SMPS(Switched Mode Power Supply).It’s a module that consists of multiple inductors, capacitors and semiconductor devices such as diodes and MOSFETs. It converts AC Voltage to DC Voltage. We use it instead of a linear supply/power adapter because it gives better efficiency. It plays a major role in almost all electronic equipment (like mobile chargers, PC power supplies, etc).
It works on semiconductor switch type MOSFET to switch on-off the supply voltage at a particular switching frequency to control the output voltage. When you change the switching frequency it will change the output voltage.
so now that we know what is SMPS basically we will move on to its working and functionality. How things go inside.