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DC/DC converter eliminates need for cooling

Posted: 09 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:LSM2? LSN2? DC/DC converter? C&D technologies?

C&D Technologies introduced a series of non-isolated point-of-load DC/DC converters that promises to eliminate the need for additional components such as heatsinks and external filter circuits in most applications.

The new LSM2 (surface mount) and LSN2 (through-hole) modules power CPUs, programmable logic and mixed-voltage systems with minimum noise and heat. C&D claims that their products eliminate the need for cooling.

Converters in the series offer input voltage range options of 2.5V to 5.5V and 9V to 14V, and are designed for use in distributed power and intermediate bus architectures. The range comprises a total of six modules (output current options of 6-, 10- and 16A for each input voltage) and can deliver up to 52W of output power (LSN2-T/16-D12). The rated output power is available at up to 70C ambient with 200LFM airflow. All devices feature user-selectable outputs of 0.75V to 5V. Voltage selection is made with either an external programming resistor or by a DC voltage applied to the trim pin. The products have efficiency levels of up to 95.5 percent.

The entire family of converters is compliant to the Distributed-power Open Standards Alliance specification. The products are also designed for compliance with the RoHS-6 standards, and are capable of withstanding high temperature attachment processes required for assembly in an RoHS-6 application.

Standard features include a "Power Good" output, remote on/off control with either positive or negative logic, a selectable start-up configuration for sequencing or tracking multiple voltages, and an output sense pin for compensating IR drops. On-board self-protection functionality includes output short circuit protection 'hiccup' shutdown, OVP and OCP, and over-temperature shutdown.

Pricing for 1,000-piece quantities (16A) is approximately $13 each.

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