Twelve Advantages of High Frequency Transformer

(1) Current distribution

A typical high frequency transformer secondary winding has several parallel coils. Each secondary winding is coupled to the same primary winding. Therefore, the number of ampere-turns generated by the secondary winding current is equal to the number of ampere-turns generated by the primary winding (ignoring the excitation current). This feature is especially useful for parallel rectifier circuits. The winding currents are equally distributed, and no shunt resistors or other components are required in the parallel rectification circuit.

(2) High current density

The high frequency transformer has an excellent temperature rise design. Because of these characteristics, it achieves high current densities in a small package.

(3) High efficiency

Adjusting the leakage inductance allows it to have a very fast switching time and very low crossover loss, which allows it to achieve high efficiency.

(4) High power density

Because the high-frequency transformer components are small in size and have excellent temperature dissipation characteristics, the related semiconductor devices and inductors can be tightly packaged together to achieve high power density. Its current density is 30A/module.

(5) low cost

The entire high-frequency transformer is composed of a small number of related inexpensive components, and the assembly is convenient, so the cost of the transformer is very low.

(6) Saving the cost of components connected to it

Since its leakage inductance is small, the switching loss is low, and the stress applied to the components connected is reduced. Therefore, the components connected to it can use lower cost, low power rating components.

(7) Excellent heat dissipation characteristics

High frequency transformers are small pieces with a high surface area to volume ratio and very short thermal passages. It is good for heat dissipation. The interturn loss between the primary and secondary windings is small. This core's unique geometry effectively reduces core losses. So it can achieve high magnetic flux density. It can work between -50 ° C and 120 ° C.

(8) Low leakage inductance

Good coupling between the windings and the windings keeps the leakage inductance between the winding turns to a minimum. The connection from the output to the auxiliary part is short and tightly assembled, so the leakage inductance of the windings between the windings is also minimal.

(9) Excellent high frequency characteristics

Prior to this, when the transformer was running at high frequencies, the switching losses increased and the transformer was too hot. These problems were solved because of the appearance of Lan transformers. The lan transformer can be designed as a high-frequency transformer to provide a transformer module that is both economical and good. It can work between 100kHz and 500kHz.

(10) Simple structure

High-frequency transformers are made up of a small number of components and a minimum of windings, which are particularly suitable for automated assembly.

(11) Low profile

The magnetic core used in the flat panel transformer is small and can be arranged on the surface of the flat plate. Each core unit has a shape ranging from 8mm to 25mm.

(12) High dielectric strength

The high frequency transformer is easily insulated according to the required number of insulation layers and thickness. It can be dielectrically insulated according to the customer's requirements for leakage distance. The withstand voltage between the primary and secondary windings is greater than 40,000V.