LED Driver Testing Equipment: Analysis of Standard Compliance and Multi-Parameter Testing Capabilities

Abstract
As the core control component of lighting systems, LED drivers directly determine the lifespan and energy efficiency of LED modules. LED Driver Testing Equipment is a key device to ensure product compliance and reliability. This paper takes the LISUN LS2090 LED Driver Testing Equipment as the research object, systematically expounds its compliance with the standards of GB/T 24825-2009 and IEC 62384:2006, and elaborates on its testing capabilities in core parameters such as input characteristics, output characteristics, start-up characteristics, harmonic analysis, and displacement factor. Combined with actual measurement data, its performance advantages are verified, providing technical references for the R&D, production, and quality inspection of LED drivers.

1. Introduction
With the wide application of LED lighting technology in residential, commercial, and industrial fields, LED drivers, as the “heart component”, are facing strict performance and compliance requirements. The national standard GB/T 24825-2009 Performance Requirements for DC or AC Supplied Electronic Control Gear for LED Modules and the international standard IEC 62384:2006 together form the core technical specifications for LED drivers, which clearly define indicators such as electrical parameter accuracy, energy efficiency level, and harmonic suppression.

As a core tool for verifying standard compliance, the testing accuracy and function coverage of LED Driver Testing Equipment directly affect the reliability of test results. The LS2090 LED Driver Testing Equipment developed by Shanghai LISUN Group has achieved accurate measurement of multi-dimensional parameters through hardware upgrades and software optimization, becoming a representative device that meets the requirements of dual standards. This paper will conduct in-depth analysis from three aspects: standard adaptability, core testing functions, and practical application value.

2. Compliance Adaptation of LS2090 to Core Standards
The GB/T 24825-2009 standard adopts the IEC 62384:2006 standard with modifications, only making adaptive adjustments in aspects such as decimal notation, standard name, and energy efficiency level chapter, while the core technical requirements remain highly consistent. The LISUN LS2090 fully covers the key requirements of the two standards through hardware design and test process optimization.

In terms of test environment control, the LS2090 strictly follows the requirement of “indoor environment with no convective wind at 20℃~27℃” in the standards. Its measurement circuit design meets the instrument characteristic regulations of “the current of the voltage line does not exceed 3% of the nominal current of the LED module, and the voltage drop of the current line does not exceed 2% of the actual voltage”. To meet the power stability requirements, the device achieves a voltage regulation accuracy within ±0.2% by linking with the LSP-500VARC precision pure sine wave AC power supply, complying with the strict requirements of the standards for test power supplies.

It is particularly worth noting that for the newly added “energy efficiency level” chapter in GB/T 24825-2009, the LS2090 optimizes the power measurement accuracy. Its minimum power measurement range of 0.015W can accurately capture the energy efficiency characteristics of low-power LED drivers, providing reliable data support for energy efficiency level evaluation. Moreover, the LS2090-IEC variant can meet the harmonic emission requirements of extended standards such as EN/IEC 61000-3-2:2019 through customized software upgrades, further expanding the coverage of compliance.

3. Core Testing Parameters and Technical Implementation of LS2090
The LISUN LS2090 LED Driver Testing Equipment realizes full coverage of five categories of parameters, including input characteristics, output characteristics, start-up characteristics, harmonic analysis, and displacement factor, through a modular design. Its testing capabilities and technical indicators have reached the advanced level in the industry.

3.1 Input Characteristic Parameter Testing (AC & DC)
This module can simultaneously meet the testing needs of AC and DC input LED drivers. In terms of AC input testing, the device covers a fundamental frequency range of 45Hz~65Hz, with a voltage measurement range of 3~300V (crest factor CF=1.670) and a current measurement range of 5mA~2.7A (CF=3). It can accurately capture the voltage fluctuation, current stability, and power loss characteristics of AC LED drivers with different power levels. Its power factor measurement accuracy covers the full range of 0.000~+1.000, which can meet the standards’ requirements for evaluating the power factor of non-linear loads.

The DC input testing is targeted at special scenarios such as battery power supply. It expands the voltage measurement range to 3~500V, increases the maximum current measurement to 8A, and the power measurement range can reach 0.015~4kW, which is suitable for the performance testing of industrial-grade high-power DC LED drivers. Both types of input testing have a data acquisition capability with a bandwidth of 1MHz, which can effectively filter out external electromagnetic interference and ensure the stability of measurement data.

3.2 Output Characteristic Parameter Testing (AC & DC)
The output characteristic testing directly reflects the power supply quality of the LED driver to the LED module. For AC output LED drivers, the device can measure the voltage of 3~300V, current of 5mA~2.7A, and power of 0.015~800W, focusing on evaluating the distortion degree and stability of the output waveform. The DC output testing module adds the ripple current analysis function. Within the voltage range of 3~500V and current range of 5mA~8A, it can accurately measure the ripple component of 5mA~2.5A.

