Why smps is called switch mode

View Full Term. By clicking sign up, you agree to receive emails from Techopedia and agree to our Terms of Use and Privacy Policy. A switched-mode power supply SMPS is an electronic circuit that converts power using switching devices that are turned on and off at high frequencies, and storage components such as inductors or capacitors to supply power when the switching device is in its non-conduction state. Switching power supplies have high efficiency and are widely used in a variety of electronic equipment, including computers and other sensitive equipment requiring stable and efficient power supply.

A switched-mode power supply is also known as a switch-mode power supply or switching-mode power supply. Switched-mode power supplies are classified according to the type of input and output voltages.

The four major categories are:. Their power conversion is achieved through an inductive energy transfer alone. The non-isolated topologies have limited use and are commonly used in dc-dc regulators. They usually produce a single output whose range is again limited by the duty cycle and the input voltage. The choice of the topology to use is influenced by cost, efficiency, size and other requirements. The unregulated input dc, either from a dc source such as rectifier or a battery, is fed to the inverter section consisting of fast switching electronic devices such as MOSFETS and bipolar transistors which are driven on and off.

We recommend at least W. That said, your current w psu will run any single top card, and will likely do so in the future. Begin typing your search term above and press enter to search. Press ESC to cancel.

Ben Davis February 23, How does a switch mode power supply work? What is SMPS and its uses? Which switch is used in SMPS? What is the main function of SMPS?

Why SMPS is called switch mode? In this way the voltage on the smoothing or reservoir capacitor is maintained at the required level. The use of any technology is often a careful balance of several advantages and disadvantages.

This is true for switch mode power supplies which offer some distinct advantages, but also have their drawbacks. Switch mode power supply terminology Switch mode power supply, SMPS, technology may be referred to by a number of similar terms.

Basic concept behind a switch mode power supply The time the series element is turned on is controlled by the voltage on the capacitor. SMPS advantages High efficiency: The switching action means the series regulator element is either on or off and therefore little energy is dissipated as heat and very high efficiency levels can be achieved.

Compact: As a result of the high efficiency and low levels of heat dissipation, the switch mode power supplies can be made more compact. Costs: one of the points that makes switch mode power supplies very attractive is the cost.

The higher efficiency and the switching nature of the design means that the heat that needs to be reduced is lower than that of linear supplies and this reduces costs.