Exhibition Date: July 23–25, 2025
Venue: Tokyo International Exhibition Center (Big Sight)

The three-day professional exhibition focused on mechatronics integration, electronics, power systems, and EMC technologies, making it one of Asia’s most representative advanced technology platforms.

TECHNO-FRONTIER 2025 concluded successfully. At this event, MICROTEST engaged with numerous automotive engineers to discuss the design and technology of high-power automotive inductors. Particularly in EV drive systems and onboard power applications, the saturation current and temperature rise behavior of inductors under high-current conditions directly affect system efficiency, thermal management, and reliability. Automotive engineers emphasized that in high-power applications, the verification of saturation current and temperature rise current is critical. Exceeding the inductor’s saturation current can sharply reduce inductance, causing current waveform distortion and resonance failure, potentially overloading inverters and power modules, and even triggering electronic control system malfunctions. Temperature rise current represents the inductor’s thermal endurance under prolonged operation, assessing its reliability and lifespan. Long-term operation under high current can generate excessive heat, accelerating insulation aging and degrading magnetic material performance, potentially causing thermal failure of power components, ultimately compromising the stability and longevity of the vehicle’s power system.

At the exhibition, MICROTEST showcased its high-power inductor saturation/temperature rise current test solution, combining an Impedance Analyzer with a DC Bias Current Source. This is the industry’s only system supporting up to 640A DC Bias Current with a frequency response of 100Hz–10MHz, enabling precise analysis of inductor saturation and temperature rise currents. Engineers can evaluate the maximum operating frequency and perform detailed curve scanning for saturation and temperature rise behavior.

MICROTEST also presented its latest high-precision Power Analyzer 7140, featuring 100th-order harmonic analysis with ±0.05% measurement accuracy. The instrument uniquely supports band-pass and high-pass filter visualization, allowing engineers to directly observe signals in specific frequency bands. This function is particularly useful for analyzing switched-mode power supply designs. In AI server applications, high-performance switching power supplies often involve high-speed switching and high-frequency noise, which are difficult to analyze with traditional power measurement tools. The 7140’s high-pass filters remove low-frequency components, enabling engineers to focus on target high-frequency signals and identify which frequency bands most impact power quality and system stability.

MICROTEST will continue to focus on delivering precise, comprehensive test solutions, assisting automotive power, AI, and renewable energy customers in establishing new standards for high-power and high-frequency component verification in the future.