Power Supply Control is changing rapidly. Switch mode power supply (SMPS) systems are quickly evolving from analog designs to fully digital, system connected solutions. This migration is being driven by:

• Elimination of expensive magnetics
• New options which were not possible
• Sequenced start and shutdown
• Inexpensive power factor correction
• Power on test and diagnostics
• Peak current detection and shutdown
• And many more...

All of these lead to reduced BOM costs, expanded features and more satisfied customers.

Power Supply Control is fairly complex because you have to provide a digital control loop if you choose to do a fully digital design to achieve the full benefits of the technology.