What is a high flux core?
The high flux core has a uniform distributed air gap consisting of 50% nickel and 50% iron alloy powder with the highest bias performance among all powder core materials.
Which applications are best suited for high flux cores?
High flux cores are ideal for energy storage filter inductors in switching power supplies. A 15,000 Gaussian high flux core provides a higher energy storage capacity than a gap-sized ferrite or iron powder core of the same size and permeability.
The use of high flux cores in high current inductors can significantly reduce inductor size and cost.
High-flux cores are well-suited for use in noise-filtered inductors that must pass large AC voltages without generating saturation.
The use of a high flux core reduces the size of the inline filter because fewer turns are required than using iron powder cores or ferrites.
The high flux core has a very low residual flux density. Combined with its saturation flux density of up to 15,000 Gauss, this large ΔB makes high flux ideal for power factor correction circuits as well as unidirectional drive applications such as flyback transformers and pulse transformers.
What are the advantages of high flux cores?
High saturation (1.5 T)
Core loss is lower than iron powder core and silicon steel
Lower cost than molybdenum permalloy
Excellent DC offset
High Curie temperature
Stable temperature performance
Suitable for small size designs
What is soft saturation?
Soft saturation is an advantage of distributing air gap materials compared to ferrite. Its DC bias curve does not have the traditional saturation point of ferrite, but its magnetic permeability decreases slowly in the expected manner as the excitation power increases.