In all types of LED lighting applications — from interior spaces and commercial buildings to outdoor landscape lighting and advertising display systems — the LED power supply remains the core component that determines the overall stability and reliability of the system.
The performance of an LED system depends not only on the led strip and power supply pairing, but also on whether the power delivery method is properly matched to the specific voltage, wattage, and control requirements. For this reason, selecting the right constant-voltage led strip power source or constant-current led driver for led strip based on the application environment is an essential step in any real-world project design and installation.
A well-configured power setup directly influences the final lighting result, as well as the long-term service life and maintenance costs of the system. Stable power output effectively reduces failure rates and improves overall operational consistency.
In modern lighting systems, LED drivers are widely used across indoor lighting, outdoor lighting, automotive lighting, display systems, advertising signage, and decorative lighting — making them an indispensable foundation for achieving stable and efficient illumination.
What Is LED Power Supply & Driver?
An LED driver — also referred to as an LED power supply or LED transformer — is a power device designed to deliver stable voltage or current to LED strip lights.
Its core function is to convert incoming alternating current (AC) into direct current (DC) that LEDs can use, outputting either constant-voltage or constant-current power based on specific application requirements. This ensures the LED system operates safely and consistently within its rated parameters.
A led tape driver can support both dimmable and non-dimmable control modes, and is capable of powering single or multiple LED strips from a centralized source — making it suitable for lighting projects of varying scales.
In practical applications, its primary functions include:
- Delivering stable output voltage or current
- Preventing overload and current fluctuation
- Protecting LEDs from damage
- Ensuring consistent, long-term illumination of the strip
Through precise power management, the led strip adapter not only enhances the reliability of the lighting system but also significantly extends its overall service life.
Constant Voltage vs. Constant Current: Key Differences and Application Scenarios
Both constant-voltage and constant-current power supplies play a fundamental role in LED lighting systems, yet their operating principles and ideal use cases differ significantly — directly affecting strip performance and service life.
What Is a Constant Voltage LED Driver?
A constant-voltage LED driver is a power device that maintains a fixed output voltage — commonly 12V or 24V — while allowing the output current to vary automatically in response to the actual load.
This type of led strip power source is typically used with LED strips that have current-limiting components built in, such as flexible strip systems with integrated resistor structures. As long as the total power draw remains within the driver's rated capacity, the voltage stays stable, providing consistent and reliable power to the strip.
As strip length or the number of connected runs increases, the system's current demand will change accordingly — but this does not affect the output voltage. This is precisely why constant-voltage led strip and power supply configurations are so widely compatible with standard LED strip applications.
What Is a Constant Current LED Driver?
A constant-current LED driver is a power supply type built around current stability as its primary control method. It maintains a fixed output current while allowing the voltage to adjust automatically within a defined range, accommodating different quantities or specifications of LED chips.
During LED operation, current is the critical factor affecting both lifespan and performance. Unstable or out-of-range current can lead to brightness fluctuation, increased heat generation, and accelerated lumen depreciation — and may cause component failure over extended use.
A constant-current led driver for led strip continuously monitors and regulates output current through internal control circuitry, ensuring each LED operates under consistent current conditions. This delivers uniform illumination across the entire system while minimizing performance variation caused by uneven current distribution.
This power solution is particularly well-suited for lighting systems where consistency is critical — including industrial lighting, high-power modules, and engineering projects with strict requirements for longevity and operational stability.
Constant Current vs. Constant Voltage: A Comparison
Key Features of LED Power Supplies
An LED driver is not simply a power conversion device — it also serves as a critical protection unit within the lighting system, ensuring stable LED operation across a wide range of demanding environments.
In engineering applications, its key features include:
- System Protection: Capable of handling abnormal conditions such as overload, short circuit, and overvoltage, reducing the risk of fixture damage
- Stable Output Performance: Maintains consistent power delivery under varying load conditions, ensuring steady light output
- Environmental Adaptability: Certain models feature waterproof, dustproof, and interference-resistant designs, making them suitable for both indoor and outdoor installations
- Improved Operational Reliability: Reduces flickering and minimizes fault occurrence, enhancing overall system stability and service life
Through these capabilities, the led strip adapter provides continuous, safe, and stable power support for lighting systems — establishing it as an essential foundation component for the long-term, reliable operation of any LED installation.
