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Consider the following statements. 1. SMPS generates both electromagnetic and radio frequency interference due to high switching frequency. 2. SMPS has a high ripple in output voltage and its regulation is poor. 3. The output voltage of SMPS is less sensitive with respect to input voltage variation. Which of the above statements are correct?

Consider the following statements. 1. SMPS generates both electromagnetic and radio frequency interference due to high switching frequency. 2. SMPS has a high ripple in output voltage and its regulation is poor. 3. The output voltage of SMPS is less sensitive with respect to input voltage variation. Which of the above statements are correct? Correct Answer 1, 2 and 3

Advantages of SMPS:

  • For the same power rating, SMPS is of smaller size, lighter in weight, and possesses higher efficiency because of its high-frequency operation.
  • SMPS is less sensitive to input voltage variations.

 

Disadvantages of SMPS:

  • SMPS has a high ripple in output voltage and its regulation is poor.
  • SMPS is a source of both electromagnetic and radio interference due to high-frequency switching.
  • Control of radio frequency noise requires the use of filters on both the input and output of SMPS.

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