From June 11–13, 2025, the SNEC PV+2025 International Photovoltaic and Energy Storage Exhibition was held at the National Exhibition and Convention Center in Shanghai. Dongguan Mentech Optical & Magnetic Co., Ltd. (“Mentech”) made a strong presence at the event with three major product lines—photovoltaic energy storage, residential energy, and EV charging magnetic solutions.

In the era of energy transformation, efficiency, reliability, and integration have become the core drivers of industry advancement. At this year's exhibition, Mentech impressed industry professionals with its high-performance, wide-frequency, and comprehensive new energy product portfolio, backed by cutting-edge magnetic integration technology. The booth was bustling with visitors eager to explore the company’s latest innovations.

Photovoltaic Energy Series

High Power Density for Large-Scale PV-ESS Systems

Mentech's custom-developed inverter inductors for photovoltaic applications utilize low-loss, high-Bs magnetic cores, delivering high power density, superior saturation performance, and exceptional reliability.

• Performance Breakthrough: Customized inverter inductors with low-loss, high-Bs cores, supporting multi-level insulation at 1500V / 3000V / 4500V, covering a full power range from 2kVA to 500kVA.

• Magnetic Integration Design: Combined common-mode and differential-mode inductors reduce component count, minimize PCB footprint, and lower overall system costs.

• Wide Frequency Support: Operates reliably across an ultra-wide 5k–300kHz range, adaptable to complex working conditions with proven industry reliability.

This integrated design meets the PV-ESS industry's demand for cost reduction, while Mentech's expanding product portfolio continues to fuel significant business growth.

Residential Energy Series

Microinverter Magnetic Components Redefining Home Energy Efficiency

• Core Innovation: POT-type flat magnetic cores with internal air gap precisely control leakage inductance, ensuring resonant inductor accuracy and improved EMC performance.

• Efficiency Boost: Single-core fine-stranded winding reduces high-frequency eddy current losses, achieving over 95% efficiency for LLC and flyback topologies.

• High-Density Integration: Optimized magnetic circuit and resonant inductor design enable stable high-frequency operation (100–500kHz) in the 200–500W power range.

Mentech has been supplying customized microinverter transformers and magnetic components to top-tier industry clients for years, offering stable quality, strong cost advantages, and trusted long-term performance.

EV Charging Magnetic Solutions

Magnetic Integration Driving the Electric Mobility Revolution

With the growing demand for higher power density, smaller size, higher efficiency, and lower heat generation, Mentech's engineering team has optimized both materials and design: selecting premium magnetic materials, using suitable litz wire, and advancing magnetic integration technology.

• Power Range: OBC transformers covering 3.3kW–40kW; DC-DC converters for charging stations exceeding 40kW per unit.

• Dual Integration Paths: Combining physical integration and shared magnetic circuit design to reduce both component count and overall volume, increasing power density of magnetic devices.

• Automotive-Grade Reliability: Fully AEC-Q200 certified for stable operation from -40°C to 150°C. Mentech's CNAS-certified lab independently conducts AEC-Q200 tests.

Over years of collaboration with leading EV industry players, Mentech has developed solutions such as 3.3kW five-in-one, 6.6kW three-in-one, and 22kW three-phase integrated magnetic designs—cementing its leadership in magnetic integration technology.

At SNEC 2025, Mentech's “Power of the Core” drew widespread attention, demonstrating its capacity to drive the global energy transition. From high-insulation 1500V–4500V PV inverter inductors, to microinverter magnetic components exceeding 95% efficiency, to integrated DC-DC solutions surpassing 40kW for EV charging—these three product lines showcase Mentech's unmatched expertise and leadership in magnetic integration solutions.