LED Power Supply Types
LW Lighting offers a comprehensive range of LED power supply solutions, covering everything from basic residential lighting to large-scale engineering projects. Our products are used in over 200 countries and regions worldwide, with a lineup that
includes MeanWell drivers, dimmable drivers, non-dimmable drivers, slim non-dimmable drivers, and adaptor drivers.
MeanWell Drivers
MeanWell is one of the most recognized brands in the industry, offering power outputs ranging from 20W to 500W, with output voltages of 5V, 12V, and 24V, and a wide input voltage range of 100–240V AC — making them a go-to choice for
engineering-grade projects. Both waterproof and non-waterproof versions are available.
MeanWell drivers are known for their high quality, consistent performance, and reliability. Built with premium components and subject to rigorous quality control, they are designed to operate stably under a wide range of conditions, with built-in
protection against overload and overheating. Their broad applicability and strong market reputation make them a preferred option among engineers and lighting designers.
IP20 MeanWell Drivers
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| LRS-75-12 | LRS-100-12 | LRS-150-12 |
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| LRS-200-5 | LRS-200-12 | LRS-350-24 |
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| LRS-75 | AC100-250V | 5V,12V,24V,36V,48V | 75W | 6.25A | 3.1A | 99*97*30mm |
| LRS-100 | AC100-250V | 5V,12V,24V,36V,48V | 100W | 6.25A | 4.16A | 129*97*30mm |
| LRS-150 | AC100-250V | 5V,12V,24V,36V,48V | 150W | 12.5A | 6.25A | 159*97*30mm |
| LRS-200 | AC100-250V | 5V,12V,24V,36V,48V | 300W | 25A | 12.5A | 215*115*30mm |
| LRS-350 | AC100-250V | 5V,12V,24V,36V,48V | 350W | 29A | 14.6A | 215*115*30mm |
MeanWell Waterproof Drivers
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| XLG-100-24-A | XLG-150-H-A | XLG-200-H-A |
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| XLG-75 | AC100-305V | DC12V/DC24V | 75W | 6.25A | 3.1A | 140*60*32mm |
| XLG-100 | AC100-305V | DC12V/DC24V | 100W | 8.3A | 4.16A | 140*60*32mm |
| XLG-150 | AC100-305V | DC12V/DC24V | 150W | 12.5A | 6.25A | 180*63*35.5mm |
| XLG-200 | AC100-305V | DC12V/DC24V | 200W | 16.6A | 8.3A | 199*63*35.5mm |
| XLG-240 | AC100-305V | DC12V/DC24V | 240W | 20A | 10A | 219*63*35.5mm |
| XLG-320 | AC100-305V | DC12V/DC24V | 320W | 26.6A | 13.3A | 246*77*39.5mm |
Non-Dimmable Drivers
Non-dimmable drivers are LED power supplies without dimming functionality. Thanks to their excellent cost-to-performance ratio, they are an ideal choice for standard lighting applications where fixed brightness is required. These drivers are straightforward to manufacture and install, keeping project costs low. With power options ranging from 36W to 300W, they accommodate a wide variety of project requirements across different industries. Waterproof and non-waterproof versions are available to suit different installation environments.
