DRV8846
- PWM Microstepping Motor Driver
- Built-In Microstepping Indexer
- Up to 1/32 Microstepping
- Step/Direction Control
- Multiple Decay Modes
- Smart tune Technology
- Mixed Decay
- Slow Decay
- Fast Decay
- Configurable Off-Time PWM Chopping
- 10-, 20-, or 30-µs Off-Time
- Adaptive Blanking Time for Smooth Stepping
- 4- to 18-V Operating Supply Voltage Range
- 1.4-A (Full Scale (Max Drive) Current per H-Bridge (at 25°C)
- Low-Current Sleep Mode
- 3-Bit Torque DAC to Scale Motor Current
- Thermally Enhanced Surface Mount Package
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT)
The DRV8846 provides a highly-integrated stepper motor driver for cameras, printers, projectors, and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8846 is capable of driving up to 1.4-A full-scale output current (with proper heatsinking and TA = 25°C).
A simple STEP/DIR interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that smart tune, slow decay, fast decay, and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
Internal protection functions are provided for UVLO, overcurrent protection, short circuit protection, and overtemperature. Fault conditions are indicated via a nFAULT pin.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | DRV8846 Dual H-Bridge Stepper Motor Driver datasheet (Rev. A) | PDF | HTML | 2017. 3. 27 | |
| 애플리케이션 노트 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021. 10. 14 | ||
| 애플리케이션 노트 | Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) | PDF | HTML | 2021. 1. 19 | ||
| 백서 | How smart tune regulates current in stepper motors (Rev. A) | 2019. 3. 19 | |||
| Application brief | Smart Tuning for Efficient Stepper Driving | 2018. 11. 20 | |||
| Application brief | Small Motors in Large Appliances | 2018. 7. 20 | |||
| 기술 문서 | Spin your stepper automatically | PDF | HTML | 2016. 3. 3 | ||
| 추가 자료 | TM4C123x Stepper Motor Control Product Summary | 2015. 7. 6 |
설계 및 개발
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The DRV8846EVM is a platform (...)
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.