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High-Frequency Transformer

Custom Planar Transformer for LLC & CLLC Converters

Planar or flat-conductor winding structures can be reviewed for LLC, CLLC and PSFB converters. Frequency, loss, efficiency, leakage inductance and thermal performance must be confirmed for the approved project design.

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Custom planar flat wire transformer for LLC and CLLC resonant converter review

What this product is used for

Planar or flat-conductor winding structures can be reviewed for LLC, CLLC and PSFB converters. Frequency, loss, efficiency, leakage inductance and thermal performance must be confirmed for the approved project design.

Core Features

Core Features
• Planar structure, ultra-thin design, saves PCB space
• Flat-conductor winding; high-frequency loss is calculated and verified for the approved geometry
• Core material is selected from the project flux, loss, frequency and thermal conditions
• Modular structure available where supported by the mechanical and insulation design
• Controllable leakage inductance, suitable for resonant applications

Project Review Range

Power, frequency and thickness: configured for the converter and mechanical envelope
Efficiency: project target, confirmed on the approved converter and sample
Dielectric withstand: defined by the project safety standard and insulation system
Leakage inductance: controlled to the approved topology requirement
Core material: ferrite or other reviewed material according to loss and flux conditions
Final values: approved drawing and validation record

Engineering Support

ProMagTech reviews turns ratio, magnetizing inductance, leakage target, winding and stack structure, core material, insulation system, cooling method, and mounting constraints against the converter topology and application environment.

Parameters Required for a Useful Review

Converter topology, input and output voltage, power level and switching-frequency range
Turns ratio, magnetizing-inductance target, leakage-inductance target and resonant-tank requirements
RMS and peak winding current, waveform or operating points, and semiconductor switching conditions
Maximum length, width and height, mounting method, PCB or copper-stack constraints
Ambient condition, airflow or cold-plate boundary, and temperature-rise limit
Insulation standard, working voltage, hi-pot requirement, creepage and clearance constraints

Without the converter waveform, insulation boundary and cooling condition, only a preliminary structure review is possible. Final loss, efficiency and temperature rise require an approved sample and converter-level validation.

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