The solution is based on the EG1190 chip, using a non-isolated BUCK topology to achieve an output of 5V/12V, 8A. The input voltage range is 11V - 85V (for 5V output) and 18V - 85V (for 12V output), with a maximum efficiency of 92.5% (when outputting 12V), and can be customized with an enable control line.
Scheme characteristics