DRV8871
- H-Bridge Motor Driver
- Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
- Wide 6.5-V to 45-V Operating Voltage
- 565-mΩ Typical RDS(on) (HS + LS)
- 3.6-A Peak Current Drive
- PWM Control Interface
- Current Regulation Without a Sense Resistor
- Low-Power Sleep Mode
- Small Package and Footprint
- 8-Pin HSOP With PowerPAD™
- 4.9 × 6 mm
- Integrated Protection Features
- VM Undervoltage Lockout (UVLO)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Automatic Fault Recovery
The DRV8871 device is a brushed-DC motor driver for printers, appliances, industrial equipment, and other small machines. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that can control motors bidirectionally with up to 3.6-A peak current. The inputs can be pulse-width modulated (PWM) to control motor speed, using a choice of current-decay modes. Setting both inputs low enters a low-power sleep mode.
The DRV8871 device has advanced current-regulation circuitry that does not use an analog voltage reference or external sense resistor. This novel solution uses a standard low-cost, low-power resistor to set the current threshold. The ability to limit current to a known level can significantly reduce the system power requirements and bulk capacitance needed to maintain stable voltage, especially for motor startup and stall conditions.
The device is fully protected from faults and short circuits, including undervoltage (UVLO), overcurrent (OCP), and overtemperature (TSD). When the fault condition is removed, the device automatically resumes normal operation.
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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 | DRV8871 3.6-A Brushed DC Motor Driver With Internal Current Sense (PWM Control) datasheet (Rev. B) | PDF | HTML | 2016/7/5 | ||
| 應用說明 | Understanding Motor Driver Current Ratings (Rev. A) | PDF | HTML | 2024/7/5 | |||
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 2022/6/20 | |||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 應用說明 | Calculating Power Dissipation for a H-Bridge or Half Bridge Driver (Rev. A) | PDF | HTML | 2021/7/22 | |||
| 技術文章 | Overcoming design challenges for brushed-DC motors in smart sanitation systems | PDF | HTML | 2020/7/1 | |||
| 應用說明 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018/7/6 | ||||
| 技術文章 | Evolution of the brushed DC driver | PDF | HTML | 2015/10/26 | |||
| 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)。
DRV8871EVM — DRV8871 H 橋 PWM 馬達驅動器評估模組
DRV8871 評估模組展示德州儀器 DRV8871 積體電路的功能與性能。EVM 包括 5V 穩壓器和 PWM 產生器。需要單一電源來評估 DRV8871。
TIDA-00786 — 超小型有刷 DC 馬達電流調節 TI 參考設計
TIDA-00786 是一款佔用空間小巧的有刷 DC 馬達控制器，具有固定的 100% 占空比速度輸入和可變電流調整功能。 DRV8871 的整合式電流感測功能可設計使用標準電位計，讓使用者能夠快速改變電流限流位準，從而適用於一系列可由 12V 至 24V 輸入供電的馬達。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HSOIC (DDA) | 8 | 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。