Infineon IRF9328TRPBF P-Channel Power MOSFET: Datasheet, Application Circuit, and Pinout Configuration

The Infineon IRF9328TRPBF is a robust P-Channel Power MOSFET engineered for high-efficiency power management applications. Utilizing advanced trench technology, this component is optimized for low on-state resistance (RDS(on)) and high switching speeds, making it an ideal choice for load switching, power supplies, and DC-DC converters.

Key Datasheet Specifications

Critical parameters from the datasheet define the IRF9328TRPBF's capabilities. It boasts a drain-source voltage (VDS) of -30V and a continuous drain current (ID) of -12A, suitable for various medium-power circuits. Its standout feature is the exceptionally low RDS(on) of just 0.022Ω (max. at VGS = -10V), which minimizes conduction losses and improves overall system efficiency. The device is also characterized by its avalanche ruggedness and a low gate charge, facilitating simple drive circuit design and enhancing its reliability in demanding environments.

Typical Application Circuit

A common use case for this P-Channel MOSFET is as a high-side load switch. In such a configuration:

The source (S) is connected to the power supply (e.g., +12V).

The drain (D) is connected to the load (e.g., a motor or lamp).

The gate (G) is controlled by a driver IC or a simple logic-level signal through a series resistor.

To ensure safe and reliable operation, a pull-up resistor is often used to keep the switch off by default, and a zener diode may be added between the gate and source to protect against voltage spikes exceeding the maximum gate-source voltage (VGS ±20V). This simple circuit effectively controls power to a load with minimal voltage drop.

Pinout Configuration

The IRF9328TRPBF is offered in the space-efficient SO-8 package. The pinout is standard for this package type:

Pin 1, 2, 3, 4 (Drain): These pins are internally connected to the drain terminal of the MOSFET. They must be connected to the load.

Pin 5, 6, 7, 8 (Source, Gate): Pins 5, 6, and 7 are the source terminals. Pin 8 is the gate terminal. Correctly identifying the gate is crucial, as improper voltage application can instantly damage the device.

ICGOODFIND Summary

The Infineon IRF9328TRPBF is a highly efficient P-Channel MOSFET distinguished by its very low on-resistance and strong current handling capability. Its excellent electrical characteristics make it a superior choice for designers seeking to minimize power loss and maximize thermal performance in space-constrained applications like battery management systems, power distribution switches, and motor control circuits.

Keywords:

P-Channel MOSFET

Low RDS(on)

Power Management

Load Switch

SO-8 Package