ABSTRACT
This chapter introduces the concept of worst-case corners, and discusses how to find them. An important outcome for a making a design is learning about design. In the old days, designers typically focused and spent probably more time on circuit functionality, for analysis and deep understanding, besides pure verification. During the design phase, designers collect a lot of know-how and invent new circuits and system solutions. Checking the design at the most extreme parameter combinations is intuitively a good verification method as it is less risky than spec margin approaches. Solving the problem about the worst-case is a key point in design, and the other one is finding ways to improve the design efficiently.
