关键词: 智能功率器件；感性负载能量；钳位电压；电子保险丝；电子电气架构

Abstract: With the development of automotive electronic technology, upgrading of electronic architecture also drives the large-scale application of intelligent power device in vehicle load drive. For loads with large sensing capacity, such as wipers, blowers, fans and relays, the impact of the energy generated when the load is turned off on the system needs to be considered, and the driver cannot be broken down by the energy. This paper provides a method and tool to evaluate and measure the inductive energy. In a well-defined application scenario, the energy generated by instantaneous turn off is compared with the energy capability of intelligent power device itself to ensure whether the intelligent power device and system can work reliably for a long time.

Key words: Intelligent power device; Inductive load energy; Clamping voltage; Electronic fuse; Electronic architecture