Power management IC architecture in automotive environment: Case study of rear view camera

This paper describes the system design considerations and challenges faced during the design of automotive power management ICs (PMIC). Rear view camera have been considered as a case study because of wide spread acceptance as driver assistance systems. Optimal IC architectures with DC-DC and LDO combination and their trade-offs have been carefully analyzed. Key considerations regarding automotive transients, high temperature, IC technology, package and pinout have been analyzed and a two-chip architecture has been proposed as an optimal partitioning between cost, efficiency and reliability in harsh automotive environment.