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i7A – 500 W DC-DC buck converters
DC-DC, Power Supplies

i7A – 500 W DC-DC buck converters

TDK-Lambda announces the introduction of the i7A series of 33 A 500 W rated non-isolated DC-DC converters, packaged with the industry-standard 1/16th brick pinout. The output voltage of these step-down converters can be adjusted from 3.3 to 24 V and accept a wide range input voltage of 18 to 60 V.

The i7A 33 A series can be used to derive additional high-power outputs from a 24 V, 36 V or 48 V DC power supply, at a much lower cost than isolated DC-DC converters. These compact products are suited for use in medical, communications, industrial, test and measurement, broadcast and portable battery-powered equipment.

Efficiencies of up to 98% minimise internal losses and allow the i7A to operate in ambient temperatures of -40°C to +125°C, even with low airflow conditions. The i7A’s design provides low output ripple and excellent response to dynamic loads. Very few external components are required, compared to discrete solutions, saving cost and printed circuit board space.

A choice of three mechanical configurations is available, measuring just 34 mm wide and 36.8 mm in length. The 11.5 mm high open-frame model is suitable for applications requiring a very low profile. The baseplate version for conduction cooling to a cold plate is 12.7 mm high. Models with an integral heatsink, which are for convection or forced air cooling, are 24.9 mm high.

Standard features for the i7A series include an output voltage adjustment trim pin, + remote sense, remote on-off (positive or negative logic), input under-voltage, over-current and over-temperature protection.

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

For more information please contact Accutronics or visit the TDK-Lambda website.