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LowPower-Slide3

Murata’s low power industrial DC/DC converters can be grouped into 2 categories: unregulated and regulated. Unregulated converters are most appropriate in applications where the input voltage is well regulated. The narrow input voltage range is a nominal ±10%, and the output voltage will vary with output load current and input voltage. For example, for a 5V output DC/DC converter operating from a well regulated source, the output voltage may vary between 4.8V and 5.2V, which is adequate for most active devices. These unregulated units are consequently less complex, smaller, and less costly than fully regulated models. Above about 4W, the unregulated architecture simply becomes less practical; the cost of adding a feedback and control loop shrinks relative to the remaining component costs. Most of Murata’s regulated converters have input operating ranges of 2:1, while some operate over a 4:1 input range. For example, the input voltage of a converter whose nominal input voltage is 24V and has a 2:1 input operating range, can be operated from 18V up to 36V. This makes them appropriate for applications where the input voltage is unregulated, such as battery sources. Furthermore, the output voltage of regulated converters does not vary significantly with output load current and input voltage variation.

PTM Published on: 2011-10-28