Industry Trends
In recent years, driven by the explosive growth of new energy vehicles, the advancement of intelligent driving technology, and the widespread adoption of connected vehicles, the global automotive electronics testing industry has surged from US$8.5 billion in 2019 to US$13 billion in 2024, demonstrating steady growth. By 2028, the global automotive electronics testing industry is projected to reach US$21.5 billion.
Application Demand
The rapid development of the automotive electronics testing industry has driven a sharp increase in demand for DC power supplies for automotive electronics testing. However, with the continuous improvement of testing standards, traditional DC power supplies face numerous technical challenges in automotive electronics testing and are no longer able to meet testing needs.
Testing Difficulties
1. Dynamic Response Capability
Automotive electronic components (such as ECUs, sensors, and motor drivers) require rapid current changes during startup and sudden load changes. Traditional power supplies, due to their limited loop bandwidth, cannot keep up with these changes, resulting in distorted test results.
2. Voltage and Current Accuracy and Ripple Interference
Automotive electronics testing requires mV/mA-level accuracy and ripple interference of less than 100mV when operating in low-current standby mode or powering high-precision sensors. Traditional test power supplies struggle to achieve this, resulting in inaccurate test results.
3. Complex Operating Condition Simulation Capability
Traditional DC power supplies cannot accurately simulate the complex voltage, current, and transient changes encountered by automotive electronics in real-world operation.
4. Protection Functionality
Traditional power supply protection circuits have slow response times and are unable to protect the product under test. When testing motor or battery-related modules, energy regenerative braking can easily cause overvoltage damage to the power supply itself.
Solution
To address the testing difficulties in the automotive electronics industry, Ainuo Instruments has recently developed the AN56 series, a bidirectional programmable DC power supply. It features high power factor, fast dynamic response, and low output ripple, fully meeting the needs of automotive electronics testing.
1. Fast Dynamic Response
The voltage rises from 10% to 90% in ≤ 30ms, transient response time is ≤ 1ms, and forward and reverse switching takes only 2ms, enabling timely response to various emergencies during automotive electronic component testing.
2. High Output Accuracy, Low Ripple
Voltage output accuracy is 0.02% + 0.03% F.S., current output accuracy is 0.05% + 0.05% F.S., resolution is 1mV/1mA, and maximum ripple noise is 10mVrms (10V model).
3. Complex Operating Condition Simulation
Pre-programmed waveforms, including standard waveforms for load dump and voltage sag from standards such as LV123, LV148, DIN40839, ISO-16750-2, and LV124, simulate various emergencies that may occur during automotive electronics operation.
4. Bidirectional Energy Flow and Circuit Protection
This power supply can function as both a source and a sink, enabling bidirectional energy flow (two-quadrant operation). Built-in short-circuit and overtemperature protection instantly shuts off output, protecting both the power supply and the device under test.
Product Features
The AN56 series bidirectional programmable DC power supply utilizes active power factor correction technology and high-frequency LLC multi-resonant soft-switching inverter technology. It offers outstanding performance with a wide output range of constant power, along with advantages such as compact size, light weight, low noise, high efficiency, and simple operation. Grid Feedback Function: It combines both power supply and load characteristics, delivering DC power supply performance while also automatically feeding energy back into the grid.
l Wide output range: up to three times that of a "matrix" power supply of the same power rating.
l High power density: 1U tall, it can be installed in a standard 19-inch cabinet. Maximum power per unit: 6 kW.
l Active power factor correction technology ensures a full-load power factor exceeding 0.99.
l High-frequency LLC multi-resonance technology achieves an overall efficiency of up to 0.93.
l Three operating modes: constant voltage, constant current, and constant power, meeting diverse testing requirements.
l Built-in precise voltage and current measurement ensures excellent output stability.
l High-brightness color LCD touchscreen for an attractive appearance and simple, intuitive operation.
l Parallel output capability facilitates capacity expansion.
Conclusion
The AN56 low-power bidirectional DC power supply, with its high dynamic performance, bidirectional energy exchange capabilities, and intelligent test integration, has become an indispensable key device in modern automotive electronics testing. It not only addresses the current pain points of automotive electronics testing, but its open architecture and performance margin make it a fundamental tool supporting next-generation automotive electronics innovation. Amidst the rapid technological evolution of the industry, power supply equipment with bidirectional dynamic testing capabilities has evolved from an "optional accessory" to a "strategic necessity," directly impacting the core competitiveness of automakers and parts suppliers.
