SMPS block diagram

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Block Diagram and Working of SMPS

The major components that constitute SMPS are as follows:

  1. Input rectifier and Filter (Diode rectifier and capacitor filter)
  2. High-frequency switch (Power transistor or MOSFET)
  3. Power transformer
  4. Output rectifier and Filter (Diode rectifier and capacitor filter)
  5. Control circuit (comparator and pulse width modulator)

The figure given below represents the functional block diagram of SMPS:

block diagram representation of switch mode power supply

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