Introduction
In the rapidly evolving landscape of industrial automation, server power supplies, and New Energy Vehicle (NEV) charging, the demand for high power density ve peak efficiency is paramount. At TrafoPSU, we specialize in providing cutting-edge magnetic components specifically optimized for LLC Resonant Converters. Our solutions span from 500W to 6kW, leveraging advanced PQ core geometries and precision magnetic integration.
Comprehensive PQ/PQI Core Lineup
To meet diverse engineering requirements, we offer a versatile range of ferrite cores, ensuring the perfect balance between thermal performance and compact footprint:
- 500W – 1.2kW (The High-Density Range):
- PQ35 & PQI35: These are the preferred choices for space-constrained server PSUs. The PQI35 (Integrated) structure is designed to master the integration of resonant inductance (Lr) without the need for external components.
- 1.5kW – 3kW (The Industrial Standard):
- PQ40 & PQ50: These cores provide the necessary winding window and surface area to handle high currents while maintaining low temperature rise.
- 3kW – 6kW (High-Power Solutions):
- PQ55 & PQ65: Specifically engineered for high-power industrial chargers and energy storage systems, allowing for heavy-gauge Litz wire or copper foil to handle currents exceeding 200A.
Key Application Advantages
1. Precision Magnetic Integration (Lr Control)
Our integrated transformer design utilizes controllable leakage inductance (4µH – 10µH) to act as the resonant inductor. This Magnetic Integration approach significantly reduces the Bill of Materials (BOM) cost and elevates system reliability by simplifying the PCB layout.
2. Advanced Materials & High Efficiency
By utilizing premium low-loss ferrite materials like DMR95, DMR50 ve PC95, our transformers maintain superior efficiency (over 96%) at typical operating frequencies of 70kHz to 500kHz. These materials are optimized to achieve their lowest core loss in the 80°C – 100°C window, perfect for continuous industrial operation.
3. Optimized EMI & Thermal Management
The PQ geometry offers a superior surface-to-volume ratio, facilitating efficient heat exchange. Coupled with our multi-layer shielding and parasitic capacitance optimization, TrafoPSU components ensure excellent EMI performance and stability.
Technical Specifications Matrix
| Özellik | Specification Range |
| Power Rating | 200W – 800W (PQ35) up to 6kW (PQ65) |
| Input/Output | 300V-800V DC Input / 12V-48V DC Customizable Output |
| Operating Freq. | 70kHz – 500kHz |
| Core Options | PQ35, PQI35, PQ40, PQ50, PQ55, PQ65 |
| Safety Standard | UL/IEC 60950, EN62368 Compliant |
| İzolasyon | Class R (220°C) with Nomex® 410 |
Engineering Support & Customization
We understand that every power system is unique. TrafoPSU provides full-cycle support, including:
- Magnetic Circuit Simulation & FEA Analysis.
- Thermal & Structural Customization for specific airflow or heatsink requirements.
- Rapid Prototyping and small-batch trial production to accelerate your R&D.
Contact Us for Your Next Power Design
Improve your LLC converter’s reliability and power density with TrafoPSU’s professional magnetic solutions. Contact our engineering team for custom samples or technical selection guides.
