EMI (electromagnetic interference) mitigation is a critical step in the design process in most electronic systems, and especially so in the automotive world. In many cases, automotive OEM emissions requirements are even more stringent than both national and international standards bodies like the FCC. Unfortunately, by their nature, switching regulators are sources of EMI; but, in order to keep power supply designs small and efficient, switchers are a critical component. So how can you reap the benefits of a switching regulator while still meeting challenging EMI requirements?
We are all well aware that the demand for Electric Vehicles (EV) is increasing rapidly. This four part training session begins with a description of a typical EV system in part 1. Part 2 is a brief description of how both Lead Acid and Lithium Ion batteries are charged. Part 3 concentrates on the Phase Shifted Full Bridge topology, including the reasons why it is used and a detailed description of how it operates. Finally part 4 shows how a high power battery charger can be designed using the UCC28951-Q1 and other automotive grade parts from Texas instruments.