DRV8704EVM

Series:	--
Part Status:	Active
Type:	Power Management
Function:	Motor Controller/Driver
Embedded:	--
Utilized IC / Part:	DRV8704
Primary Attributes:	Dual Full-Bridge (H-Bridge) Driver
Supplied Contents:	Board(s)
Secondary Attributes:	Potentiometer Speed Control

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Evaluation and Demonstration Boards and Kits: DRV8704EVM Application Field and Working Principle

The DRV8704EVM is a low-friction-bridging (LFB) motor power stage evaluation module. It is specifically designed for motion control and smart transportation applications using throttle or motion control actuators, and it is a part of Texas Instruments’ platform of optimized motor drive solutions. With this evaluation board, the features, performance, and operation of the DRV8704 are easy to analyze.

Overview

The DRV8704EVM is an evaluation board featuring two motor drive LFB stage integrated circuits each powered directly by an H-bridge and a low-loss battery input. The DRV8704EVM operates efficiently in closed loop control to deliver an extended current range and fewer torque ripple components. Through an SPI interface, the DRV8704EVM provides control of brushless motors and other power efficiency designs. The monitoring device includes applications for speed, position, and closed-loop torque and implements self-diagnostics.

Applications

The DRV8704EVM is used in applications for smart transportation and motion control. Smart transportation applications include throttle actuator, traction, and electric vehicle charging. Motion control applications include valve or pump control and gantry motion control. The evaluation board can also be used for applications such as industrial applications, medical equipment, automotive, and other applications.

Features and Benefits

The DRV8704EVM offers several features and benefits. These include a robust design that provides the industry’s highest efficiency. The design of the board also offers maximum flexibility, with the ability to interface with different types of motor control projects. Additionally, the board has a low profile with no external power needed and an easy-to-understand configuration. The evaluation board also includes a Pulse Width Modulator (PWM) generator for applications such as speed control and current sensor feedback for applications such as torque control.

Working Principle

The working principle of the DRV8704EVM evaluation board is based on low-friction-bridging (LFB) motor power stage design. This design is used to bridge two motor power stages, such as an H-bridge, in order to provide higher power stages with lower torque ripple components. The evaluation board also implements a feedback system, which is used to monitor the speed, position, and torque of the motor.The DRV8704EVM evaluation board also includes an SPI interface, which is used to control the board. Through the SPI interface, the user is able to adjust the motor parameters and adjust the power stages of the motor. Additionally, the SPI interface can be used to monitor and diagnose any faults with the DRV8704EVM.

Conclusion

The DRV8704EVM evaluation board is a powerful tool for evaluating the features, performance, and operation of the DRV8704 motor power stage design. It offers maximum flexibility with its low profile and easy-to-understand configuration. The evaluation board is ideal for smart transportation and motion control applications, as well as industrial, medical, and automotive applications. Moreover, the board can be used to configure, monitor, and diagnose motor power stages through an SPI interface.

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