IR4426SPBF

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IR4426SPBF Gate Driver

The IR4426SPBF Gate Driver is an Integrated Circuit (IC) specially designed for power management and control applications. It is an advanced High and Low Side Driver IC with a push-pull configuration. It is part of the Power Management and Integrated Circuit (PMIC) Gate Driver family and is capable of driving a wide range of loads, both resistive and inductive.

Applications

The IR4426SPBF is used in a variety of applications ranging from Industrial Control, Automotive, Automated Test Equipment, Motor Control, Building Automation, and Medical applications. It can be used to switch loads in excess of four amperes in half-bridge configuration. The IC’s onboard circuitry provides adjustable over-voltage protection and deadtime control, making it an ideal solution for high-power applications. The integrated high and low side drivers are also capable of driving a variety of loads, including IGBTs, MOSFETs, and/or Thyristors.

Working Principle

The IR4426SPBF gate driver consists of two outputs, which are internally connected to each other, and have complementary drive levels. The two outputs are referred to as the High side (HS) and the Low side (LS) outputs. The basic function of the gate driver is to provide the necessary drive necessary to control the power switching of the load. This is accomplished by providing separate outputs for each side of the load. The signal applied to the respective outputs will then determine the power level of the load. The IR4426SPBF Gate Driver also provides a controlled deadtime (or hysteresis). This ensures that the power switching of the load is properly managed, allowing it to switch rapidly and safely.

Configuration of the IR4426SPBF

The IR4426SPBF Gate Driver has two inputs which control its operation. These inputs are referred to as the Input (IN) and Enable (EN) inputs. The IN input is used to switch the load on or off. When a logical high voltage (5V) is applied to the IN input the HS Output will be driven high and the LS Output will be driven low. This results in a high-side driver being driven to the load. Reversing the logic voltage to a logic low (0V) will result in the HS Output being driven low and the LS Output being driven high, resulting in a low-side driver being driven to the load. The EN input is used to enable or disable the function of the IC. When a logical high voltage is applied to this input, the gate driver will be enabled and will output the appropriate drivers for the load. Applying a logical low voltage to the EN input will disable the gate driver and outputs, thus preventing any unintended switching of the load.

Conclusion

The IR4426SPBF gate driver is an ideal choice for a variety of integrated circuit power management and control applications. Its push-pull configuration allows it to drive a wide range of resistive and inductive loads, while its onboard protection and deadtime control ensure that the load can be switched rapidly and safely. The IR4426SPBF gate driver also provides two inputs, the IN and EN inputs, which allow users to control and enable their gate driver, allowing their load to be switched either on or off with ease.

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