TDK-Lambda has expanded its i6A family of non-isolated DC/DC converters with the introduction of the 20A i6A4W step-down units that operate from an input range of 9V to 53V. The output voltage of the 250W converters is adjustable from 3.3V to 15V, detailed the company.

TDK DC/DC converter

The i6A4W series is offered in a 1/16th brick form factor with dimensions of 33mm x 22.9mm x 12.7mm. They allow operation from 48V inputs and serve as drop-in replacements for expensive isolated 1/16th converters driving 12V POL devices in medical, communication, industrial, and test and measurement equipment.

In addition, the i6A4W converters can be used in conjunction with single-output 12V, 24V, 36V and 48V output AC/DC supplies to generate additional regulated high-current outputs with or without battery backup. Units boast efficiencies of up to 97%, minimising power losses and enabling operation in harsh ambient temperatures of -40°C to 125°C, even with low airflow.

Basic features include an output voltage adjustment pin, positive or negative logic, remote on/off and remote sense, as well as input undervoltage, overcurrent and thermal protection. Output voltage sequencing and operating-frequency synchronisation are also available on certain models.