What is the difference between switch mode power supply and regulated power supply?

Published: 8 April 2022

What is the difference between switch mode power supply and regulated power supply?

The main difference between a switch mode power supply and a regulated power supply is that the former uses switches to control the flow of energy, while the latter uses linear regulators. This means that switch mode power supplies are more efficient than regulated power supplies, since they don't have to convert all of the incoming energy into heat. However, switch mode power supplies can generate more noise than regulated power supplies, so it's important to choose the right type of power supply for your application.

The type of industries switch mode power supplies are used in include industrial, medical, military, and telecommunications.

There are two main types of switch mode power supplies: those with isolated outputs and those with non-isolated outputs. Isolated output power supplies have their own independent power circuits, which helps to reduce the risk of ground loops and noise contamination. Non-isolated output power supplies don't have this feature, which means they're more vulnerable to noise and ground loop issues.

When choosing a switch mode power supply, it's important to take the following factors into consideration: the output you need, the efficiency of the power supply, the level of noise it produces, and the price. Switch mode power supplies are more expensive than regulated power supplies, but they're also more efficient and produce less noise.

Regulated power supply would be suitable for applications where there is a need for low noise and high stability, such as in audio equipment.

Switch mode power supply would be more suitable for applications where space is limited, such as in portable electronics, or where weight is a concern, such as in aircraft.

What are the pros and cons of using a switch mode power supply?

The main advantage of using a switch mode power supply is that it's more efficient than a regulated power supply. This means that it doesn't have to convert all of the incoming energy into heat, which makes it more environmentally friendly. Additionally, switch mode power supplies are smaller and lighter than regulated power supplies, making them more suitable for applications where space is limited.

We have a range of switch mode power supplies to choose from our leading manufacturers including Mornsun enclosed switched power supplies (LM15 series)  and Cincons open frame - Cincon CFM series

View our full range of power supplies by clicking here

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