TIDA-00792: Multiple boards

Hi Jonathan,
In short no. Generally there are 3 to 4 issues when stacking modules such as the TIDA-00792.
First is the voltages experienced by the modules as each switches. When a module protects with a load the module will see a large negative voltage. TIDA-00792 is not designed for this, the free wheel diode on the output will continue to flow current. You could design a switch to do this, but it is not included in this design.
Second is the communication for the upper device at a high potential. Some level shifting or isolated interface will be needed.
Third is the communication data, the host will need to understand 2 different module's data at the same address, so this could mean a bus switch or 2 communication ports. A MCU might be a good solution to collect the data from the 2 modules and present it to the system in a unified manner on a single communication port.
Fourth is handling mismatch in charge between the battery modules. If one battery powers a level shifter it may have more load and deplete sooner.
If the batteries are removable each can be charged to full externally, but if they are internal to the system some method to equalize the modules may be needed and administered by the common MCU.

Thank you for the explanation, it is useful.