Transformer lamination thickness calculation

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SUMMARY

The discussion focuses on calculating transformer lamination thickness to minimize eddy current loss at 10 MHz and determining core size to prevent saturation in a 1:1 transformer. It is established that iron cores and laminations are typically unsuitable for high-frequency applications like 10 MHz; instead, ferrite materials are recommended. Users should refer to datasheets from manufacturers such as TDK for specific parameters like Al ("A sub L") numbers and saturation flux information to aid in their calculations.

PREREQUISITES
  • Understanding of transformer design principles
  • Knowledge of ferrite materials and their properties
  • Familiarity with inductance calculations
  • Basic concepts of eddy current loss
NEXT STEPS
  • Research ferrite core specifications and datasheets from manufacturers like TDK
  • Learn about calculating inductance using Al ("A sub L") values
  • Study methods to minimize eddy current loss in high-frequency transformers
  • Explore core saturation calculations for transformers
USEFUL FOR

Electrical engineers, transformer designers, and anyone involved in high-frequency circuit design seeking to optimize transformer performance and reduce losses.

rfequip
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I am trying to figure out the lamination thickness of a transformer to reduce eddy current loss at 10 MHz. I am new to the subject, any help will be appreciated. Also how do I calculate the size of a core to avoid saturation knowing the peak current applied to a 1:1 transformer. Thanks in advance
 
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rfequip said:
I am trying to figure out the lamination thickness of a transformer to reduce eddy current loss at 10 MHz. I am new to the subject, any help will be appreciated. Also how do I calculate the size of a core to avoid saturation knowing the peak current applied to a 1:1 transformer. Thanks in advance
Welcome to the PF.

Iron cores and laminations are generally used at AC mains frequencies (50Hz, 60Hz), not at 10MHz. At 10MHz cores are commonly made of ferrite material.

The datasheets for ferrite cores will give their Al ("A sub L") numbers to help you calculate the inductance you get for different numbers of turns. And saturation flux information will also be given in the datasheets.

See TDK or other manufacturer websites for more information. :smile:
 

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