An induction heating device , comprising: a working coil (WC); an inverter comprising a first switching element (S1) and a second switching element (S2) that are configured to perform a switching operation to thereby apply resonant current to the working coil (WC); a gate driver comprising a first sub-gate driver and a second sub-gate driver that are configured to be driven based on a drive voltage received from an external power supply , that are connected to the inverter , and that are configured to control the switching operation, the first sub-gate driver and the second sub-gate driver being configured to turn on and turn off the first switching element (S1) and the second switching element (S2), respectively; and a protection circuit disposed between the inverter and the gate driver , the protection circuit comprising: a first resistor (R1) disposed between a gate terminal of the first switching element (S1) and an output terminal of the first sub-gate driver , a second resistor (R2) connected electrically in parallel to the first resistor (R1), a protection circuit resistor (Rpt) disposed between a reference voltage terminal (Vs) of the first sub-gate driver and a first node (N1) between the first switching element (S1) and the second switching element (S2), a protection circuit diode (Dpt) disposed between a ground (G) and a second node (N2) between the protection circuit resistor (Rpt) and the reference voltage terminal (Vs), and a bootstrap circuit disposed between the second node (N2) and the external power supply . a working coil (WC); an inverter comprising a first switching element (S1) and a second switching element (S2) that are configured to perform a switching operation to thereby apply resonant current to the working coil (WC); a gate driver comprising a first sub-gate driver and a second sub-gate driver that are configured to be driven based on a drive voltage received from an external power supply , that are connected to the inverter , and that are configured to control the switching operation, the first sub-gate driver and the second sub-gate driver being configured to turn on and turn off the first switching element (S1) and the second switching element (S2), respectively; and a protection circuit disposed between the inverter and the gate driver , the protection circuit comprising: a first resistor (R1) disposed between a gate terminal of the first switching element (S1) and an output terminal of the first sub-gate driver , a second resistor (R2) connected electrically in parallel to the first resistor (R1), a protection circuit resistor (Rpt) disposed between a reference voltage terminal (Vs) of the first sub-gate driver and a first node (N1) between the first switching element (S1) and the second switching element (S2), a protection circuit diode (Dpt) disposed between a ground (G) and a second node (N2) between the protection circuit resistor (Rpt) and the reference voltage terminal (Vs), and a bootstrap circuit disposed between the second node (N2) and the external power supply . a first resistor (R1) disposed between a gate terminal of the first switching element (S1) and an output terminal of the first sub-gate driver , a second resistor (R2) connected electrically in parallel to the first resistor (R1), a protection circuit resistor (Rpt) disposed between a reference voltage terminal (Vs) of the first sub-gate driver and a first node (N1) between the first switching element (S1) and the second switching element (S2), a protection circuit diode (Dpt) disposed between a ground (G) and a second node (N2) between the protection circuit resistor (Rpt) and the reference voltage terminal (Vs), and a bootstrap circuit disposed between the second node (N2) and the external power supply . <EOS>