IP20 Non Dimmer Ordinary Power Supply
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| S-36W-24 | S-60W-12 | S-72W-24 |
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| S-150W-12 | S-200W-12 | S-300W-12 |
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| S-36W-24 | AC100-250V | DC12V/DC24V | 36W | 3A | 1.5A | 110*80*36mm |
| S-60W-12 | AC100-250V | DC12V/DC24V | 60W | 5A | 2.5A | 110*78*36mm |
| S-72W-24 | AC100-250V | DC12V/DC24V | 72W | 6A | 3A | 160*100*42mm |
| S-100W-24 | AC100-250V | DC12V/DC24V | 100W | 8.5A | 4.16A | 160*98*42mm |
| S-120W-24 | AC100-250V | DC12V/DC24V | 120W | 10A | 5A | 160*98*42mm |
| S-150W-12 | AC100-250V | DC12V/DC24V | 150W | 12.5A | 6.25A | 199*98*42mm |
| S-200W-12 | AC100-250V | DC12V/DC24V | 200W | 16.5A | 8.3A | 199*98*42mm |
| S-300W-12 | AC100-250V | DC12V/DC24V | 300W | 25A | 12.5A | 200*110*50mm |
IP20 Non Dimmer Easy join Power Supply
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| GT-60W | AC100-250V | DC12V/DC24V | 60W | 3A | 1.5A | 110*80*36mm |
| GT-100W | AC100-250V | DC12V/DC24V | 100W | 8.3A | 4.16A | 110*78*36mm |
| GT-200W | AC100-250V | DC12V/DC24V | 200W | 16.5A | 8.3A | 160*100*42mm |
| GT-300W | AC100-250V | DC12V/DC24V | 300W | 25A | 12.5A | 160*98*42mm |
| GT-400W | AC100-250V | DC12V/DC24V | 400W | 33A | 16.5A | 160*98*42mm |
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| JP-DC12V-36W | SKI-60W-SICV | SKI-100W-SICV |
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| JP-36W | AC100-250V | DC12V/DC24V | 36W | 3A | 1.5A | 157*52*20mm |
| SKI-60W-SICV | AC170-265V | DC12V/DC24V | 60W | 5A | 2.5A | |
| SKI-100W-SICV | AC170-265V | DC12V/DC24V | 100W | 8.3A | 4.16A |
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| YS-60W-12 | YS-100W-12 | YS-120W-12 |
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| YS-150W-24 | YS-200W-24 | YS-250W-24 |
| Model | Input Voltage | Output voltage | Max Power | 12V Rated Current | 24V Rated Current | Size |
| YS-36 | AC180-265V | DC12V/DC24V | 36W | 3A | 1.5A | 380*255*185mm |
| YS-60 | AC180-265V | DC12V/DC24V | 60W | 5A | 2.5A | 380*255*185mm |
| YS-100 | AC180-265V | DC12V/DC24V | 100W | 8.3A | 4.16A | 380*255*165mm |
| YS-120 | AC180-265V | DC12V/DC24V | 120W | 10A | 5A | 380*255*165mm |
| YS-150 | AC180-265V | DC12V/DC24V | 150W | 12.5A | 6.25A | 380*255*165mm |
| YS-200 | AC180-265V | DC12V/DC24V | 200W | 16.6A | 8.3A | 380*255*165mm |
| YS-300 | AC180-265V | DC12V/DC24V | 300W | 25A | 12.5A | 380*255*165mm |
| YS-350 | AC180-265V | DC12V/DC24V | 350W | 29A | 14.6A | 380*255*165mm |
Mains Dimmable Drivers
Mains dimmable drivers are LED power supplies with integrated dimming capability, allowing LED strip brightness to be adjusted from full output down to low levels. Both waterproof and non-waterproof options are available to suit different environments. With a wide selectable power range, these drivers meet the demands of diverse industry applications and are well suited for any led strip and power supply setup where brightness control is required.
IP20 Dimmer Power Supply
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| JP-DC12V-36W | 100W SCR, 0-10V 2-in-1 Dimming Power Supply | DALI Constant Voltage Dimming Power Supply |
| Name | Model | Input Voltage | Output voltage | Max Power | 24V Rated Current | Size |
| 0-10V Dimmable Driver Power Supply | LMSDIM-CVT-24060 | AC200-240V | DC24V | 60W | 1.5A | 150*43*25mm |
| 100W SCR, 0-10V 2-in-1 Dimming Power Supply | LMSDIM-CVT-24100 | AC200-240V | DC24V | 100W | 4.16A | 194*50*30mm |
| DALI Constant Voltage Dimming Power Supply | LMSDIM-CVT-24300 | AC200-240V | DC24V | 300W | 12.5A | 288*50*30mm |
Slim Non-Dimmable Drivers
Slim non-dimmable drivers feature an elongated, low-profile form factor designed for installations where space is limited. Without dimming functionality, they deliver a constant current output to keep LED strips running stably. Their ultra-thin design makes them particularly well suited for recessed ceiling lights, panel lights, and other applications where the led tape driver needs to be concealed. Good thermal management ensures reliable performance across a range of commercial and residential lighting projects.
