The I RF 9540NPBF is a Power MOSFET transistor produced by International Rectifier (now part of Infineon Technologies). It is commonly used in switching applications, such as power supplies and motor control systems, due to its ability to handle high voltages and currents.
Pin Function Specifications & Circuit Principle:
The IRF9540 NPBF is an N-channel MOSFET with the following pinout configuration:
Gate (G) – Controls the switching of the MOSFET. Drain (D) – The output side, where current flows out when the transistor is on. Source (S) – The input side, where current flows into the MOSFET. Pinout (Full 3-pin configuration):Pin 1 (Gate): This pin is used to control the MOSFET. By applying a voltage between the gate and source, the MOSFET switches from its off state (high resistance between drain and source) to its on state (low resistance between drain and source).
Pin 2 (Drain): The drain is where the current flows out when the MOSFET is conducting. The voltage at this pin will be equal to the voltage applied to the load connected to the MOSFET.
Pin 3 (Source): The source is the pin where the current enters when the MOSFET is conducting. This pin will generally be connected to ground or a negative power supply voltage in typical N-channel MOSFET applications.
Package Type:
The IRF9540NPBF comes in the TO-220 package, which is a 3-pin configuration, as described above.
Pin Function Table (Detailed Description):
Pin Description Function 1 (Gate) Gate Controls the MOSFET switching behavior. A positive voltage between Gate and Source turns the MOSFET on, and zero or negative voltage turns it off. 2 (Drain) Drain Output terminal. Current flows out through this pin when the MOSFET is on. Connected to the load in a switching circuit. 3 (Source) Source Input terminal. Current flows into the MOSFET through this pin when conducting.Circuit Principle and Operation:
The IRF9540NPBF operates as a high-power switch. When a voltage is applied to the Gate, it creates an electric field that either allows or prevents current from flowing between the Drain and Source. When the voltage at the Gate is above a certain threshold, the MOSFET enters the "on" state, allowing current to flow through it. In the "off" state, the MOSFET blocks current from flowing.
Common Applications:
Power supplies: Used in voltage regulation circuits. Motor control: Switching for controlling motors. DC-DC converters: Power management systems.20 Frequently Asked Questions (FAQ) About IRF9540NPBF
What is the maximum Gate-to-Source voltage for IRF9540NPBF? The maximum Gate-to-Source voltage for the IRF9540NPBF is ±20V. What is the maximum Drain-to-Source voltage for IRF9540NPBF? The maximum Drain-to-Source voltage for the IRF9540NPBF is 100V. What is the typical threshold voltage for the IRF9540NPBF? The typical threshold voltage (Vgs(th)) for the IRF9540NPBF is between 2V and 4V. Can IRF9540NPBF be used for high-frequency switching? The IRF9540NPBF is better suited for low- to medium-frequency applications due to its relatively slow switching characteristics. What is the maximum continuous Drain current for IRF9540NPBF? The maximum continuous Drain current is 23A (at 25°C). What type of package does the IRF9540NPBF come in? The IRF9540NPBF comes in the TO-220 package. What is the maximum power dissipation for the IRF9540NPBF? The maximum power dissipation is 150W (at 25°C). What is the maximum junction temperature for IRF9540NPBF? The maximum junction temperature is 150°C. What is the on-state resistance (Rds(on)) of IRF9540NPBF? The Rds(on) is typically 0.117Ω at Vgs = 10V.Is IRF9540NPBF suitable for use in automotive circuits?
Yes, the IRF9540NPBF is suitable for automotive applications, especially in switching power supplies and motor control.Can IRF9540NPBF be used for high-voltage applications?
Yes, it can handle voltages up to 100V, which makes it suitable for medium-voltage power supplies.What is the Gate charge for the IRF9540NPBF?
The total Gate charge (Qg) for the IRF9540NPBF is typically 140nC.Can the IRF9540NPBF be used for inductive loads?
Yes, the IRF9540NPBF can switch inductive loads but should be used with a flyback diode to protect against voltage spikes.What is the typical turn-on time for IRF9540NPBF?
The typical turn-on time is around 20ns.What is the typical turn-off time for IRF9540NPBF?
The typical turn-off time is around 70ns.What is the reverse recovery time of IRF9540NPBF?
The reverse recovery time is typically 50ns.What is the thermal resistance junction-to-case (RθJC) for IRF9540NPBF?
The thermal resistance is typically 3°C/W.Is the IRF9540NPBF suitable for use in power switching regulators?
Yes, it is widely used in power switching regulators and converters.Can the IRF9540NPBF handle short circuit conditions?
The IRF9540NPBF is not designed to handle short circuit conditions without protection, as it may cause thermal damage.What is the maximum Gate threshold voltage for the IRF9540NPBF?
The maximum Gate threshold voltage is 4V.If you'd like additional information on the component, or a deeper dive into its characteristics or applications, let me know!