You may have heard that SMPS powers your PC. It is the same topic that will be discussed. For example, SMPS may power various DC-powered devices, including CCTV cameras, motors, etc. Therefore, we shall discuss what SMPS is and how it operates.
What exactly is SMPS?
SMPS module comprises multiple inductors, capacitors, and semiconductors, such as diodes and MOSFETs; it transforms alternating current voltage to direct current voltage. We use it as opposed to a linear supply/power adapter since it provides more efficiency. It is vital in all electrical equipment (like mobile chargers, PC power supplies, etc.).
It uses semiconductor switches to regulate the output voltage by cycling the supply voltage on and off at a preset switching frequency. When you alter the switching frequency, the output voltage will vary.
Now that we understand what SMPS is, we will discuss its operation, functionality, and inner workings.
How does It Function?
When an SMPS receives AC input, it converts it to DC. This conversion from AC to DC is known as rectification. It will be skipped when DC voltage is provided. The rectifier is built as a voltage doubler in a PC power supply by including a manually/automatically operable switch. The rectifier’s unregulated DC voltage is delivered to a filter capacitor. Surrounding the AC voltage peaks, the current from the main supply consists of brief pulses.
These high-frequency bursts diminish the power factor. Modern SMPS employ a specialized Power factor correction circuit to rectify the power factor by causing the input current to match the sinusoidal form of the AC input voltage. Active power factor correction power supplies are often auto-ranging, providing input voltages between 100 VAC and 250 VAC without an input voltage selection switch.
SMPS designed for AC input may operate from a DC source since DC passes through the rectifier unmodified.
Power Supply Solutions are Globally Accessible
Mornsun is a provider of comprehensive power supply solutions. Mornsun has released over 6,000 high-quality products, including AC/DC converters, DC/DC converters, AC/DC enclosed smps power supply, transceiver modules, signal conditioning modules, IGBT drivers, LED drivers, EMC auxiliary devices, etc., for a variety of applications and industries, based on its years of experience in power supply design and manufacturing.