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            HOME > Product Center > Transformer > Switching transformer

            Switching transformer


            The above transformers are widely used in switching power supply and have the following characteristics:

            Use frequency:25-500kHZ

            Power range:10-500W

            High permeability, high efficiency, low leakage, good heat dissipation, small electromagnetic interference

            Magnetic core:EE、EC、EI、EF、EER、ED、EFD、PQ、RM

            Magnetic core material:SP3、SP4、SP4A

            Installation: can be designed according to customer requirements


            Various switching power supply: dc-dc, ac-dc-ac, dc-ac,UPS power supply, etc

            Circuit form: forward excitation, back excitation, push pull, half bridge, full bridge circuit, etc

            Used for power supply of communication, TV, air conditioner and computer. Switching power supply in all kinds of electronic equipment。

            Switching transformer series.pdf


            Typical circuit

            (1)A typical circuit

            In switching power supply circuits, the commonly used typical circuit topologies are:

            Forward - excited, back - excited, push - pull, half - bridge (full - bridge), etc。A typical three-way output forward converter topology is shown below。When the dc input voltage is 60-200v and the output power is 200W,Forward converter is probably the most widely used topology。


             Three-terminal output forward converter topology

            The typical circuit diagram of flyback converter is shown below5-150w low cost power supply applicationsIs very extensive, and its greatest advantage isNo secondary output inductance is required。



            Flyback converter topology

            The typical topology of a full-bridge converter is shown in the figure Input network pressure for 220V or higher applications,Its main advantage is that the leakage voltage spike clamp on the primary side of the transformer can be located at the dc bus voltage and the leakage energy can be fed back to the input bus。


            Full bridge converter topology

            With a special product research and development center, keep up with the pace of industry technology, to provide customers with efficient support services

            Invest more than 3% of the annual sales as r&d expenses to ensure the stable development of the company's industry and maintain long-term competitive advantages

            Accumulated more than 100 patents, technology continued to accumulate

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