From the above analysis of the source of ripple and noise, the method for reducing ripple and noise can be improved on the basis of the source.
For example, when reducing ripple, the measures that can be taken are:
Increase the switching frequency
Reduce capacitor ESR
Increase the output capacitor magnitude
increase inductance
Capacitors with different values are connected in parallel
The measures you can take to reduce noise include:
Reduce loop area
Chip with better dynamic response
Optimize PCB layout and traces
Add RC-snubber absorption circuit
High-frequency noise source and sensitive source partition design
