Different MOS packages correspond to different product characteristics and application fields. As a cutting-edge MOS package, TO-247-4L package is widely used in many fields because of its unique structure and advantages.

TO-247-4L package adopts a four-pin design. Compared with the traditional three-pin package (such as TO-247N), it adds a pin for the signal source terminal driven by the gate, and realizes the Kelvin connection. Through Kelvin connection, the package can separate the current in the power supply line from the current in the gate drive line, thus reducing the influence of the power supply line inductance in the package on the gate drive signal and improving the high-speed switching performance of the MOS transistor.

In addition, this kind of packaging product usually has low inductance and good thermal performance, which improves the reliability of the system.

Three advantages of TO-247-4L package:

First, it is helpful to improve the switching speed of MOSFET.

Due to the existence of parasitic inductance generated by the source bonding wire when the MOSFET is turned on, the reverse induced voltage will be generated, which reduces the voltage passing through the gate and source. The decrease of gate voltage after conduction reduces the conduction speed. In the TO-247-4L package, the VGS voltage through the MOSFET is almost equal to the driving voltage, so compared with the TO-247-3L package, the TO-247-4L package is more helpful to improve the switching speed of the MOSFET.

Second, it is helpful to suppress grid oscillation.

Compared with TO-247-3L, the gate oscillation amplitude of TO-247-4L package is smaller due to the reduction of parasitic inductance.

Third, the conduction loss can be reduced.

Compared with TO-247-3L, TO-247-4L package has faster switching speed and greatly reduced switching loss. The faster the switching speed of the device, the more benefits the Kelvin pin brings.

Because of the characteristics of TO-247-4L package, it can improve the switching speed, restrain the gate oscillation and improve the stability and reliability of the system. TO-247-4L packaging products are widely used in many fields, such as electric bicycles and electric motorcycles. In these applications, the high efficiency and reliability of TO-247-4L packaging products help to improve the dynamic performance and endurance of vehicles. In the communication power supply system, the high efficiency of TO-247-4L packaging products helps to reduce energy consumption and improve the overall performance of the system.

In addition, in the protection circuit of lithium battery, TO-247-4L package can provide fast response and efficient protection to ensure the safe use of the battery. TO-247-4L packaging products can play an important role in server power supply and UPS system, solar inverter and new energy vehicle charging station.

With the rapid development of technologies such as artificial intelligence and big data, the demand for high-power servers is growing rapidly. TO-247-4L package has a broad application prospect in the field of power conversion of high-power servers because of its excellent performance.

In a word, TO-247-4L packaging will occupy an important position in the future science and technology field with its technical advantages, wide market application and good development prospects. As a professional discrete device manufacturer, Heketai is very optimistic about the prospect of TO-247-4L package. With the continuous growth of market demand, the application scope of this package will be further expanded and become an important packaging form in the market, adding core kinetic energy to the semiconductor industry.