Fig. 1. Basic block diagram of the electronic control unit（ECU）

Fig. 2. Backdoor coupling approach of the electromagnetic pulse

Fig. 3. Test configuration of high electromagnetic pulse effect

Fig. 4. Power connection diagram of vehicle chassis

Fig. 5. Waveform of the voltage coupled on the power line

Fig. 6. Equivalent schematic diagram of protective circuit

Fig. 7. Test configuration for protection effectiveness verification

Fig. 8. Coupling voltage waveform of input port

Fig. 9. Residual voltage waveform of output port