Infineon IRFB7545PBF N-Channel Power MOSFET: Key Specifications and Applications

The Infineon IRFB7545PBF is a high-performance N-channel power MOSFET engineered to meet the demanding requirements of modern power conversion systems. Utilizing Infineon's advanced Super Junction (SJ) technology, this component is designed for high efficiency, high switching speed, and robust performance in a wide range of applications.

Key Specifications

At the core of the IRFB7545PBF's performance is its impressive low on-state resistance (RDS(on)) of just 9.3 mΩ maximum at 10 V. This exceptionally low resistance is crucial for minimizing conduction losses, which directly translates to higher efficiency and reduced heat generation in power circuits. The device is rated for a drain-source voltage (VDS) of 150V, making it suitable for operations in environments with higher voltage stresses, such as power supplies and motor drives.

It can handle a continuous drain current (ID) of up to 109 A at a case temperature of 25°C, showcasing its ability to manage high power levels. Furthermore, its low gate charge (QG typical 120 nC) and fast switching characteristics are pivotal for reducing switching losses, especially in high-frequency circuits. The device is also characterized by its avalanche ruggedness and 100% Rg tested, ensuring high reliability and consistency across production batches.

Primary Applications

The combination of high voltage capability, low RDS(on), and fast switching speed makes the IRFB7545PBF an ideal choice for several key power electronics domains:

1. Switched-Mode Power Supplies (SMPS): It is extensively used in the power stages of server, telecom, and industrial SMPS, particularly in synchronous rectification and power factor correction (PFC) circuits, where efficiency is paramount.

2. Motor Control and Drives: The MOSFET's high current handling and ruggedness make it perfect for driving motors in industrial equipment, robotics, and automotive applications like electric power steering (EPS) and braking systems.

3. DC-DC Converters: Its performance benefits are leveraged in both high-current buck and boost converters, commonly found in renewable energy systems like solar inverters and battery management systems.

4. OR-ing and Hot-Swap Circuits: The device's robustness is advantageous in applications requiring redundant power supplies or live insertion of circuit boards.

ICGOODFIND In summary, the Infineon IRFB7545PBF stands out as a highly efficient and reliable power MOSFET. Its superior blend of low RDS(on), high current capability, and fast switching performance under the Super Junction platform makes it a cornerstone component for designers aiming to maximize efficiency and power density in their systems.

Keywords: Power MOSFET, Low RDS(on), Super Junction Technology, Synchronous Rectification, Switched-Mode Power Supplies (SMPS)