IR2138QPBF

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IR2138QPBF Application Field and Working Principle

IR2138QPBF is one of the most popular gate drivers in the PMIC - Gate Drivers category. It is used for high-side and low-side drive of N-channel MOSFETs and IGBTs, in applications such as motor control, AC inverters and other power supply applications. It supports both low-side and high-side controls, and operates from a supply voltage range of 5V to 18V.

Gate drivers are used to drive MOSFETs and IGBTs into conduction or cut-off. In order to achieve these functions, IR2138QPBF utilizes 3 distinct sections: gate drive, control logic and output stage. The gate drive is responsible for abstraction of the input signals and delivering the required gate driving voltage to the output stage. The control logic acts as an interpreter for the input signals, thus converting them into a 3-state signals for the output stage. The output stage is responsible for controlling the conduction of the MOSFETs and IGBTs by delivering the appropriate voltage level to their gates.

The gate driver output can be configured in three different states: active low, active high, and open drain. In active low configuration, it will drive the MOSFET gates at the low side to ground. In active high configuration, it will drive the MOSFET gates at the high side to their respective VDD. In open drain configuration, the output is not driven, thereby allowing the gate voltage to float.

The IR2138QPBF has several excellent features, such as built in MOSFET protection, adjustable slew rate, and a separate supply pin for the high-side gate driver supply. The built in MOSFET protection features ensure that the device is protected from overvoltage, overcurrent and temperature related failures. The adjustable slew rate allows for faster switching of the output MOSFETs, thereby providing for a better overall system performance. The separate supply pin for the high-side gate driver supply ensures a better supply regulation and a more reliable operation.

The IR2138QPBF is an ideal choice for any power supply application, as it offers an enhanced system performance and reliable operation. This device is suitable for use in high-power applications, such as motor drives, AC inverters and other power supply applications. Additionally, the device is pin-compatible with other gate drivers and can be easily swappable, providing helps to save the time and costs associated with developing and integrating a new driver.

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