L9958 H-Bridge 브러쉬 DC 모터 드라이버 -SPI
(DC MOTOR 24 CLICK)
개요
- 본 제품은 L9958 H-Bridge 브러쉬 DC 모터 드라이버 -SPI 입니다.
- SPI로 제어되는 L9958 칩을 탑재하고 있으며, 4V-28V 전압 범위에서 동작합니다.
- 다이렉트 PWM 모터 컨트롤 및 전류 제한 설정을 2.5A에서 8.6A까지 SPI 인터페이스를 통해 설정할 수 있습니다.
- 신뢰성 높은 동작을 위해 분석 및 보호 기능을 제공합니다.
특징
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HOW DOES IT WORK?
DC Motor 24 Click is based on the L9958, a fully integrated motor driver for DC and stepper motors from STMicroelectronics used in safety-critical applications and under extreme environmental conditions. This Click board™ provides all the input and output capabilities necessary to drive DC or stepper motors (OUT terminal), alongside monitor diagnostic functions. The L9958 is rated for an operating voltage range from 4V to 28V (VIN terminal), with direct PWM motor control. The PWM control with simple direction control, DIR pin routed to the AN pin on the mikroBUS™ socket, allows MCU to manage the direction of the DC motor (clockwise or counterclockwise). This combination enables highly efficient motor drive output, ensuring reliable operation for highly competitive automotive applications.
This Click board™ communicates with MCU using a 4-wire SPI-compatible interface with a maximum frequency of 5MHz, for the configuration of the L9958. The SPI interface can set the current regulation threshold from 2.5A to 8.6A, typically in four steps (6.6A is a default). The L9958 also has detailed failure diagnostics on each channel provided via the SPI interface. The H-bridge is protected against temperature and short circuits and has an undervoltage/ overvoltage lockout for all the supply voltages. All malfunctions cause the output stages to go tri-state.
The output can be disabled (set to tri-state) via a combination of logic states of an onboard switch labeled as DI and enable pin routed to the EN pin on the mikroBUS™ socket. The internal H-bridge also contains integrated free-wheel diodes. In the case of the free-wheeling condition, the low-side transistor is switched ON in parallel to its diode to reduce power dissipation.
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 controlling DC and stepper motors in safety-critical automotive applications and under extreme environmental conditions On-board modules L9958 - fully integrated motor driver for DC and stepper motors from STMicroelectronics Key Features SPI-programmable current threshold, direct PWM control, selectable motor direction, freewheeling condition, full protection and diagnostics, and more Interface PWM,SPI Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V