The MCOTS-C-28V-28-HY-N-M-F from SynQor is a Military COTS Half-Brick DC-DC Converter that converts an input voltage of 9 - 40 V to an output voltage of 28 V. It provides an output current of 18 A and has an efficiency of 96%. This converter has been designed to comply with a wide range of military standards such as RTCA/DO-160E Section 16, DEF-STAN 61-5 (Part 6) (Part 5 or 6), and MIL-STD-461 (C, D, E, and F). It uses a two-stage power conversion topology where the first stage provides constant output voltage over variations in line, load, and temperature while the second stage uses a transformer for proper input-to-output isolation and voltage step-down functions. This DC-DC converter switches at a fixed frequency on both the first and second-stage to ensure a predictable electromagnetic interference (EMI) performance. It also includes an option for high capacitance to offer very large output capacitances and support extreme transient applications.

This military-qualified converter has built-in input under voltage lockout (UVLO), output current limit, output short-circuit protection (SCP), active back bias limit, auto-recovery output over-voltage protection (OVP), and thermal shutdown to prevent false trigger and over-current-related damages. It integrates on/off control referenced to input return and output voltage sensing for remote monitoring and control. The DC-DC converter is available in a module that measures 2.49 x 2.39 x 0.51 inches.