A4920SETTR-T

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PMIC - Motor Drivers, Controllers

A4920SETTR-T is a three-phase, smart gate drive and system protection IC for brushless DC (BLDC) applications. It allows customers to develop advanced and reliable control and drive systems. The device includes two gate drivers and two integrated high- and low-side power MOSFETs with an RDS(ON) rating of 2.1 Ω per channel. It also provides a number of precision-set analog and digital system protection features, including advanced protection against powervalue ground fault, over current and over temperature events.

Application Field

A4920SETTR-T can be used in a wide variety of applications, such as brushless DC (BLDC) motor systems and three-phase fans in automotive, industrial, and consumer applications. Additionally, it can also be used in commercial motors and other three-phase machines.

Working Principle

The working principle of A4920SETTR-T is based on the idea of “intelligent” gate drives which provide both analog and digital protection, as well as a number of important features such as precise over-current, over-temperature, and ground fault protection.

The drive has two main components: the main analog power circuit, which includes the two integrated high-low power MOS transistors per channel, and the driver IC, which controls the power delivery of the power transistors. The main analog power circuit controls the switching frequency and the direction of current by using PWM or other control signals. It also monitors motor power, current and voltage to ensure proper operation. The driver IC then controls the current through the power MOS transistors to provide the necessary current to the BLDC motor.

The A4920SETTR-T is designed with advanced digital protection for the over-current, ground fault and over-temperature conditions. It also provides powerful protection against ground fault, which raises the trip current when the ground fault threshold is reached. Furthermore, it has a programmable dead time control to improve the current sense accuracy, and an over-voltage and under-voltage protection to protect the motor from over-voltage and under-voltage spikes.

In summary, the A4920SETTR-T is a robust gate drive and system protection IC used for BLDC applications. It provides a number of important features such as precise over-current and ground fault protection, as well as high- and low-side power MOS transistors. It is an ideal solution for a variety of applications, including industrial, automotive and consumer applications.

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