햅틱 모터 드라이버 모듈 -LC898302AXA
(HAPTIC 2 CLICK)
개요
- 본 제품은 햅틱 모터 드라이버 모듈 -LC898302AXA 입니다.
- LRA 및 ERM 어플리케이션 전용 LC898302AXA 모터 드라이버 칩 기반으로 디자인된 제품으로 PWM 한개의 핀으로 제어가 가능합니다.
- 3.3V로 동작합니다.
특징
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Type Haptic Applications Can be used for numerous everyday applications such as indicator systems, game consoles, training equipment/simulators with haptics function, robotics and mechatronics, and many more. On-board modules LC898302AXA - linear vibration motor driver dedicated to LRA (Linear Resonant Actuator) and ERM (Eccentric Rotating Mass) applications from ON Semiconductor Key Features Low power consumption, automatic adjustment to the resonance frequency for LRA, adjustable drive and brake voltage, low driving noise, available to drive a LRA and ERM, and more. Interface PWM Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V -
HAPTIC 2 Click as its foundation uses the LC898302AXA, a linear vibration motor driver dedicated to LRA (Linear Resonant Actuator) and ERM (Eccentric Rotating Mass) applications from ON Semiconductor. The original driving waveform enables low power consumption, and it is helpful to maintain battery lifetime. It allows crisp vibration thanks to automatic braking and over-driving feature. The drive frequency automatically adjusts to the resonance frequency of the linear vibrator without the use of other external parts.
As a result of this very effective drive, the vibration is as powerful as possible using minimal energy compared to classical solutions. It also ignores the deviation of resonance frequency thanks to auto-tuning function. This function can increase the perceived vibration force by over 20%, making it far more efficient than conventional haptic driving solutions. They require minimal power but are capable of maintaining a high level of vibration.
The LRA motors rely on a magnet attached to the case by a spring where a magnetic field from the coil causes vibration activity initiation. Compared to ERM, the LRA have better responsiveness improving system performance. The ERM type of haptic motor causes the off-balance mass to rotate. The mass movement results in an asymmetric centripetal force, leading to the motor's displacement. Using ERM motor, ERM driving voltage can be adjusted through an adjustment resistor connected between OUT1 pin of Click board terminal and ERM motor pin.
HAPTIC 2 Click operates only with the PWM signal from the mikroBUS™ socket that drives the LC898302AXA and offers fully configurable drive and brake functions. Also, it has a jumper setting available labeled as MODE SEL used to choose between LRA or ERM motor to drive.
This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.