Temperature control device according to an embodiment of the present invention is an RF signal generator having a structure for generating an RF signal, and adjusts the gain for amplifying the RF signal based on a gain control signal, and the RF signal according to the adjusted gain Amplifying, an amplifier outputting the amplified RF signal, a metal converting the amplified RF signal into thermal energy and releasing the thermal energy, and detecting heat corresponding to the thermal energy emitted from the metal, A temperature sensor outputting a temperature signal corresponding to the detected heat, and receiving the temperature signal, generating a detection temperature corresponding to the received temperature signal, comparing the set temperature with the detection temperature, and the gain according to the comparison result It includes a controller for outputting the gain control signal for adjusting the to the amplifier.
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