DRV8849
- Dual stepper motor driver
- STEP/DIR interface
- Up to 1/256 microstepping indexer
- 4.5 to 38-V Operating supply voltage range
- 900 mΩ HS + LS RDS(ON) at 24 V, 25°C
- 1.5 A full-scale, 1.1 A rms current per H-bridge
- Integrated current sense functionality
- ±5% full-scale current accuracy
- No sense resistors required
- Smart tune decay technology
- Configurable off-time PWM chopping in Smart tune
- 8-µs, 16-µs, or 32-µs
- Supports 3.3-V, 5.0-V logic inputs
- Low-current sleep mode (1.3 µA)
- Protection features for each Stepper
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)
The DRV8849 is a dual stepper motor driver for industrial and consumer applications. The device is fully integrated with four N-channel power MOSFET H-bridge drivers, one microstepping indexer for each stepper, and integrated current sensing. The DRV8849 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design).
The DRV8849 uses an internal current sense architecture to eliminate the need for four external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune decay mode. Smart tune automatically adjusts for desired current regulation, compensates for motor variation and aging effects and reduces audible noise and vibration from the motor.
Simple STEP/DIR interfaces allow an external controller to manage the direction and step rate of the stepper motors. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by one nFAULT pin for each stepper.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8849: 38 V, 1.5 A Dual Stepper Driver with Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and Smart Tune datasheet (Rev. A) | PDF | HTML | 2023/07/13 |
| Product overview | Brushed and Stepper Motor Drivers in Video Surveillance | PDF | HTML | 2024/02/22 | |
| Product overview | Two New Dual-Stepper Motor Drivers | PDF | HTML | 2024/02/22 | |
| Certificate | DRV8849EVM EU RoHS Declaration of Conformity (DoC) | 2023/03/28 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DRV8849EVM — 스마트 튜닝 및 통합 전류 감지를 지원하는 듀얼 스테퍼 모터 드라이버용 DRV8849 평가 모듈
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| VQFN (RHH) | 36 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.