Protection supply circuit design for power electronics in automotive

The automotive electronics needs to be designed to withstand a harsh electric environment (high transient pulses, electromagnetic interference), as described in [1][2] and [3]. Oftentimes the need arises to use an electronic circuit which was not design to operate, and might be even destroyed by automotive electric environment. A supply circuit was designed to allow the non-automotive compliant circuit to operate in such an environment. The response of the protection circuit was analyzed with a simulator, were all the expected faults were applied. Hardware measurements were made to confirm the simulation result.