An Overview of SMPS:
The SMPS full form is Switched-Mode Power Supply/ Switching Mode Power Supply. Generally, a power converter known as SMPS uses energy storage components like capacitors and inductors to provide power when the switching device is in the non-conducting state, and switching devices like MOSFETs, continually turn on and off at high frequency. The supplies are compact, offer up to 90% greater efficiency, and are frequently utilized in computers and other delicate electronic devices.
Here the basic and primitive Switched-Mode Power Supply are classified according to supply input and output voltage.
- AC to DC – Off-line DC power supply
- DC to DC – Converter
- DC to AC – Inverter
- AC to AC – Cycloconverter of frequency changer.
How power is transmitted from the input to the output is determined by the topology of the circuit. In a power transformer, various outputs based on the number of wingdings and isolation make up the majority of topologies. The power transform provides voltage scaling dependent on the turn ratio. Since the buck and boat topologies don’t employ a transformer, they are not isolated.
The non-isolated topologies are frequently employed in the DC-DC regulators but have a restricted application. The range of the output is typically constrained by the duty cycle and input voltage.
Perks of SMPS:
- The SMPS designs employ smaller transformers and they are more compact. For the majority of electronic devices with limited space, the ability to downsize the supply is both a benefit and a necessity.
- High performance 68% to 90%.
- Innovative Technology.
- The output of the transformer-isolated suppliers is constant regardless of the input supply voltage.
- A lot of power density.
Cons of SMPS:
- The SMPS full form is Switched-Mode Power Supply/ Switching Mode Power Supply, its drawbacks are given below.
- Additional external components that take up more space and generate EMI and electrical noise.
- Complex Design.