IR4428S

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The IR4428S is a high-side and low-side gate driver from Infineon Technologies AG, specifically designed for use in controlling bipolar N-channel MOSFETs or IGBTs. The high-side and low-side gate driver provides efficient, precise, and low-loss switching of the drain voltage with minimum dead time between the high-side and low-side switchings. This excellent performance is achieved by combining the output range of up to 55V, the switching speed of 1.2µs, the efficient power efficiency, and the very low dead time of 0.25µs. This makes the IR4428S ideal for applications in automotive and industrial power modules, as well as in any other applications requiring reliable, precise, and high-efficiency power switching.

The IR4428S device is a dual, high-speed high-side/low-side driver operating from a 7V to 16V supply. The low-side gate voltage is equal to 0V. The output stage is capable of driving gates of N-channel MOSFETs and IGBTs with switching times from 0.25µs to 1.2µs. The gate driver includes separate gate open and gate close timing signals to ensure minimum dead time between the high-side and low-side switching. The device has a built-in protection circuit to prevent shoot-through and current runaway, as well as over-temperature protection. Additionally, the device offers soft-start and automatic self-reset when the gate turn-off current exceeds 15A.

The IR4428S is designed to provide high supply voltage with minimum pulse width and maximum efficiency. The device has an adjustable peak current from 1.5A to 10A, a PWM output drive, and a low dropout voltage regulator for external gate bias supply. Additionally, the device is equipped with an adjustable slew rate to prevent false turn-on due to short on-off switching, and a level-shifting output for controlling external power MOSFETs in differential mode.

Apart from its excellent performance, the IR4428S device has excellent safety, with Class 1 approval from Underwriters Laboratories, Inc. The device also makes use of a built-in over-voltage protection (OVP) to protect the device against over-voltage, under-voltage, and over-temperature conditions. Its protection circuit consists of a temperature sensor, current-sensing circuit, and an over-voltage protection circuit, enabling fast switching with fail-safe performance.

The IR4428S is designed to be used in a wide range of applications, such as automotive and industrial power modules, uninterruptible power supplies (UPS), motor drives, DC-to-DC converters, and other high-efficiency, high-speed switching applications. The device is especially well-suited for multi-phase applications, as well as high-voltage/multi-voltage automotive applications. In these applications, the device’s high efficiency, fast switching speed, and integrated protection circuits make it an ideal choice.

Overall, the IR4428S is an excellent choice for applications requiring precision, efficiency, and reliability in fast switching voltage and current control. By leveraging its excellent performance, the device enables high efficiency for gate driving applications and provides integrated protection for optimized user experience and assured safety in high-voltage control.

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