2026-03-10
ProMagTech New Ultra-Thin Planar Transformer Enters Mass Production
After two years of R&D, the new generation planar transformer with only 8mm thickness has officially entered mass production, with power density 40% higher than the previous generation. The product uses self-developed nanocrystalline core materials and advanced flat wire winding technology, achieving higher efficiency and better thermal performance.
Product Features:
• Nanocrystalline core with high saturation flux density and low high-frequency loss
• Flat wire winding process with fill factor over 50%
• Ultra-thin design at only 8mm, saving 40% PCB space
• Reliability test planning can be aligned with project requirements
• Efficiency up to 98%+, suitable for LLC and CLLC resonant topologies
The new product is mainly targeting the EV OBC and DC-DC converter market, significantly improving power density and reducing temperature rise. Samples have passed validation tests from major EV manufacturers including BYD, NIO, and Li Auto, and have received mass production orders.
In terms of production planning, Phase 1 capacity is 50,000 units per month, which will expand to 200,000 units per month after Phase 2. Currently, batch delivery has begun to some customers, with expected sales revenue of 50 million RMB in 2026.
2026-02-18
Exhibiting at electronica China 2026, Booth E3-220
ProMagTech will showcase core products including high-current flat wire inductors and high-frequency transformers at electronica China 2026. Welcome to visit our booth for technical exchange. The exhibition will be held at Shanghai New International Expo Center from March 26-28, booth E3-220.
Exhibition Highlights:
• New generation ultra-thin planar transformer (8mm thick) first public display
• 800V platform magnetic component solutions
• Bidirectional DC-DC inductors for energy storage systems
• Flat wire magnetic components for automotive power applications
• On-site technical consultation and customized solutions
During the exhibition, our engineering team will be available at the booth to answer technical questions and provide customized consulting services. We sincerely invite all old and new customers and industry experts to visit and discuss the development trends and technical innovations.
Multiple technical seminars will also be held during the exhibition. ProMagTech's CTO will deliver a keynote speech titled "Application of Flat Wire Inductors in EV OBC". For appointment inquiries, please contact zyong@promagtech.cn.
2026-01-25
Awarded 2025 Shenzhen Quality Supplier
ProMagTech has been awarded the 2025 Shenzhen Electronic Components Industry Quality Supplier title, thanks to our excellent product quality and comprehensive customer service system.
Selection criteria include:
• Product quality pass rate (≥99.5%)
• Customer satisfaction score (≥95 points)
• On-time delivery rate (≥98%)
• Technical support response speed
• After-sales service quality
We will take this as motivation to continue improving product quality and service levels. In 2025, ProMagTech achieved 35% year-over-year sales growth, with over 200 customers, and products exported to Southeast Asia, Europe, North America and other countries and regions.
In the future, we will continue to increase R&D investment and continuously launch more advanced magnetic component products, contributing to the development of the new energy industry.
2025-12-08
Technical Sharing: Flat Wire Inductors in Automotive OBC
With the continuous upgrade of EV fast-charging requirements, flat wire inductors are increasingly being used in OBC design due to their low DC resistance (DCR reduced by 20-30%) and high saturation current characteristics.
1. Technical advantages of flat wire inductors:
• High fill factor: Flat wire fill factor can reach 45-55%, 20-30% higher than round wire
• Low DCR: DC resistance reduced by 20-30% in the same volume
• Weak skin effect: Lower AC loss at high frequency
• Good thermal conductivity: Larger contact area with core, excellent heat dissipation
• Soft saturation: Inductance decreases more gradually with current
2. OBC inductor design considerations:
• Core selection: Nanocrystalline core recommended, high saturation flux density (Bs≥1.2T)
• Winding process: Use high-strength flat copper wire to ensure reliability
• Thermal design: Consider natural or forced air cooling, control temperature rise within 40K
• EMI design: Proper layout of core and windings to reduce leakage flux
3. AEC-Q200 certification requirements:
• High temperature storage test: 150°C/1000 hours
• Temperature cycling: -55°C to +155°C, 1000 cycles
• Mechanical vibration: 5g random vibration, 20 hours
• Electrical performance: Stable inductance, DCR, saturation current at room and high temperatures
2025-09-15
ProMagTech Successful Exhibition at Shenzhen International Electronics Fair
ProMagTech showcased our latest flat wire inductors, planar transformers and other core products at the 2025 Shenzhen International Electronics Fair, engaging in in-depth exchanges with industry experts and customers from around the world. Over 500 professional visitors came to our booth for consultation.
Exhibition highlights:
• New energy vehicle OBC/DCDC magnetic component solutions
• Bidirectional DC-DC inductors for energy storage systems
• Common mode inductors for solar inverters
• 800V platform dedicated inductors
• Flat wire magnetic components for automotive power applications
This exhibition showcased the company's technical strength and innovation capability. During this period, we established contact with over 30 potential customers, with some entering sample testing and business negotiation stages.
ProMagTech's technical team also participated in multiple technical forums, sharing presentations on "Application of Flat Wire Inductors in Power Converters" and "Magnetic Component Design for Energy Storage Systems", receiving widespread industry acclaim.
2025-06-05
ProMagTech Launches New Automotive-Grade Flat Wire Inductor
ProMagTech officially launches a new generation of automotive-grade flat wire inductor series, designed for demanding automotive power applications, with operating temperature range from -55°C to +155°C, specifically designed for EV powertrain systems and OBC on-board chargers.
Product Features:
• Reliability validation scope should be confirmed before qualification
• Wide temperature range: -55°C to +155°C, meeting automotive environment requirements
• Low DCR design: DCR reduced by over 25% compared to traditional round wire inductors
• High saturation current: Using high-Bs nanocrystalline core with excellent saturation characteristics
• High reliability: Excellent vibration and shock resistance
Reliability test scope and supporting reports should be confirmed for each project before qualification.
This product series has reached cooperation intentions with several major EV manufacturers and Tier 1 suppliers, with batch production expected to begin in the second half of 2025. For product specifications, please contact zyong@promagtech.cn.
