The core advantages of the PQ-type flat-wire differential-mode inductor lie in low loss, high current handling capability, and miniaturization. In addition, its manufacturing process is relatively simpler compared to traditional round-wire solutions, making it an ideal filtering component for power supply designs that pursue high power density and high efficiency.
High-Efficiency Flat-wire Differential-mode Choke For Advanced Power Systems
Combining the advantages of low loss, high current capacity, and miniaturization, along with a simplified manufacturing process, it is an ideal filtering component for high-power-density power supply designs.
Key Features
Low Loss: Flat-wire winding significantly reduces both DC resistance (DCR) and AC resistance (ACR), minimizing heat generation and improving overall energy efficiency.
High Current Carrying Capacity: The flat-wire structure provides excellent high saturation current characteristics, with saturation current reaching above 100A, making it suitable for high-power-density applications.
Miniaturization: With the same number of turns, flat-wire windings occupy much less volume than traditional round-wire windings, contributing to smaller core size, lighter weight, and higher power output.
Simplified Manufacturing Process: The coil can be wound separately and then assembled with the core. The winding process is simpler compared to round wire, especially for thick wire gauges.
DC-Dias| Electric Current (A) | Inductance uH |
| 0 | 3.2 |
| 10 | 3.2 |
| 20 | 3.2 |
| 30 | 3.2 |
| 40 | 3.2 |
| 50 | 3.1 |
| 60 | 3.1 |
| 70 | 3.1 |
| 80 | 3.0 |
| 90 | 2.8 |
| 100 | 2.5 |
Winding Specification
| Winding | Terminal | Wire Specification | Turns | Remarks |
| N1 | 1-2 | QZY-2/180 2*7 | 4TS | Reference turns |
Material
| Item Name | Specification |
| Enamelled Wire | QZY-2/180 2*7 |
| Magnetic Core | PQ3521/PC40 |
| Base | 31*21/T375HF/ Black |
| Epoxy glue | 6065H |
| Solder / Solder Tin | Sn99.3Cu0.7 |
Electrical Parameters
| Inductance #1 | 3uH Min(10KHz/1V ) |
| Inductance #2 |
2.5uH Min(10KHz/1V/80A ) |
| DC Resistance (DCR) | 0.5 mΩ Max |
| Insulation Dielectric Voltage (Hi-pot) | 1.8KVac 2mA-3S |
| Insulation Resistance (IR) | 100MΩ Min(DC500V) |
Target Applications
Power Conversion: DC/DC converters, switching power supplies.
Automotive Electronics: Automotive power conversion, compliant with AEC-Q200 standard.
High-Current Scenarios: High-current Point-of-Load (PoL) power supplies.
New Energy & Industrial: New energy electronics, industrial control, and other related fields.
Proven Industry Expertise: With over 20 years of industrial experience and a solid foundation established in 2013, we operate five major core industrial lines across multiple specialized manufacturing bases to ensure top-tier product scale and stability.
Global Quality Certifications: Our facilities strictly adhere to international automotive and industrial standards, backed by a complete set of major credentials including IATF16949, ISO9001, ISO14001, ISO45001, and ISO50001.
Strong R&D & Technical Innovation: Driven by dedicated research teams and specialized new-design laboratories, we possess extensive patent portfolios and advanced testing capabilities to provide highly reliable, customized magnetic solutions.
Smart & Scalable Manufacturing: We leverage advanced ERP and MES-managed smart manufacturing systems to optimize production capacity, securing a highly dependable supply chain for international clients across the EU, US, and globally.
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