Using two TPS546C23 chips in parallel/stacked (2-phase), theoretically it can output 70A, but when the load reaches 20A the chip has a current alarm, and then the output is automatically shut down.
Software: The value of IOUT_OC_WARN_LIMIT of the chip is 37A, and the value of IOUT_OC_FAULT_LIMIT is 42A.
Hardware: The schematic is based on the recommended circuit design, the parameters have not changed, but the actual load carrying capacity is insufficient.