All You Need to Know About Working and Functionality of SMPS (Switched-Mode Power Supply)

In : Technology By About :-6 years ago

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All You Need to Know About Working and Functionality of SMPS (Switched-Mode Power Supply)

Technology is growing day by day. New inventions are in the lineup and they are trying to make the human’s life easier. In the same way, SMPS or we can say Switched-Mode Power Supply introduced.

What is SMPS?

SMPS or Switched-Mode Power Supply basically an electronic circuit that is used to convert power with the help of switching devices that are turned off and on at higher frequencies and also it supplies power through storage components like capacitors or inductors while the switching device lies under the state of non-conduction.

What is Functionality of SMPS or how SMPS works?

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SMPS basically converts the wall voltage AC power to the lower voltage DC power. At the early stage of computer development, linear power supplies have used that consist of linear regulators and larger transformers which resulted as excessive energy waste. But now SMPS can supply up to 90?tter efficiency in a smaller package. SMPS consist indicators that are made of magnetic field to store energy.

A basic isolated AC to DC SMPS consists of:

Inverter consisting of switching devices such as MOSFETs

Input rectifier and filter

Output rectifier and filter

Transformer

Feedback and control circuit

What is the voltage of SMPS of computers?

Nowadays modern computers require the power of around 1.2-3.3V whereas some older devices require the power of 5 to 12V DC. The SMPS had much lower conversion efficiency from the 110 or 220V AC power than the more modern SMPS designs that can reach efficiencies of 90% or better.

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How much it costs or what is the price of SMPS?

That totally depends on your requirements, the price of SMPS starts from INR 300 and can go up based on the brands you choose or based on the functions you choose.

What are the advantages and disadvantages of SMPS?

Advantages of SMPS

Efficiency will be higher from 68% to 90%

Reliable and regulated outputs

Lighter in weight and smaller in size

Flexibility

High powered density

Disadvantages of SMPS

May generate electromagnetic interference

The circuit design is very complex

While comparing linear devices SMPS are expensive.

Is any other use of SMPS?

SMPS can be used in many devices rather than computers such as battery operated devices, sensitive electronics and other equipment that require high efficiency.