How to reduce the excessive ripple of switching power supply output
The switching power supply I made has a 12V output, but the ripple is very large, with 400MV. How to reduce the output ripple?
The topology is a flyback circuit, with a step-down transformer, closed-loop control, using the DM0265 chip

Related article: https://www.utmel.com/blog/categories/powersupply/why-your-power-supply-ripple-is-so-big