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What is the use of SMPS?
SMPS is an electronic power supply system that makes use of a switching regulator to transfer electrical power effectively. It is a PSU (power supply unit) and is usually used in computers to change the voltage to the appropriate range for the computer.
Are Switching Power Supplies good?
Switching power supplies are designed for high efficiency and small size. With a good design, a switching power supply can have excellent load and line regulation. They can either step up or step down the input voltage to get the desired output voltage.
Are Switching Power Supplies regulated?
A switch mode power supply regulates an output voltage with pulse width modulation (PWM). Any regulation required to keep the output voltage consistent is handled by adjusting the pulse width of the high-frequency waveform.
Why SMPS is called switch mode?
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.
What is switched mode power?
Switched-mode converters are DC/DC converters, dedicated to the supply of DC loads with a regulated output voltage and protections against overcurrents and short circuits. Then, a non-controlled rectifier (diode rectifier) realises the conversion from AC to DC.
How is the switching frequency in an inverter determined?
The rate at which the DC voltage is switched on and off during the pulse width modulation process in a switching power supply. The switching frequency in an inverter or converter is the rate at which the switching device is turned on and off.
Why is the frequency of a switch regulator important?
The basic idea here is that higher frequency means lower efficiency. This makes sense if you think about it: Switch-mode regulation is efficient because it takes advantage of the low power dissipation associated with a transistor’s “fully on” and “fully off” states.
Significant power dissipation occurs only in the intermediate region between on and off, and if a transistor switches between on and off more frequently, more power is wasted and efficiency drops. The following plot provides an example of the relationship between switching frequency and efficiency.
What is the typical switching frequency of a circuit?
Typical frequencies range from a few KHz to a few megahertz (20Khz-2MHz). Increased switching frequency reduces size of associated components such as the inductors, transformers, resistors and capacitors in addition to reduced space requirements on the board and case.