.8V, and output voltage trim range of 0.59Vdc to 5.1Vdc. The fixed-frequency devices are provided with active-high and true active-high enable logic, and feature an integrated heat sink to maximise usable power density. Parts are RoHS EU Directive 2002/95/EC-compliant.

The converters are most commonly specified for an extensive range of PCB-mounted power apps in which a particularly small footprint is required. They are suited for 12V input or 5V input distributed power architecture systems and are widely employed in data and enterprise networks. Devices are moreover appropriate in telecommunication equipment, servers, storage and datacom equipment.

The Power SIP modules all switch at a fixed frequency from 250KHz to 500KHz, depending on the module. They boast a low input ripple current, remote on/off pin, and differential remote sense. Additional control and protection features include input under-voltage lockout and output over current/short circuit protection. The 60- and 80A modules are notably provided with a current share pin that allows paralleled units to share current, while the 40- and 50A parts are offered in both vertical and horizontal configurations.

Pricing for the Power SIP series of non-isolated DC/DC converters, in quantities of 10,000, is at $9.85, $17.85, $18.75, $24.95 and $25.95 for the 20-, 40-, 50-, 60- and 80A models, respectively. Samples and production quantities are available from stock with lead times of up to 12 weeks.

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