The TDP rating is a maximum rating. If your CPU is running at full speed when loaded then that is all the power it needs. If your CPU is not able to run at full speed when fully loaded then that is a different problem.
Run CPU-Z or HWiNFO and see what speed your CPU is running at when loaded. Run a simple benchmark program like Cinebench R20.
CINEBENCH is a real-world cross platform test suite that evaluates your computer's performance capabilities. CINEBENCH is based on MAXON's award-winn
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What speed is your CPU running at while R20 is running?
I believe you add the cores and pkg power to get total draw.
That is not true. The Package Power is the power consumption of the entire CPU package. It includes the IA Cores, the GT and the Uncore. You add those 3 together to get the CPU package power.
Power consumption reported by Intel CPUs is not 100% accurate. It is not measured power consumption so do not lose sleep over whatever this reports as long as your CPU is running at full speed.
Edit - It is a 2 core CPU. The 54W power rating was very generous.