DRV8874
- N-channel H-bridge motor
driver
- Drives one bidirectional brushed DC motor
- Two unidirectional brushed DC motors
- Other resistive and inductive loads
- 4.5-V to 37-V operating supply voltage range
- Pin to pin
RDS(on) variants
- DRV8874: 200-mΩ (High-Side + Low-Side)
- DRV8876: 700-mΩ (High-Side + Low-Side)
- High output current capability
- DRV8874: 6-A Peak
- DRV8876: 3.5-A Peak
- Integrated current sensing and regulation
- Proportional current output (IPROPI)
- Selectable current regulation (IMODE)
- Cycle-by-cycle or fixed off time
- Selectable input control modes
(PMODE)
- PH/EN and PWM H-bridge control modes
- Independent half-bridge control mode
- Supports 1.8-V, 3.3-V, and 5-V logic inputs
- Ultra low-power sleep mode
- <1-µA @ VVM = 24-V, TJ = 25°C
- Spread spectrum clocking for low electromagnetic interference (EMI)
- Integrated protection features
- Undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Automatic retry or outputs latched off (IMODE)
- Thermal shutdown (TSD)
- Automatic fault recovery
- Fault indicator pin (nFAULT)
The DRV8874 is an integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. The family of devices come in pin-to-pin RDS(on) variants to support different loads with minimal design changes.
An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the external voltage reference pin, VREF, these devices can regulate the motor current during start-up and high-load events without interaction from a microcontroller.
A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, charge pump undervoltage, output overcurrent, and device overtemperature. Fault conditions are indicated on nFAULT.
View our full portfolio of brushed motor drivers on ti.com.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation 数据表 (Rev. A) | PDF | HTML | 2019-5-28 | ||
| 应用简报 | 集成电流感测的优势 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2022-10-12 | |
| 应用手册 | 使用电机驱动器驱动螺线管 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2022-7-25 | |
| 应用手册 | 有刷电机和步进电机电流调节的配置方法 (Rev. B) | 英语版 (Rev.B) | PDF | HTML | 2021-11-29 | ||
| 技术文章 | Overcoming design challenges for brushed-DC motors in smart sanitation systems | PDF | HTML | 2020-7-1 | |||
| 技术文章 | Automating smart home blinds, shades and shutters with motor drivers | PDF | HTML | 2020-1-2 | |||
| 技术文章 | Automating smart home systems with motor drivers | PDF | HTML | 2019-10-24 | |||
| 技术文章 | Using brushed motors to improve battery life and reliability in vacuum robots | PDF | HTML | 2019-7-17 | |||
| 应用简报 | Small Motors in Large Appliances | 2018-7-20 | ||||
| 应用手册 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018-7-6 | ||||
| 应用简报 | PowerPAD® 轻松实现 (Rev. B) | 2004-5-12 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
DRV8874EVM — DRV8874 单通道 H 桥电机驱动器评估模块
DRV8874 评估模块 (EVM) 可用于轻松评估 DRV8874 器件。
DRV8874 器件是一款集成式 H 桥驱动器，适用于有刷直流和电磁阀应用。使用此评估模块，可以将器件配置为 PWM、相位/使能端或独立半桥控制模式。板载 MSP430FR2100 可以为 DRV8874EVM 的输入引脚提供 PWM 信号。PWM 信号的占空比通过板载电位器来设置。
更多有关该评估模块的信息，请参阅《DRV8874EVM 用户指南》。
SLVC747 — DRV887xEVM Firmware
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
订购和质量
推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。