Distinctive Merit

Microcontroller-Based Variable Switched-Mode DC Power Supply
With the feedback control designed around a 3687 microcontroller, this application provides superior control of a variable switched-mode DC power supply. The novel switched-mode technique enables higher than usual efficiency, which means less heating and denser packaging of the power supply unit. The digital controller uses the robust PID control to effectively regulate the output voltage, even during events such as line and load condition changes. A power factor correction stage acts as a preconverter, which further increases the project’s efficiency.

Evan Espina, Lawrence Tan, and Rochie Libby
Philippines
evan.espina@up.edu.ph, law@eee.upd.edu.ph

Abstract | Entry