{"id":3466,"date":"2026-09-14T16:15:58","date_gmt":"2026-09-14T08:15:58","guid":{"rendered":"http:\/\/www.center-intex.com\/blog\/?p=3466"},"modified":"2026-09-14T16:15:58","modified_gmt":"2026-09-14T08:15:58","slug":"what-are-the-differences-between-constant-voltage-and-constant-current-led-drivers-4882-eb491c","status":"publish","type":"post","link":"http:\/\/www.center-intex.com\/blog\/2026\/09\/14\/what-are-the-differences-between-constant-voltage-and-constant-current-led-drivers-4882-eb491c\/","title":{"rendered":"What are the differences between constant voltage and constant current LED drivers?"},"content":{"rendered":"

Hey there! As a supplier of constant voltage LED drivers, I often get asked about the differences between constant voltage and constant current LED drivers. So, I thought I’d put together this blog post to explain the ins and outs of both types of drivers and help you understand which one might be the best fit for your lighting project. Constant Voltage LED Drivers<\/a><\/p>\n

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What are LED Drivers?<\/h3>\n

Before we dive into the differences between constant voltage and constant current LED drivers, let’s first quickly go over what LED drivers are. Simply put, an LED driver is like the power supply for your LED lights. LEDs are sensitive devices, and they need a stable and regulated power source to operate efficiently and safely. That’s where LED drivers come in – they convert the incoming electrical power into the appropriate voltage and current that your LEDs need to shine bright.<\/p>\n

Constant Voltage LED Drivers<\/h3>\n

Let’s start with constant voltage LED drivers, which are what I supply. As the name suggests, a constant voltage LED driver maintains a steady voltage output, regardless of the current draw of the connected LEDs. This means that no matter how many LEDs you connect in parallel (as long as you don’t exceed the driver’s maximum wattage capacity), the voltage across each LED will remain the same.<\/p>\n

For example, if you have a 12V constant voltage LED driver, it will keep outputting 12 volts to the LEDs, no matter if you’re using a single LED or multiple LEDs connected in parallel. This makes constant voltage LED drivers really easy to use, especially for simple lighting setups like LED strip lights or small decorative lighting projects.<\/p>\n

One of the big advantages of constant voltage LED drivers is their flexibility. You can easily add or remove LEDs in parallel without having to worry too much about the electrical configuration. This makes them a popular choice for DIYers and small-scale lighting applications where you might want to customize your lighting setup over time.<\/p>\n

Another plus is that constant voltage LED drivers are generally more affordable than constant current drivers. They’re also easier to find in the market, as they’re used in a wide range of consumer-grade LED lighting products.<\/p>\n

However, constant voltage LED drivers do have their limitations. Since they maintain a constant voltage, the current flowing through the LEDs can vary depending on the load (the number of LEDs connected). If you connect too many LEDs or if there’s a short circuit in the system, the current can spike, which might damage the LEDs or the driver itself. So, it’s important to make sure you stay within the driver’s rated wattage and follow the manufacturer’s installation guidelines.<\/p>\n

Constant Current LED Drivers<\/h3>\n

On the other hand, constant current LED drivers maintain a steady current output, regardless of the voltage across the LEDs. This is especially important for high-power LEDs, which require a precise and stable current to operate at their optimal performance and lifespan.<\/p>\n

For instance, if you have a 350mA constant current LED driver, it will supply 350 milliamperes of current to the LEDs, even if the voltage across the LEDs changes due to factors like temperature or the number of LEDs in the string. This helps to ensure that each LED in the series receives the same amount of current, which is crucial for consistent brightness and color across the entire lighting array.<\/p>\n

Constant current LED drivers are a must for applications where you need high brightness and precision, such as commercial lighting, outdoor lighting, and stage lighting. They can handle larger LED loads and are more stable under varying environmental conditions, making them a reliable choice for demanding lighting projects.<\/p>\n

But there’s a trade-off. Constant current LED drivers are usually more expensive than constant voltage drivers because they require more sophisticated electronics to regulate the current. They’re also less flexible in terms of installation. You need to carefully calculate the number of LEDs you can connect in series based on the driver’s output voltage and current ratings. If you connect the wrong number of LEDs, it can lead to overheating or premature failure of the LEDs or the driver.<\/p>\n

Key Differences at a Glance<\/h3>\n

Here’s a quick summary of the main differences between constant voltage and constant current LED drivers:<\/p>\n