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Advantages and Disadvantages of Mainstream Led Drivers(Part 1)

Mar. 31, 2020


Over the past five years, LED lamps that have attempted to replace fluorescent lamps have seen tremendous performance improvements. In fact, efficiency, lumen output, and consistency have all improved, while costs have dropped significantly. However, there are many types of LED lights, with large selectivity, and the application scene has been changing, which has led many lighting professionals and buyers to adopt a wait-and-see attitude. The diversity of technologies, costs and services is at the root of this complexity. Fortunately, as long as you have a clear understanding of this diversity, you can successfully implement small and large-scale deployments.

The source of lamp complexity is largely related to heat dissipation. "Heat" is the enemy of LEDs and commonly called drivers. Both the driver and the LED generate heat. In addition, the specific implementation of CE LED drivers is likely to be a major difference between products from different manufacturers. In this article, the constant current led driver supplier will focus on the advantages and disadvantages of six LED drivers to provide customers with the correct lighting solutions in application scenarios.

First, install the drive in parallel

The most commonly used architecture is to install the built-in driver in a manner parallel to the length of the lamp. Its advantages include high market awareness and significant price declines.

Commonly Called Driver

Commonly Called Driver

But this solution also has many disadvantages. Parallel assembly with the LED printed circuit board (PCB) allows the heat generated by the driver to damage the LED device in some cases. The result is a reduction in performance indicators such as color, efficiency, and / or service life. In fact, the product may not completely fail, but it is also unacceptable. In areas overlapped with the driver, the parallel driver can adversely affect the phosphor coating of the LED. The change of luminous color will lead to inconsistencies between the lamps and the aesthetic inconsistency of the overall ceiling lighting. So far, this has made many buyers dispel the idea of buying.

In addition, there are other disadvantages. When the integrated parallel driver fails, the lamp itself is scrapped, with the result that the entire product must be discarded and replaced. Moreover, this design does not always support dimming. In addition, electricians are required to bypass existing ballasts during installation. Light output quality problems often occur. With the advent of the latest advances in tube insulation technology, these first-generation lamp designs have become largely obsolete.

Second, the end insulation driver

One way to achieve thermal isolation is to place the driver on the cover of one end of the tube, away from the LED device. This design has significantly better thermal performance than lamps with parallel drivers, and its price has also dropped.

Although the heat generated by the drive is isolated, since the integrated drive is not removable, the actual effect of the drive will still lead to catastrophic failure of the entire product. In addition, like parallel products, the dimming function is not always available, and the electrician must still bypass the ballast when the product is installed.