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What is an SMPS?

April 26, 2017PSU smps

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What is an SMPS?

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SMPS is an acronym for Switched Mode Power Supply which is a power supply that produces a desired voltage by rapidly switching between full power on and full power off. The average between these two voltages produces the power needed for a device. In many cases, these power supplies are used to convert from AC power supplied by the power company to DC regulated power used by devices. The switching taking place at an SMPS is happening at such a high frequency that the power to the device is not completely lost. For example, an automated motor may be connected to a switched mode power supply and the motor will be started when the SMPS is turned on. Then the SMPS will cut off power and restore it almost immediately, allowing the motor to continue powering up. While there will be some decrease in the power supplied to the motor when the power is cut, this will merely slow the motor during the startup process. When the SMPS kicks back on, the motor will continue starting. This process may s