Texas Instruments DRV8885 1.5A步进电机驱动器
Texas Instruments DRV8885 1.5A步进电机驱动器是设计用于工业设备应用的步进电机驱动器。此器件具有两个 N 沟道功率 MOSFET H 桥驱动器、一个微步进分度器以及集成电流感测功能。DRV8885 能够驱动高达 1.5A 的满量程输出电流或 1.0Arms 输出电流。DRV8885 集成了电流感测功能，消除了对两个外部感测电阻的需求。STEP/DIR 引脚提供简单的控制接口。该器件可配置为多种步进模式，从全步进模式到1/16步进模式。凭借专用的 nSLEEP 引脚，该器件可提供一种低功耗的休眠模式，从而实现超低静态电流待机。具有内部保护功能，以提供欠压、充电泵故障、过流、短路和过热保护。nFAULT引脚可提示故障条件。
特性
- PWM micro-stepping stepper motor driver
- Up to 1/16 micro-stepping
- Non-circular and standard ½ step modes
- Integrated current sense functionality
- No sense resistors required
- ±6.25% full-scale current accuracy
- Slow and mixed decay options
- 8.0 to 37V operating supply voltage range
- 0.86Ω HS + LS at 24V, 25°C low RDS(ON)
- High current capacity
- 1.5A full scale per bridge
- 1.0Arms per bridge
- Low-current sleep mode (20μA)
- Fixed off-time PWM chopping
- Simple STEP/DIR interface
- Small package and footprint
- 24 HTSSOP (PowerPAD)
- Protection features
- VM Undervoltage Lockout (UVLO)
- Charge Pump Undervoltage (CPUV)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault condition indication pin (nFAULT)
应用
- Multi-function printers and scanners
- Laser beam printers
- 3D printers
- Automatic teller and money handling machines
- Video security cameras
- Office automation machines
- Factory automation and robotics
Related Development Tool
Texas Instruments DRV8885EVM步进电机驱动器评估模块
演示了 DRV8885 的集成电流感应功能和性能。
Simplified Schematic
发布日期: 2016-07-11
| 更新日期: 2022-03-11