Single-ended forward switching power supply design based on UCC2800 PWM controller

Switching Power Supply which has a lot of advantages compared with Linear Power Supply is used very widely in the modern life. This paper discussed a kind of DC/DC switching power supply based on the UCC2800 PWM controller chip, the basic technical indicators is DC 28V rated input voltage ranging from 16V to 40V, 5V30W output, and analyzed its working principle, soft start and short-circuit protection, finally, briefly described switching power supply design methods in the use of UCC2800 PWM controller chip.