1/16th brick footprint DC-DC buck converter series expanded

TDK Corporation has expanded the TDK-Lambda i7A series of non-isolated buck DC-DC converters with the industry-standard 1/16th brick pinout. The 60A output models offer a 400W maximum rating, offering 0.8-8V adjustable outputs from a 12V nominal input. Also, an option to modify the over-current limit is now available on all input voltage and output current models. Not only does this feature help lessen stress on the converter when exposed to excessive overload conditions but aids over-current limit fine-tuning based on actual system needs.

The models can be employed to derive extra high-power outputs from a 9VDC to 18VDC power supply at a lower cost and higher efficiency than isolated DC-DC converters. These compact products are ideal for mobile robotics, drones, medical, industrial, test, measurement, communications, computing, and portable battery-powered equipment.

Efficiencies of up to 97% dramatically reduce internal losses and enable the device to operate in ambient temperatures of -40C to +125C, even with low airflow conditions. The device's design supplies low output ripple and outstanding response to dynamic loads. Unlike discrete solutions, minimal external components are needed, saving cost and PCB space.

Like the 33A and 45A versions, the 60A supplies a selection of three mechanical configurations, measuring only 34mm wide and 36.8mm long. The 11.5mm high open-frame model is ideal for applications needing a low profile. The baseplate version can be conduction cooled to a cold plate and is 12.7mm high. Models with an integral heatsink for convection or forced air cooling are 24.9mm high.

The device's standard features include output voltage adjustment, + remote sense, negative logic remote on-off, input under-voltage, over-current and over-temperature protection. Evaluation boards are available for simplified qualification.

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