IR22381QPBF

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IR22381QPBF is an integrated gate driver developed by International Rectifier, which is categorized as a Power Management IC (PMIC) – Gate Drivers. It is a 3-channel high-current source/ sink gate drive IC for motor signalling applications. This device is capable of providing adjustable dead-time, as well as fast turn off parameter by way of a PWM modulator. It delivers reliable, high-speed and high-current gate drive outputs for maximum efficiency, through its 4A/1.5A source/sink capability.

The intended application field of IR22381QPBF is 3-phase motor signal applications. It can be used for a wide range of motors, such as stepper motors, brushless DC (BLDC) motors, and Small Outline Integrated Circuit (SOIC) switches. It can also be used in situations where bidirectional switching of motors is needed, as it provides a high-current sink output to shut off the motor quickly.

The working principle of IR22381QPBF is based on the combination of Pulse Width Modulation (PWM) and Digital Speed Control (DSC) techniques. The PWM modulator mainly provides an adjustable dead-time, which allows for more precise speed control of motor signals. The DSC technology is then employed to adjust the speed of the motor signals based on the desired output response. Furthermore, the 4A/1.5A source/sink capability of the device helps to deliver reliable, high-speed and high-current gate drive outputs for maximum efficiency.

In addition, the device also features a low-side logic output that provides an indication of the channel’s high-side or low-side gate voltage. This allows for monitoring of the motor’s operating status and/or response to commands. Furthermore, it also provides protection against overtemperature due to its thermal foldback feature, which reduces the available gate drive current when the temperature exceeds a certain predetermined level. Lastly, the device is provided in a small SOP-8 package, which reduces its overall footprint and allows for better heat dissipation.

In summary, IR22381QPBF is a PMIC - Gate Driver IC from International Rectifier, which is mainly intended for motor signal applications. It provides adjustable dead-time and fast turn off parameter via its PWM modulator, as well as 4A/1.5A source/sink capability for reliable, high-speed and high-current gate drive outputs. Moreover, it also features a low-side logic output, and provides protection against overtemperature. This makes it suitable for a wide range of motor control applications.

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