As a key factor affecting the lifespan of LEDs, the measurement accuracy of ripple current is directly related to the effectiveness of the test. The LS2090 can separate the fundamental wave and ripple components through a dedicated filter circuit and waveform analysis algorithm, realizing the accurate calculation of the ripple coefficient, which fully complies with the testing requirements for output stability in IEC 62384.

3.3 Output Start-Up Characteristic Parameter Testing (DC)
The start-up process of the LED driver directly affects the instantaneous impact resistance of the module. The start-up characteristic testing module of the LS2090 can record the dynamic change curves of DC output voltage and current within the critical period of 0~2 seconds at a high-frequency sampling rate, with a voltage measurement range of 3~500V and a current coverage of 5mA~8A. Through this test, hidden dangers such as start-up overshoot voltage and inrush current can be effectively identified, helping R&D personnel optimize the soft-start design of the driver circuit.

3.4 Harmonic Testing and Displacement Factor (DF) Testing
Harmonic suppression is a key indicator that LED drivers must meet after being connected to the power grid. The LS2090 can realize comprehensive analysis of 0~50th harmonic components, including the accurate calculation of harmonic amplitude, phase angle, and total harmonic distortion (THD). Compared with the previous generation product, it increases the number of harmonic analysis from 39 to 50, which can more accurately capture the interference impact of high-order harmonics on the power grid.
The displacement factor (DF), as a core parameter for evaluating the phase difference between voltage and current, is an important upgrade point of the LS2090. This parameter directly reflects the reactive power loss of the LED driver. The device can realize the quantitative analysis of reactive power components through a high-precision phase difference measurement circuit, providing data support for the optimization of the power factor of the power supply. This function is a significant advantage compared with similar products such as WT2080.

4. Actual Measurement Data and Performance Verification
To verify the actual testing capability of the LISUN LS2090 LED Driver Testing Equipment, an LED driver of a certain brand with 100W DC output was selected as the Device Under Test (DUT), and multi-parameter testing was conducted in a standard test environment. The results are shown in the following table:

Test Item	Test Range	Measured Value	Standard Requirement	Compliance
AC Input Voltage	3~300V	220.5V	220V±10%	Compliant
AC Input Power	0.015~800W	105.2W	–	–
Input Power Factor	0.000~+1.000	0.982	≥0.90	Compliant
DC Output Voltage	3~500V	48.2V	48V±5%	Compliant
DC Output Current	5mA~8A	2.08A	2.0A±5%	Compliant
Output Ripple Current	5mA~2.5A	12.3mA	≤50mA	Compliant
Start-Up Overshoot Voltage	3~500V	50.1V	≤110% of Rated Voltage	Compliant
Total Harmonic Distortion (THD)	0~50th Order	8.2%	≤20%	Compliant
Displacement Factor (DF)	0.000~+1.000	0.978	≥0.90	Compliant

Note: The test conditions are an ambient temperature of 25℃, a power supply voltage of 220V/50Hz, and the load is an M9822 DC electronic load (simulating the characteristics of the LED module).

It can be seen from the actual measurement results that the LS2090 has stable measurement data for various parameters, and all indicators comply with the requirements of GB/T 24825-2009 and IEC 62384:2006. The measured values of key indicators such as ripple current and harmonic distortion are far better than the standard limits, which fully reflects the high-precision testing capability of the device. At the same time, the supporting software can automatically generate test reports including data tables and change curves, greatly improving the efficiency of inspection.

5. System Integration and Application Scenarios
The LISUN LS2090 is not an isolated testing device, but maximizes its testing capabilities through system integration. The device can be linked with the LSP-500VARC precision AC power supply to provide adjustable and stable power input. Combined with the M9822 DC electronic load, it can simulate the characteristics of LED modules with different power levels, constructing a full-chain test environment from power supply to load, and perfectly reproducing the actual working scenario of the LED driver.

In terms of software support, its supporting Chinese and English operating systems are compatible with the full range of desktop systems from Windows 7 to Windows 11, with functions such as real-time data visualization, historical trend analysis, and standard format report generation, meeting the operating habits and data management needs of different users. This integrated hardware and software design enables the LS2090 to play a core role in multiple scenarios:

In the industrial quality control link, the device can realize rapid detection of batch LED drivers, and automatically determine product qualification through preset standard thresholds, greatly improving the efficiency of production quality inspection. In the R&D field, its high-precision start-up characteristic and harmonic analysis functions can provide data support for the optimization of power circuits. In compliance certification testing, the LS2090-IEC variant can directly meet the requirements of multi-national standards, helping products enter the international market quickly.

6. Conclusions 
The LISUN LS2090 LED Driver Testing Equipment has become a benchmark device in the field of LED driver testing due to its accurate parameter measurement capabilities and comprehensive standard adaptability. Its in-depth alignment with the GB/T 24825-2009 and IEC 62384:2006 standards ensures the authority of test results. The full-parameter testing capabilities covering AC/DC input and output, start-up characteristics, harmonics, and displacement factors meet the testing needs of different scenarios. The system integration and software intelligence design further enhance the practical value of the device.

Tags：LS2090