UCC27524ADGNR

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PMIC - Gate Drivers are power management integrated circuits (ICs) that can be used to convert signals into a form that can drive a gate of a power switch. A typical example of a PMIC - Gate Driver is UCC27524ADGNR which is employed by professionals to provide low loss and high efficiency power conversion. This article provides an overview of UCC27524ADGNR application field and working principle.

Application Field

UCC27524ADGNR enables efficient single-ended to push-pull conversion of an incoming signal for drive of for power MOSFET and IGBT switches. In Single-ended configuration, the UCC27524ADGNR is well-suited for low power applications where high efficiency and low Rds(on) of the switches is desired. The device itself is low cost and very easy to use. It is used in a wide range of applications, such as motor drive, lighting, iGBT/MOSFET gate drive, and switching power supplies, making it suitable for consumer applications, industrial control, and automotive applications.

Working Principle

UCC27524ADGNR is an isolated gate driver device which uses an external isolated DC-DC (DC-DC) converter to enable it to provide low loss power conversion for single-ended to push-pull conversion. The device is designed to operate from an input of up to 28V, with a 4A peak source and a 1A peak sink current capability. It is typically configured as an open drain-clamp with an adjustable short-circuit current limit.

The device provides an easy to use interface to allow the user to control the speed and voltage of its gate. The typical gate driver of the UCC27524ADGNR includes a GATE pin, a timing capacitor and an enable/disable switch (EN). The GATE pin is used to supply the power that is required to close the gate. The timing capacitor is used to set the delay time, while the EN switch is used to enable and disable the gate driver.

The UCC27524ADGNR includes an on-chip protection feature that prevents over-voltage and over-current conditions. The current limit of the device can be programmed by connecting a sense resistor to the GATE pin. The sense resistor allows the device to sense the current through the MOSFET, and the current limit can be set to one of eight pre-defined settings via the CNRSL pin.

The device also includes several safety features, including over-temperature protection and ESD protection. When the temperature of the device exceeds its preset operating range, the device will go into a protection mode and the gate drive current will be shut off. Similarly, when an ESD event occurs, the device will enter a protection mode and the gate drive current will be shut off until the ESD condition is cleared.

Conclusion

UCC27524ADGNR is a low loss and high efficiency gate driver IC that can be used to efficiently convert signals into a form that can drive a gate of a power switch. The device is ideal for applications such as motor drive, lighting, iGBT/MOSFET gate drive, and switching power supplies which require low cost and ease of use. It also has several safety features, such as on-chip protection against over-voltage, over-current and ESD, making it a reliable and safe choice for a wide range of applications.

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