On the journey of switching power supply design, we often encounter such a puzzle: why do we feel "omnipotent" at the beginning, only to suddenly experience a "flash of enlightenment" after breaking through the bottleneck? Behind this lies a profound psychological law—the Dunning-Kruger effect.
"Blind Confidence" in the Cognitive Fog
In 1999, Cornell University psychologists David Dunning and Justin Kruger discovered through experiments that:
those with low ability tend to overestimate their competence, while those with high ability may underestimate themselves.
In plain terms: the more ignorant one is, the more arrogant they become, whereas true masters remain humble.
Breaking Through the "Critical Point" of Knowledge Leap
When the accumulation of learning reaches a critical mass, a qualitative leap in cognition occurs.
In the study of switching power supplies, beginners often fall into the trap of "pseudo-mastery":
mistakenly believing that mastering the power stage of a Buck converter topology or other topologies equates to mastering power supply design, unaware that the real challenge lies in the feedback loop (loop compensation).
Once the power stage and loop compensation are mastered, one will find that parameter design serves the goal of dynamic stability. This "epiphany" experience is akin to the surprise of completing a jigsaw puzzle, where the knowledge network forms strongly correlated pathways.
How to learn switching power supplies? Learning switching power supplies from the "macro" to the "micro"...
To Every Power Supply Designer
As the "Tao Te Ching" states, "A massive tree grows from a tiny sprout; a nine-story tower is built from accumulated earth."
The leap in cognition begins with tiny daily progress. When we cross the ridge of cognition, we will eventually see a broader horizon.
A switching power supply is not merely a pile of components, but the art of making energy flow elegantly within constraints.