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A Seamless and Unified Flow for Robust Development of DC-DC Digital Controllers

State-of-the-art DC-DC converters are very complex IPs featuring a broad range of functionalities, and their development is crucial from the early stage. Digital state-machines are the core of DC-DC controllers, and their design must be carefully taken into account; leveraging our agile approach is possible to ease the whole DC-DC development and finally reduce the time to market. Initially, referring to mobile AMOLED applications, a specific exemplary case of complex DC-DC is presented. An overview of the asynchronous design flow and its importance is depicted, while all the aspects concerning the DC-DC digital controller implementation in each design phase are detailed. Silicon results showing a DC-DC developed with the presented flow are then demonstrated. Finally, considerations regarding potential new features that may be easily embedded within the proposed flow are outlined, paving the future for possible improvement to overcome ever increasing DC-DC challenges.