In the automotive electronic function module protection, in addition to electrostatic protection (ISO10605), the most important to calculate the road vehicle electrical transient interference protection, that is, we usually mentioned the automotive electronic test standard ISO 7637-2 and enhanced version of ISO 16750-2 standard. Among them, the load test is to simulate the battery power loss, by the generator to supply power to the load, verify whether the load at this time can’t meet the requirements of the situation [1]. For the load throwing test, TVS is usually used to release the energy injected by the power line to achieve the purpose of protecting the later circuit.