Technology today plays a major role in the lives of all of us. Every day engineers work to exceed previous chips limits in performance, area occupation and power consumption expanding the quality of services that every day the most modern technologies make available to the user. In this thesis, the development of a complex chip for wireless charging is presented. The goal of the thesis work is to present all the steps from the "pen and paper" design to the actual production of the device. The experience in STMICROELECTRONICs has allowed me to know all aspects of this complicated process, where teams of people with different skills and goals work synergistically to achieve the ultimate goal of meeting the specifications required by the customer.