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Power Electronics Europe News
 
I7C series buck-boost DC/DC converters save space

Intended for medical, communications, industrial, test and measurement, broadcast and portable battery powered equipment, the 8A 300W rated, non-isolated DC/DC converters are packaged with the industry standard 1/16th pinout. The step-up and step-down converters’ output voltage can be adjusted from 9.6 to 48V and accept a wide range input voltage of 9.0 to 53V. The converters seamlessly transition from buck to boost mode operation without disruption in performance, adds the company.

The DC/DC converters can be used to derive additional high-power outputs from a 12, 24, 36 or 48V DC power supply, at a much lower cost than isolated DC/DC converters. The product’s design reduces the need for large external components, saving cost and board space, added the company.

Efficiency is up to 97%. During light load conditions, the control circuitry significantly reduces power consumption. At zero load, the input current draw is typically just 5mA, which can be reduced to around 0.25mA when the remote on-off is used to put the converter into standby, thereby extending the time battery powered equipment can remain functional, during non-peak periods.

Three mechanical configurations are available, measuring 36.8 x 34mm x 12.2mm. A baseplate version for conduction cooling to a cold plate is 13mm high, or models with an integral heatsink for convection or forced air cooling are 24.9mm high.

The thermal design is claimed to allow for minimal output de-rating, even with low airflow conditions.


Standard features include a trim pin for output voltage adjustment, remote sense, remote on-off (positive or negative logic), input under-voltage, over-current and over-temperature protection. The company also offers models equipped with a power good signal, output current monitoring and to minimise system noise, the switching frequency can be synchronised to another model or to an external clock.

All models have safety certification to the IEC/EN 62368-1 and 60950-1 standards, with CE marking to the Low Voltage and RoHS Directives.



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