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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV8874 H-Bridge Motor Driver With Integrated Current Sense and Regulation datasheet (Rev. A) | PDF | HTML | 2019/5/28 | ||
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 2022/6/20 | |||
| 應用說明 | Using DRV to Drive Solenoids (Rev. A) | PDF | HTML | 2022/4/24 | |||
| 應用說明 | Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) | PDF | HTML | 2021/1/19 | |||
| 技術文章 | Overcoming design challenges for brushed-DC motors in smart sanitation systems | PDF | HTML | 2020/7/1 | |||
| 技術文章 | Automating smart home blinds, shades and shutters with motor drivers | PDF | HTML | 2020/1/2 | |||
| 技術文章 | Automating smart home systems with motor drivers | PDF | HTML | 2019/10/24 | |||
| 技術文章 | Using brushed motors to improve battery life and reliability in vacuum robots | PDF | HTML | 2019/7/17 | |||
| Application brief | Small Motors in Large Appliances | 2018/7/20 | ||||
| 應用說明 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018/7/6 | ||||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 2004/5/12 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DRV8874EVM — DRV8874 單全橋馬達驅動器評估模組
DRV8874 評估模組 (EVM) 可輕鬆評估 DRV8874 裝置。
DRV8874 裝置是適合有刷 DC 與電磁閥應用的整合式全橋驅動器。評估模組可將裝置配置為 PWM、相位/啟用或獨立半橋控制模式。電路板上的 MSP430FR2100 可為 DRV8874EVM 的輸入接腳提供 PWM 訊號。PWM 訊號的工作週期由電路板上的電位計設定。
如需有關此評估模組的詳細資訊，請參閱 DRV8874EVM 使用指南。
SLVC747 — DRV887xEVM Firmware
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。