How can the surge voltage be reduced?

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A surge voltage is generated by high di/dt, and wiring inductance outside the module, at the time of switching (L*di/dt). Some of the ways to suppress this problem are as follows:
(1) Add a protective circuit
(2) Reduce di/dt by adjusting RG or –VGE
(3) Reduce inductance by making the main circuit wiring thicker and shorter, and using a copper bar and parallel flat wiring
For details, refer to Application Manual Chapter 5.

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