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| Slim Drivers 24W | Slim Drivers 36W | Slim Drivers 72W |
| Model | Input Voltage | Output Voltage | Max Power | 12V Rated Current | 24V Rated Current |
| Slim Drivers 24W | AC180-265V | DC12V/DC24V | 24W | 2A | 1A |
| Slim Drivers 36W | AC180-265V | DC12V/DC24V | 36W | 3A | 1.5A |
| Slim Drivers 48W | AC180-265V | DC12V/DC24V | 48W | 4A | 2A |
| Slim Drivers 60W | AC180-265V | DC12V/DC24V | 60W | 5A | 2.5A |
| Slim Drivers 72W | AC180-265V | DC12V/DC24V | 72W | 6A | 3A |
Adaptor Drivers
The adaptor driver is a commonly used led strip adapter, designed to convert mains AC power into 5V, 12V, or 24V DC output. Typically rated at around 60W, it is well suited for low-power LED applications — particularly in ambient and decorative lighting. Its compact, lightweight plastic housing makes installation straightforward, and it is especially convenient when used as part of an LED strip kit, streamlining the overall setup process.
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| 18W | 36W | 72W |
| Model | Input Voltage | Output Voltage | Max Power | Rated Current | Enclosure Size | Wire length |
| British Standard Adapter | AC100-240V | DC5V/DC12V/DC24V | 18W | 5V 3.6A,12V 1.5A | 58*38*28mm | DC header cable length 1.5M |
| European Standard Adapter | AC100-240V | DC12V/DC24V | 36W | 12V 3A,24V 1.5A | 75*43*31mm | DC header cable length 1.5M |
| American Standard Adapter | AC100-240V | DC12V/DC24V | 72W | 12V 6A,24V 3A | 108*50*33mm | DC header cable length 1.5M |
How to choose the right power supply？
(1) Identify the Strip Type and Quantity
Start by determining the type of LED strip that suits your project — whether that's 2835 SMD, 5050 SMD, or COB strip. From there, select the appropriate LED density (60 LEDs/m, 120 LEDs/m, or 320 LEDs/m), confirm the input voltage (5V, 12V, or 24V), and establish how
many strips will be needed for the project or room. With these parameters in place, you can define the target lighting output and move forward with confidence.
(2) Calculate the Required Power
Once you have the LED type, strip density, voltage, and quantity confirmed, you can calculate the total power demand for the area — and from there, determine the appropriate driver size.
For example, if a room uses 5 metres of 5050 SMD strip at 60 LEDs/m, with a rated power of 12W per metre, a 20% headroom buffer should be applied to ensure the led strip power source operates within a safe working range:
12W × 5 × 1.2 = 72W
(3) Consider the Installation Location
Where the strip will be installed has a direct bearing on both the protection rating and the physical size of the led strip and power supply selected.
For damp environments or outdoor use, a waterproof-rated driver is recommended. For dry indoor installations, a standard non-waterproof unit is sufficient. Installation space is also a practical consideration — if the mounting location cannot accommodate a single high-wattage
driver, two lower-wattage units can be positioned at separate points along the run, simply by adjusting the installation layout.
For ambient lighting applications, where only a small number of strips are connected and plug-in convenience is a priority, a compact led strip adapter with an integrated plug is generally the most practical choice.
(4) How to Connect LED Driver/Transformer to Flexible LED strip
Select the Appropriate Plug
Choose the correct plug type based on the destination country — whether that's a European standard (CEE 7) or US standard (NEMA) plug — and connect it to the input terminal of the driver.
Connect the LED Strip to the Output Terminal
Attach the LED strip to the output terminal of the led tape driver, connecting the red wire to the positive terminal and the black wire to the negative terminal. Ensure all screws are firmly tightened, and that the connections are securely seated without any cable twisting.
REQUEST A QUOTE
In LED lighting system, power supplies and drivers are far more than just electrical components — they are the determining factors behind system stability, service life, and overall performance. Whether the application calls for a constant-voltage or constant-current solution, the key lies in achieving a precise match with the specific use case, strip specifications, and installation structure.
Selecting the right led strip and power supply configuration can effectively reduce failure rates, lower maintenance costs, and ensure long-term reliable operation — particularly critical in engineering-grade projects.
If you are planning a lighting project or encountering compatibility challenges during the selection process, a thorough system evaluation is strongly recommended from the outset — covering key factors such as power calculation, wiring layout, and installation environment.
Looking for expert guidance or a tailored solution? Contact our technical team. We can provide matched led driver for led strip recommendations based on your specific project requirements, helping you achieve a more efficient and stable lighting system from design through to installation.
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