듀얼 채널 DC 모터 드라이버 -TB67H481FNG
(DC MOTOR 13 CLICK)
개요
- 본 제품은 듀얼 채널 DC 모터 드라이버 -TB67H481FNG입니다.
- TB67H481FNG 모터 드라이버 칩을 기반으로 디자인된 제품입니다.
- PWM 입력 인터페이스로 DC 모터를 제어합니다.
- 8.2V-44V 동작 전압을 가지고 있으며, 최대 2A 전류 용량을 가지고 있습니다.
특징
-
HOW DOES IT WORK?
DC Motor 13 Click is based on the TB67H481FNG, a dual-channel, H-bridge, brushed DC motor driver from Toshiba Semiconductor. The TB67H481FNG has a current limit function that monitors the current flowing in the motor and performs constant current PWM control. When the motor current reaches the set current value, determined using onboard VREF trimmers (VREFA and VREFB), the TB67H481FNG shifts to Decay mode and annotates the current. Various Decay mode functions are selectable by positioning the SMD jumper, labeled as DECAY, to an appropriate position marked as 0 and 1. Also, Mixed Decay Mode can be selected by removing the JP2 jumper for the board. The TB67H481FNG has a built-in regulator that allows the motor to be driven by a single power supply, provides a motor output voltage rating of around 40V, and has integrated protection mechanisms such as over-current, over-temperature, and under-voltage lockout for error detection.
The setting current value can be adjusted with the torque function (100%, 71%, 38%, or 0%), controlled through the PCA9538A port expander, which establishes communication with the MCU via the I2C serial interface. When high torque is not needed, lowering the torque setting can suppress the motor current. In addition to these torque setting pins, with the help of the expander, it is also possible to control some other signals, such as the control signals for selecting the operating mode of the motor driver. These pins, in combination with AI1 and BI1 pins, routed to default positions of CS and PWM pins of the mikroBUS™ socket, enable operational modes like CW, CCW, or short-brake.
The PCA9538A also allows choosing the least significant bit (LSB) of its I2C slave address by positioning SMD jumpers labeled as ADDR SEL to an appropriate position marked as 0 and 1, alongside its interrupt feature routed to the INT pin of the mikroBUS™ socket. Besides, all circuits can be stopped using the Sleep function, routed to default positions of the AN pin of the mikroBUS™ socket, and thus enable power saving mode, while the RST pin provides a general-purpose reset function.
The DC Motor 13 Click supports an external power supply for the TB67H481FNG, which can be connected to the input terminal labeled as VM and should be within the range of 8.2V to 44V, while the two brushed or one stepping motor coils can be connected to the terminals labeled as B+, B-, A-, and A+.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type Brushed Applications Can be used for driving two brushed or one stepping motors in various applications such as consumer electronics and industrial equipment On-board modules TB67H481FNG - dual-channel, H-bridge, brushed DC motor driver from Toshiba Semiconductor Key Features Low power consumption, BiCD-based structure, high breakdown voltage/large current, power saving function, various protection features, selectable decay mode, error detection function, and more Interface GPIO,I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V