DRV8845
- Integrates four H-bridges
- Can drive different configurations -
- Two stepper motors
- Four brushed-DC motors
-
Three brushed-DC motors
- One stepper and two brushed-DC motors
-
One stepper and one brushed-DC motor
- Footprint and software compatible with similar drivers from other vendors
- 4.5-V to 38-V Operating supply voltage range
- Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
- 1.5-A full-scale current Per Bridge
- Industry standard PHASE/Ixx Interface
-
Synchronous rectification
-
Full, 1/2 and 1/4 step operation for stepper motors
-
Forward, reverse and coast modes for DC motors
-
Smart tune decay for smooth and quiet operation
-
Supports 3.3 V and 5 V logic inputs
-
Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. The DRV8845 includes pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps; and DC motors in forward, reverse, and coast modes.
The PWM current regulator uses the smart tune decay mode for motor audible noise and vibration reduction, increased accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.
Protection features include thermal shutdown with hysteresis (OTSD), undervoltage lockout (UVLO) and overcurrent protection (OCP). Special power up sequencing is not required.
The DRV8845 is supplied in a 6 mm x 6 mm, 36 pin QFN package with exposed pad for enhanced thermal performance.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8845: 38 V, 1.5 A Quad H-Bridge Motor Driver with Smart Tune Technology datasheet (Rev. A) | PDF | HTML | 2023/12/21 |
| 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 | DRV8845EVM 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.
DRV8845EVM — 스마트 튜닝 기술을 지원하는 쿼드 H 브리지 모터 드라이버용 DRV8845 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RHH) | 36 | Ultra Librarian |
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.