Editorial Technical Reference

LED Driver

This page explains how LED Driver is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic power supply that regulates and controls electrical current to LED lighting components

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for LED Driver

Definition
An LED driver is an electronic power supply that regulates and controls the electrical current supplied to LED lighting components. It converts incoming AC or DC power to the specific voltage and current required by LED arrays, ensuring stable operation, preventing thermal runaway, and enabling dimming and control functions. As a critical component within LED illumination systems, it serves as the interface between the power source and the LED light source, managing electrical characteristics for optimal performance and longevity.

LED drivers operate by converting input power, typically AC mains voltage, to a constant current or constant voltage output suitable for LEDs. They use switching regulator circuits such as buck, boost, or flyback converters to efficiently step down voltage while maintaining precise current regulation. Advanced drivers incorporate pulse width modulation (PWM) for dimming control, power factor correction (PFC) for efficiency, and protection circuits against over-voltage, over-current, and thermal overload.

Typical parameters for LED drivers in this directory include an input voltage range of 100–277 V AC, output power from 15 to 60 W, output current from 350 to 1050 mA, and output voltage range of 9–42 V DC. Efficiency ranges from 85% to 92%, power factor from 0.9 to 0.99 (per IEC 61000-3-2), total harmonic distortion ≤20% (per IEC 61000-3-2), operating temperature from -40°C to 85°C, IP rating from IP20 to IP67 (per IEC 60529), isolation voltage of 3750 V AC (per IEC 61347), dimming range of 1–100% (0-10V or PWM), dimensions from 100 to 200 mm, and weight from 150 to 500 g. These values are reference ranges; verify model-specific specifications with the legal manufacturer or supplier.
Working Principle
LED drivers convert input AC or DC power to a regulated constant current or constant voltage output suitable for LEDs. They employ switching regulator topologies such as buck, boost, or flyback converters to efficiently step down voltage while maintaining precise current regulation. Advanced drivers incorporate PWM for dimming, power factor correction for efficiency, and protection circuits against over-voltage, over-current, and thermal overload. The driver continuously monitors output and adjusts switching to keep LEDs within safe operating limits.
Common Materials
Printed Circuit Board (PCB), Semiconductors (MOSFETs, ICs), Magnetic components (inductors, transformers), Capacitors, Heat sinks
Technical Parameters
ParameterTypical rangeNotes & selection driver
Input Voltage Range100–277 V ACUniversal input for global markets
Output Power15–60 WMatches LED module wattage
Output Current350–1050 mAConstant current for LED stability
Output Voltage Range9–42 V DCCompatible with typical LED forward voltage
Efficiency85–92 %Higher efficiency reduces heat and energy cost
Power Factor0.9–0.99Required for commercial lightingIEC 61000-3-2
Total Harmonic Distortion≤20 %Lower THD for grid complianceIEC 61000-3-2
Operating Temperature-40–85 °CCase temperature range
IP RatingIP20–IP67IP67 for outdoor/damp locationsIEC 60529
Isolation Voltage3750 V ACInput to output isolationIEC 61347
Dimming Range1–100 %0-10V or PWM dimming
Dimensions100–200 mmLength range for typical models
Weight150–500 gDepends on power and enclosure

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Rectifier Circuit Part
    Converts AC input to DC for internal processing
    Material: Semiconductor diodes
  • Switching Controller IC Part
    Regulates switching frequency and controls power conversion
    Material: Integrated circuit
  • Power Transformer/Inductor
    Steps voltage up/down and stores energy during switching cycles
    Material: Ferrite core with copper windings
  • Output Filter Capacitors Part
    Smooths output voltage/current and reduces ripple
    Material: Electrolytic or ceramic capacitors
  • Thermal Management System
    Dissipates heat from power components to prevent overheating
    Material: Aluminum heat sink with thermal interface material
  • Power Factor Correction Circuit Optional
    Shapes the input current to raise power factor, on drivers that include it.
  • Protection Circuit Optional
    Shuts the output down on over-voltage, over-current or thermal overload.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric (non-pressurized enclosure)
other spec: Input Voltage Range: 90-305V AC, Output Current Range: 350-2000mA DC, IP Rating: IP65/IP67 for outdoor/industrial use
temperature: -40°C to +85°C (operating), -40°C to +105°C (storage)
Media Compatibility
✓ Indoor commercial lighting (offices, retail) ✓ Outdoor architectural lighting (facades, landscapes) ✓ Industrial high-bay/HID replacement fixtures
Unsuitable: Submerged/underwater applications without proper IP68+ sealing
Sizing Data Required
  • Total LED forward voltage (Vf) sum
  • Required LED drive current (mA)
  • Maximum ambient temperature at installation location

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrolytic capacitor degradation
Cause: High operating temperatures causing electrolyte evaporation, voltage stress, or poor capacitor quality leading to reduced capacitance and increased ESR
MOSFET/transistor thermal failure
Cause: Inadequate heat dissipation, overcurrent conditions, or poor thermal design causing semiconductor junction overheating and breakdown
Maintenance Indicators
  • Flickering or intermittent LED illumination indicating unstable output
  • Audible buzzing or humming from the driver housing suggesting component vibration or transformer issues
Engineering Tips
  • Ensure proper thermal management with adequate ventilation and heatsinking to keep internal components below 85°C
  • Maintain stable input voltage within manufacturer specifications and implement surge protection to prevent electrical stress

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61347-2-13:2014 (LED driver safety) EN 55015:2019 (EMC for lighting equipment) UL 8750 (LED equipment safety)

Quoted from the published standard.

Manufacturing Precision
  • Output current regulation: +/-5%
  • Power factor: >0.9 at full load
Quality Inspection
  • High-potential (hipot) insulation test
  • Thermal cycling endurance test

Manufacturers of LED Driver

11 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

ETEK Microelectronics
Jiangsu, CN
ISO 26262
Listed on the company's own website · profile compiled by CNFX from public sources
Chipown Semiconductor
年在科创板上, Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Cincon Electronics
Taiwan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Greenriy Technology Co., Ltd
Zhongshan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Guangdong QINX Technology Co., Ltd.
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
HEBAI
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
MEAN WELL
Guangzhou, Guangdong, CN
Also makes: Assembly Robot, Feed Box, DC-DC Converter and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Rugao Lian Tuo Electronics Co.,Ltd
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Belling Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Silergy
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Zhejiang Klite Lighting
Zhejiang, CN
Also makes: LED Lighting System
Listed on the company's own website · profile compiled by CNFX from public sources
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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary function of an LED driver?

An LED driver regulates the electrical current and voltage supplied to LED lighting components, ensuring stable operation and preventing thermal runaway. It converts incoming AC or DC power to the specific requirements of the LED array.

What are typical input and output specifications?

Typical input voltage range is 100–277 V AC, output power 15–60 W, output current 350–1050 mA, and output voltage 9–42 V DC. These are reference ranges; confirm exact values for your model with the manufacturer.

What standards are referenced for this component?

Referenced standards include IEC 61000-3-2 for power factor and harmonic distortion, IEC 60529 for IP rating, and IEC 61347 for isolation voltage. These are verification references, not proof of certification.

How does dimming work with LED drivers?

Dimming is achieved via 0-10V or PWM control, with a dimming range of 1–100%. The driver adjusts output current or voltage accordingly. Verify compatibility with your LED module and control system.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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