A switched-mode power supply (switching-mode power supply, switch-mode power supply, switched power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a DC or AC source (often mains power) to DC loads, such as a personal computer, while converting voltage and current characteristics.
A switch mode power supply is a power converter that utilizes switching devices such as MOSFETs that continuously turn on and off at high frequency; and energy storage devices such as the capacitors and inductors to supply power during the non-conduction state of the switching device. The supplies have higher efficiencies of up to 90%, are small in size and widely used in computers and other sensitive electronic equipment.
Power supply circuit plays an essential role in every electrical and electronic circuit to provide the electrical power to the owl circuit or loads like machines, computers, etc. These different loads require different forms of power at various ranges and characteristics. So, the power is converted into the desired form by using different power converters. Basically, different loads work with various types of power supplies like SMPS (switch mode power supply), AC power supply, AC to DC power supply, programmable power supply, high voltage power supply & uninterruptable power supply.
Geographically, North America dominated switching power supply market due to higher usage and consumption of battery operated devices requiring switching power supply. North America was followed by Europe and Asia-Pacific as the second and third largest consumer of switching power supply. Asia Pacific is projected to have the fastest growth, owing to rapidly expanding customer base for the battery operated devices, especially in the major regional economies such as India and China in the region
The overall power supply market is expected to grow from USD 25.00 billion in 2017 to USD 34.92 billion by 2023, at a CAGR of 6.7% from 2018 to 2023. Power supplies are being used in many verticals such as lighting, telecommunications, consumer electronics, medical & healthcare, industrial, food & beverages, transportation, and military & aerospace.