STL90N6F7

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STL90N6F7 Application Field and Working Principle

The STL90N6F7 is a high-voltage, low-loss and cost-effective N-Channel Field Effect Transistor (FET) produced by STMicroelectronics. It is ideal for a variety of applications including ac-dc converters, lighting and motor control, and power supplies.

The STL90N6F7 is manufactured using advanced STMicroelectronics technologies. It features a low drain to source saturation voltages (Vdss) of 90V, gate to source resistance (Rgs) of 6.7Ohms, and gate charge (Qgs) of 0.3µC. It also has a maximum drain current of 32A and a maximum drain to source voltage (Vds) of 225V. Furthermore, it has a maximum total gate charge (Qg) of 0.83µC and a maximum operating junction temperature of 175°C.

The working principle of the STL90N6F7 is the same as that of other N-Channel FETs. It operates on the principle of capacitive charge transfer which is used to control the applied voltage across a channel of semiconductor material. When a small signal of direct current (DC) is applied to the gate of the FET, the channel becomes charged and an electric field is created across the channel. This electric field can be used to control the current flow from the drain to the source, thereby allowing the Drain pin of the FET to be used as an output. The strength of the field is determined by the magnitude of the applied gate signal, so the transistor can be used in applications where the current can be precisely controlled.

The STL90N6F7 is well-suited for various applications such as ac-dc converters, motor speed control, and power supplies. It is suitable for use in motor control systems because of its low Rgs and Qgs values. The low Rgs value enables the FET to have a low impedance, allowing it to rapidly switch. The Qgs value also allows for a faster switching time which is useful in motor control systems. Additionally, it is often used in power supply systems due to its high Vds and Vdss rating, making it suitable for use with switch-mode power supplies where a high voltage is often required.

The STL90N6F7 also has many applications in the lighting industry. It has a low saturation voltage, so it is capable of maintaining a low voltage drop between the LED and the driver circuit. This helps to minimize power loss and thus increases the efficiency of the LED driver circuit. Furthermore, it is capable of handling high currents and high voltages, enabling it to be used for driving high power LEDs and arrays. The high current capability also makes it suitable for use in dimmable LED lighting systems.

In conclusion, the STL90N6F7 is a versatile and cost-effective N-Channel FET that is suitable for a variety of applications. It has a low Rgs, Qgs and a high Vds and Vdss rating, allowing it to be used for ac-dc converters, motor speed control, power supplies, and lighting applications. Its robust design and features make it a preferred choice for many designers.

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