Single board, open-frame converters feature 95% efficiency

Single board, open-frame converters feature 95% efficiency

The iQL and iQG Series of wide input range, fully regulated and isolated dc-dc converters are available with nominal output voltages from 2.5 to 12 V and power ratings to 300 watts, delivering high performance in the industry standard DOSA quarter brick footprint. The series was designed with confined space and demanding thermal environments in mind as required in telecom, datacom, wireless, and other applications including test and measurement, broadcast, robotics, and industrial controls. These single board open-frame converters offer up to 95% efficiency, 181 W per cubic inch power density, and up to 60 A of useable output current. Metal baseplates are provided on most models to facilitate conduction cooling when needed.

By integrating the company’s latest custom ASIC control devices, newest ferrite cores, and multi-layer capacitors, engineers have reduced the component count significantly, providing in a single-board solution with a low height of only 0.52-in. and the same output power formerly only available on two-board designs.

The fully regulated iQL Series are suitable for powering distributed, intermediate, and Advanced Telecom Computing Architecture (ATCA) bus applications. For conventional power rails, the standard output voltages of 2.5, 3.3, and 5 V are equipped with both remote sense and output trim (-20/+10%), suitable for powering a wide array of devices. The 8.3 and 12 V output models feature output trim (+20/-10%) without remote sense. This family also boasts wide input voltage ranges of either 18 to 36 or 36 to 75 V. Output power ratings range from 150 to 300 W depending on output voltage.

The iQG Series is available with a nominal 12 V at 25 A output, providing up to 300 watts of continuous output power. They can operate from a wide range input of 36-75 Vdc and are suitable for distributed and intermediate bus applications that have limited airflow available for cooling. The iQL/iQG is fully isolated from the input to output and input to baseplate (1,500 Vdc). Standard features include fixed frequency operation, remote on/off, monotonic and pre-bias load start up, auto-recovery from input under-voltage, plus over-current, over-voltage, and over-temperature protection circuitry. For more information, visit TDK-Lambda.

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