BD6874GLS-E2

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BD6874GLS-E2 is a source-side FET pre-driver IC for brushed DC motors (BDM), which can control four FETs of two phases. It is capable of driving four N-Channel MOSFETs for a single two-phase brushed DC motor.

The BD6874GLS-E2 is part of a family of highly integrated pre-drivers that integrate the detection circuit and protection circuitry to reduce the number of external components required. The IC also provides an integrated phase-shift PWM generator and Closed Loop speed control, making it easy to use in multi-phase brushless motor driver applications.

BD6874GLS-E2 Application Field

The BD6874GLS-E2 is used in a variety of applications, including motor control for home appliances, office automation devices, external hard drives and other related applications.

The device features a wide current range of 0.5-2.5A, an integrated phase-shift PWM timer, and an overcurrent protection (OCP) circuit. By combining a wide current range with an integrated phase-shift PWM timer and OCP, the device is well suited for applications such as motors in hair driers and drills, and other small motors.

The device is also used in enhanced speed control applications requiring high precision current regulation, such as car accessories and vehicle electronics, and in sound equipment applications such as speaker drivers.

BD6874GLS-E2 is suitable for use in low-lying areas and high temperature applications as its working temperature range is - 40°C ~ +105°C.

BD6874GLS-E2 Working Principle

The BD6874GLS-E2 motor pre-driver IC contains two circuit blocks: the high-side driver and the low-side driver, each of which consists of two FETs of two phases. The two FETs are connected to the power source, the motor\'s electrical controller, and the sense resistor.

The high-side driver block consists of a high-side FET, which is used to turn ON or OFF the power going to the motor. The low-side driver block consists of a low-side FET, which is used to regulate the current and/or control the speed of the motor. The sense resistor is used to monitor the current flowing through the motor, which is used to limit the current and protect the motor from over-current.

The BD6874GLS-E2 motor pre-driver IC uses an integrated phase-shift PWM timer to vary the amount of power sent to the motor, allowing for precise speed control. The integrated OCP circuit protects the motor from overcurrent conditions.

The BD6874GLS-E2 motor pre-driver IC is highly integrated and requires minimal external components for implementation. This makes it a suitable solution for applications where space is limited and cost effective solutions are desired.

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