MAX4428ESA+T

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power management integrated circuits (PMIC) are a special type of integrated circuits (ICs) for managing power in devices with multiple power supply sources. PMICs typically provide a single, centralized power management and control solution instead of individual power supplies. A popular device among PMIC manufacturers is the MAX4428ESA+T gate driver, which is used to control many types of power management applications and devices. This article provides an overview of the MAX4428ESA+T application field and working principle.

Applications of the MAX4428ESA+T

The MAX4428ESA+T is a high-performance gate driver IC for controlling a wide variety of applications, such as hard-switched DC-DC converters, over voltage and over current protection, motor control, boost converter designs, switch mode power supplies, and resonant converters. The wide range of applications is due to its wide input and output voltage range, adjustable switching frequency, short circuit protection, current limited drive capability and adjustable dead time.

The MAX4428ESA+T is also designed to improve system efficiency, as it is capable of delivering up to 2A peak current with output voltage range of 3 to 20V in single or dual supply configuration. The device supports a wide input supply range of 8 to 28V and is capable of operating across −40°C to +125°C ambient temperature range.

Also, its input pins are designed to accept common logic signals, usually 3.3V or 5V, without a device level-shifter. The adjustable dead time of the device ranges from 2.5V to x V, allowing for precise timing of the ON-OFF pulses of the circuit.

Working Principle of MAX4428ESA+T

In general, the MAX4428ESA+T is most commonly used as a gate drive for MOSFETs in switching applications. It is a low-side (sourcing) type driver, meaning it pulls the gate voltage from low to release the MOSFET. The device has an adjustable dead time to delay the rise and fall of the gate voltage for a given duration.

The device is provided with Enable (EN) and Shutdown (SD) pins. When EN is set to ‘1’, the GS pin operates normally as billed. When EN is set to ‘0’, the GS pin becomes disabled. The SD pin is used as an extra layer of protection, which can be used to shut down the device in an event of failure.

For over-voltage and over-current protection, the MAX4428ESA+T features a programmable overshoot current limit and a programmable over-voltage shutdown threshold voltage. The device also supports under-voltage lockout (UVLO), making it ideal for automotive applications.

In addition, the device supports 3-state protection, which prevents the device from being over-stressed during start-up. To achieve this, the device has a dedicated turn on threshold, which is monitored to protect the device. If the turn on threshold is exceeded, the device is disabled and restarted automatically after a given time period.

Conclusion

The MAX4428ESA+T is a high-performance gate driver IC for controlling a wide variety of applications. Its wide input voltage range and adjustable switching frequency, paired with overload protection, makes it an ideal choice for many applications. It also features a programmable overshoot current limit, a programmable over-voltage shutdown threshold voltage, and 3-state protection.

The specific data is subject to PDF, and the above content is for reference