Switching Mode Power Supply:
Figure: SMPS
Functions of SMPS:
- The Switching Mode Power Supply itself having the meaning that it mainly converts unregulated AC or DC input voltage to DC output voltage.
- Switch mode power supply technology also provide high efficiency voltage conversions in voltage step up or "Boost" applications and step down or "Buck" applications.
Working Concept of SMPS:
A switching regulator does the regulation in the SMPS. A series switching element turns the current supply to a smoothing capacitor on and off. The voltage on the capacitor controls the time the series element is turned. The continuous switching of the capacitor maintains the voltage at the required level.
Figure: Circuit Diagram of SMPS