DRV8432EVM

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Evaluation and Demonstration Boards and Kits provide an ideal platform for the evaluation or demonstration of motor control capability. The DRV8432EVM application field and working principle are an example of such boards used in stepper motor control. This article will discuss the application field and working principle of the DRV8432EVM.

The DRV8432EVM is a complete evaluation and demonstration board used for driving and controlling low voltage stepper motors. It features a wide variety of components and hardware necessary for effective operation, and is simple to use and configure. This board’s integrated circuit (IC) component is the DRV8432, a low RDS(on) stepper motor driver IC that allows the user to drive up to two stepper motors with up to 32 microsteps per step in either direction. The DRV8432 provides users with a wide range of control and diagnostics features, including multiple current decay modes, current regulation, bridge enable and short detection.

The DRV8432EVM’s application field is mainly used in equipment such as 3D printers, laser engravers, CNC machines, satellite antenna rotators, x-y plotters, and robotic arm control. Furthermore, in each of these fields, the board’s great versatility in controlling low voltage stepper motors can be highly advantageous. DRV8432EVM’s user adaptable PWM current control logic provides users with the opportunity to adjust the drive current and improve power efficiency.

The primary working principle of the DRV8432EVM is to utilize the included Microchip PIC32MX320F082 microcontroller to control the stepping patterns for the applied motor. This microcontroller serves as the main driver of the DRV8432EVM board and is programmed, in part, through a serial communication interface such as SPI. In addition, it can be used to monitor the status of the motor with its data reporting bits, and also can sense temperature from the thermistor on selected motor drivers. Utilizing the integrated logic level translator on board, the microcontroller can control the DRV8432 register settings, which sets the parameters for the motor current, PWM frequency and bridge enable.

The DRV8432EVM is released as an assembled ready-to-use board calibrated with reference current settings. A user may connect the board to the system power supply, and then read the appropriate settings for the motor configuration from the board’s datasheet. Users also have the option to adjust the parameters through the SPI interface. Furthermore, the board integrates a DRV8303 gate driver, which allows for up to three phases of control.

The DRV8432EVM is a fully featured evaluation board for controlling stepper motors. It utilizes a low power, low cost, and easy to configure DRV8432 integrated circuit. It has a wide variety of components and hardware necessary for efficient operation, and is well suited for the evaluation or demonstration of motor control capability. It allows users to adjust the drive current and improve power efficiency, and also integrates a DRV8303 gate driver for up to three phase control. This board is ideal for applications such as 3D printers, laser engravers, CNC machines, satellite antenna rotators, x-y plotters, and robotic arm control.

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