The differences between Constant Voltage& Constant Current LED Driver
With the popularity of the concept of energy saving and environmental protection, the LED lighting market has ushered in rapid development. The market demand for efficient, stable LED drivers is growing. LED driver is an essential component in LED lighting systems, serving as the power supply that regulates and provides the necessary current and voltage to operate LED lights safely and efficiently.
Constant Voltage and Constant Current LED drivers are two common types used to drive LED lamps, and they have significant differences in design and application.
Here's a detailed comparison of them:
1. Characteristics of Output
Constant voltage LED driver: The output voltage is constant, and the current varies according to the load. Output voltage is the multiple of 12, such as 12V/24V/48V. On this basis, Ottima 5-in-1 Junction Box LED Driver can also fine tuning the output voltage in a range about 1-2V. When it be applied on a long LED Strip, will reduce the effect from voltage drop.
Constant current LED driver: The output current is constant, and the voltage varies(in a limited range) according to the precise load.
2. Modes of Connection:
Constant voltage LED driver: parallel connection. Constant voltage driver is usually used when multiple LED lights are connected in parallel, and each LED or LED module has its own current control device. It’s more easier to use and recondition. So that popular in do-it-yourself projects and custom installations because of their ease of use and the wide availability of compatible products and accessories.
Constant current LED driver: series connection. As there is only one current path and all the LEDs along the current path have the same current flowing through them. The constant current driver ensures that the LED works under a stable current, avoiding inconsistent brightness and shortened life caused by current fluctuations. But if there exist a failure unit, all unit will be influenced.
3. Occasions of Application :
Constant voltage driver: suitable for LED light strip, decorative lighting, and other occasions that need a flexible layout.
Constant current driver: Suitable for applications requiring precise current control, such as artistic lighting, down light, spotlight, outdoor lighting, commercial lighting, etc.
4. Complexity of Design&Install:
Constant voltage driver: Easy to design and install.
Constant current drivers: Relatively more complex in design&install. Current control needs to be considered in the design, and proper series connections need to be ensured when installed.
5. Suggestion of Selection
When we are selecting LED drivers, it is necessary to decide whether to use constant voltage or constant current drivers according to specific application occasions and needs. Constant voltage LED drivers are a good choice for applications where flexible installation is required, LED lights have a fixed voltage requirement but can vary in current. Constant current LED drivers are more suitable for occasions where the LED load has a known and consistent current requirement. The voltage can vary as needed.
As a professional led driver manufacturer, Ottima factory concentrated on high-quality led driver development and production since 2006. Ottima LED Driver included both of constant voltage and constant current LED drivers. UL/ ETL /FCC/ CE/ SAA/ Rohs Listed. 2/3/5/7 Years Warranty. Outdoor&Indoor. Dimmable&no dimmable LED driver. OEM brands.
