Isolated Driver or Non-isolated Driver? Which One You Choose?

In the lamps, the isolated driver and the non-isolated driver each have their own characteristics and application scenarios.

1. Isolated Driver

The isolated driver reduces the mains voltage to a lower AC voltage using a transformer, which is then rectified into DC for driving the equipment. The primary and secondary coils are not directly connected, hence the name "isolated driver." The main advantages of an isolated driver are its high safety level and strong anti-interference capability. It is particularly suitable for applications with high requirements for electrical safety, such as medical, industrial, and aviation fields that demand safety, lightning protection, and surge resistance. However, the use of transformers and other electronic components may result in larger volume and radiator size.

2. Non-Isolated Driver

The non-isolated driver primarily employs DC/DC boost (Boost) or step-down (Buck) circuits, which have a relatively simple structure and lower cost. Non-isolated drivers offer high conversion efficiency, making it easier to achieve high light efficiency and reduce the size of lamps and radiators. Although non-isolated drivers have lower safety compared to isolated drivers, the safety of non-isolated driver lamps can be enhanced through the structural design of the lamps. With advancements in driver technology, the anti-interference capability of non-isolated drivers is gradually improving, leading to their increasing popularity in LED lighting appliances.

3. Choosing the Right Driver

Isolated drivers and non-isolated drivers each have their own advantages and disadvantages in lamp applications. The selection should be based on specific application scenarios and requirements. Isolated drivers are suitable for scenarios with high demands for safety, lightning protection, and surge resistance. On the other hand, non-isolated drivers may be more appropriate for scenarios that prioritize lower cost and optimized volume, such as consumer electronics products and home lighting, where electrical safety requirements are relatively lower.