We are looking for the reference design of LT3752/LT8311 to output 54V or 48V but only 12V or 24V can be found. Can you provide related schematic or ltspice simulation file?
Also, we have checked CHAMPS website, champs-tech.com, that your reference design is using its transformer. It has some other voltage output options by using other transformer. Do you have related schematic or reference design?