Hero Section: The Solution

Headline:

Custom PQ Core Transformers: Maximum Power Density & Low EMI

Sub-headline:

Engineered for high-efficiency switching power supplies. As a specialized Custom Transformer Manufacturer, we deliver PQ Core Transformers (e.g., PQ32, PQ50) that offer a superior volume-to-performance ratio and natural magnetic shielding compared to standard EE cores.

Key Highlights:

High Power Density: The optimized round center leg of the PQ core reduces wire length and copper loss, allowing for higher power handling in a smaller footprint.

Low EMI Radiation: The side limbs of the PQ core provide effective magnetic shielding, making it an ideal SMPS Transformer for noise-sensitive medical and telecom applications.

Efficiency Focus: Designed to minimize core and copper losses, perfect for high-efficiency topologies like LLC Resonant converters.

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Reference Case Study: Model PTX00PQ50-400K

Note: The specifications below are from our production model PTX00PQ50-400K. This demonstrates our capability in manufacturing High-Power PQ Transformers.

Parameter	Specification (Reference Only)	Customization Range
Model P/N	PTX00PQ50-400K	Custom P/N assignment available
Category	High-frequency transformer	LLC Transformer / Main Power Trafo
Core Shape	PQ50 (Vertical 6+6 Pin)	PQ20, PQ26, PQ32, PQ40, PQ50
Dimensions	53.5 x 46.0 x 54.0 mm (Max)	Scalable based on power needs
Inductance (L)	400 µH ± 10% (@1kHz/0.3V)	10µH - 5.0mH (Optimized for LLC)
DCR (Resistance)	30 mΩ Max	Ultra-low DCR with Litz Wire
Wire Specs	Litz Wire (0.1mm x 60) (Ref)	TIW / Litz / Flat Wire
Operating Freq	20kHz - 500kHz	Optimized for GaN/SiC Switching

Engineer's Insight: The PTX00PQ50 is a powerhouse. Using the large PQ50 core allows us to handle high power (often 500W - 2kW+) while maintaining a compact profile. The shielded geometry and use of Litz Wire make it exceptionally efficient for resonant switching applications.

Tailor This Transformer to Your Needs

Why choose a PQ Core Transformer for your custom design?

PQ Core vs. EE Core

● Copper Loss: The PQ core's round center leg minimizes the winding turn length. Less wire means lower resistance (DCR) and reduced copper loss compared to the rectangular leg of an EE core.

● Shielding: The PQ shape offers better magnetic shielding than open EE cores, reducing EMI filter requirements.

● Application: While EE cores are versatile, PQ Transformers are the premium choice for High Efficiency Power Supplies (80 Plus Gold/Platinum/Titanium standards).

Customization for LLC & Resonant

● Leakage Inductance: For LLC Resonant Transformers, we can intentionally design specific leakage inductance (using sectional winding) to integrate the resonant inductor into the main transformer, saving board space.

● Litz Wire: We utilize multi-strand Litz Wire to combat the "skin effect" at high frequencies (100kHz+), ensuring the transformer runs cool.

Industries We Serve

Typical applications for our PQ Series Transformers.

New Energy Vehicles:

On-board DC-DC converters (OBC) and charging modules.

Telecom Power:

48V Rectifiers and server power supplies requiring high power density.

Medical Equipment:

Low-EMI power supplies for MRI and imaging devices.

Industrial Lighting:

High-power LED drivers and ballast chokes.

Quality Assurance & Testing

Strict verification for High-Efficiency Components.

Inductance Precision: 100% verified to ensure resonant frequency matching.
Leakage Inductance: Measured to control switching characteristics.
Hi-Pot Isolation: Tested at 3000Vac - 4500Vac to guarantee galvanic isolation safety.
Temperature Rise: Verified to ensure Class B/F/H insulation limits are respected.