产品详细信息
参数
封装|引脚|尺寸
特性
- AEC-Q100 Qualified for Automotive
- Up to 1/256 microstepping
- Integrated current sense functionality
- No sense resistors required
- Smart tune decay technology, Fixed slow, and mixed decay options
- 4.5 to 45-V Operating supply voltage range
- Pin to pin RDS(ON) variants:
- DRV8889/A-Q1: 900 mΩ HS + LS at 25°C
- DRV8899-Q1: 1200 mΩ HS + LS at 25°C - High current capacity per bridge
- DRV8889/A-Q1: 2.4-A peak, 1.5-A full-scale
- DRV8899-Q1: 1.7-A peak, 1-A full-scale
- TRQ_DAC bits to scale full-scale current
- Configurable off-time PWM chopping
- 7-µs, 16-µs, 24-µs, or 32-µs.
- Simple STEP/DIR interface
- SPI with daisy chain support
- Low-current sleep mode (2 µA)
- Programmable output slew rate
- Spread spectrum clocking to minimize EMI
- Protection features
- VM undervoltage lockout
- Overcurrent protection
- Open load detection
- Overtemperature warning and shutdown
- Undertemperature warning
- Fault condition indication pin (nFAULT)
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描述
The DRV8899-Q1 is a fully integrated stepper motor driver, supporting up to 1 A full scale current with an internal microstepping indexer, smart tune decay technology, and integrated current sensing. With a simple step/dir interface to manage the direction and step rate, DRV8899-Q1 supports up to 1/256 levels of microstepping to enable a smooth motion profile. Integrated current sensing eliminates the need for two external resistors, saving board space and cost. DRV8899-Q1 provides 8 decay mode options including: smart tune, slow, and mixed decay options. Smart tune automatically adjusts for optimal current regulation performance and compensates for any motor variation and aging effects. The device also includes an integrated torque DAC which allows for the controller to scale the output current through SPI without needing to scale the VREF voltage reference. A low-power sleep mode is provided for very low standby current using an nSLEEP pin. The device features full duplex, 4-wire synchronous SPI communication, with daisy chain support for up to 63 devices connected in series, for configurability and detailed fault reporting.
View our full portfolio of stepper motor drivers on ti.com
功能相同,但与相比较的设备引脚不同或参数不等效:
与相比较的设备类似但功能不等效:
技术文档
设计与开发
有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。硬件开发
说明
DRV8899-Q1 评估模块 (EVM) 可轻松评估 DRV8899-Q1 器件。DRV8899-Q1 器件是一款集成双路 H 桥驱动器,适用于汽车步进电机应用。
该评估模块允许用户针对器件的所有功能模式(包括低至 1/256 步进分辨率的微步进、适用于智能调优的多种衰减模式)对器件进行配置。板载 MSP430F2617 提供 STEP、DIR(方向)和 SPI 信号,以控制 DRV8899-Q1。这些设置可以在适用于此 EVM 的可下载器件 GUI 中进行配置。
有关该评估模块的更多信息,请参阅《DRV8899-Q1EVM 硬件和 GUI 用户指南》。
特性
- 4.5V 至 45V 工作电压范围
- 全步进和低至 1/256 的微步进模式
- 针对步进调优的可编程衰减模式,包括动态衰减和纹波控制智能调优模式
- 集成式电流感应功能
- 支持菊花链的 SPI
设计工具和仿真
CAD/CAE 符号
封装 | 引脚 | 下载 |
---|---|---|
VQFN (RGE) | 24 | 了解详情 |
订购与质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/FIT 估算
- 材料成分
- 认证摘要
- 持续可靠性监测
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