Radiation Tolerant 28V to 12V, 144W Output Push-Pull Converter Evaluation Board

The ISL73846MEV1Z is an evaluation platform for a radiation tolerant push-pull power supply, built around the ISL73846M PWM controller. It converts a nominal 28V input (20V to 36V range) to a regulated 12V output, capable of delivering up to 12A continuous load current, and is optimized for space and high-reliability applications.

The design features synchronous rectification on the secondary side to improve efficiency and thermal performance. It operates at 200kHz per switch (effective 400kHz at the output filter), maintains ± 2% output voltage regulation, and supports ± 3% deviation during 0A to 12A load transients.

The included ISLFBKISOEV1Z feedback daughter card enables signal-level isolation for both the output voltage feedback and synchronous rectifier PWM signals, while still allowing for accurate regulation during both steady-state operation and fault conditions.

Together, the ISL73846MEV1Z and ISLFBKISOEV1Z offer a comprehensive platform to evaluate the performance, control flexibility, and robustness of the ISL73846M in demanding isolated power supply applications.