XP Inductors And Transformer

With the development of the industry, switching power supply power is rising, the operating frequency of 20kHz or more, the output power of more than 30kW toroidal transformers such as the use of traditional ferrite materials, processing more difficult, batch consistency and temperature stability will be a problem, and the transformer volume Large, can not meet the high-frequency power and miniaturization of the development needs. Fe-based nanocrystalline soft magnetic material prepared by rapid solidification technology is characterized by high saturation magnetic induction, high permeability, low loss, good temperature stability, short processing cycle, environmental protection, batch consistency and temperature stability. And a series of advantages in high-power high-frequency power transformer on the application of great value. After years of development, nanocrystalline soft magnetic materials have been in the inverter welding power, current transformers, switching power supply, electromagnetic compatibility devices have been widely used.

At present, the thickness of Fe-based nanocrystalline soft magnetic material is about 30μm, and the material is brittle and brittle because of the nanocrystalline material. It is very sensitive to stress. In the process of using, Can be greatly deteriorated, so the application will generally be made around the ring or horseshoe shape, and into the protective box. This structure has a single shape, the core window utilization is low, the working temperature of the device affected by the protection box material, poor heat dissipation, transformer leakage inductance, easy to produce noise, these problems led to the limitations of its application can not be applied to large Power high-frequency transformers, can not be used to manufacture complex shape of the transformer.

The new nanocrystalline power SMPS transformers core with a thickness of 24μm nanocrystalline material, after heat treatment and curing treatment, can effectively solve the problem. (1) The solidification of the nanocrystalline iron core, the winding strength of the insulation film can achieve the requirements of winding, can be directly transformer winding; (2) the core of the core, After curing the release of iron core core diameter and outer diameter of the protection box to increase the size of some of the core to reduce the overall size, in particular, can increase the size of the window within 3 ~ 5mm, more heat dissipation, transformer safety (4) nano-crystalline transformer core design specifications can be more flexible, and can be used to protect the structure of the protective box, and improve the quality of the material; (3) to reduce the protection box material on the safety of the device, Core has a ring, rectangular, C-type variety of options for the design of the transformer and the latter part of the winding package provides more options.

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