DRV8873
- H-Bridge Motor Driver
- Drives One DC Motor, One Winding of a Stepper Motor, or Solenoid Loads
- 4.5-V to 38-V Operating Voltage Range
- 10-A Peak Current Drive
- Low HS + LS RDS(ON)
- 150 mΩ at TJ = 25°C, 13.5 V
- 250 mΩ at TJ = 150°C, 13.5 V
- Current Mirror for Output Current Sensing
- Configurable Control Interface
- PH/EN
- PWM (IN1/IN2)
- Independent Half-Bridge Control
- Supports 1.8-V, 3.3-V, 5-V Logic Inputs
- SPI or Hardware Interface Options
- Low-Power Sleep Mode (10 µA)
- Small Package and Footprint
- 24 HTSSOP PowerPAD™ IC Package
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Charge Pump Undervoltage (CPUV)
- Overcurrent Protection (OCP)
- Output short to battery and short to ground protection
- Open Load Detection
- Thermal Shutdown (TSD)
- Fault Condition Output (nFAULT / SPI)
The DRV8873 device is an integrated driver IC for driving a brushed DC motor in industrial applications. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that drive motors bi-directionally with up to 10-A peak current. The device operates from a single power supply and supports a wide input supply range from 4.5 V to 38 V.
A PH/EN or PWM interface allows simple interfacing to controller circuits. Alternatively, independent half-bridge control is available to drive two solenoid loads.
A current mirror allows the controller to monitor the load current. This mirror approximates the current through the high-side FETs, and does not require a high-power resistor for sensing the current.
A low-power sleep mode is provided to achieve very-low quiescent current draw by shutting down much of the internal circuitry. Internal protection functions are provided for undervoltage lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature. Fault conditions are indicated on an nFAULT pin and through the SPI registers.
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 | DRV8873 H-Bridge Motor Driver datasheet | PDF | HTML | 2018/6/11 | ||
| 證書 | DRV8873HEVM EU Declaration of Conformity (DoC) | PDF | HTML | 2023/7/12 | |||
| 證書 | DRV8873SEVM EU Declaration of Conformity (DoC) | 2023/7/11 | ||||
| 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 | Daisy Chain Implementation for Serial Peripheral Interface (Rev. A) | 2021/4/7 | ||||
| 技術文章 | Overcoming design challenges for brushed-DC motors in smart sanitation systems | PDF | HTML | 2020/7/1 | |||
| 技術文章 | Helping physicians achieve faster, more accurate patient diagnoses with molecular | PDF | HTML | 2020/5/20 | |||
| 技術文章 | Automating smart home blinds, shades and shutters with motor drivers | PDF | HTML | 2020/1/2 | |||
| 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
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DRV8873HEVM — 具有硬體介面和整合電流感測功能的 10A H 橋具馬達驅動器評估模組
DRV8873 是適合工業與消費者應用的雙步進馬達驅動器。本裝置配備 10A 峰值電流能力與 4.5-38V 電壓範圍，支援廣泛的應用。PH/EN 或 PWM 介面可輕鬆介接控制器電路，同時允許獨立 ½ 橋接控制驅動兩個電磁閥負載。
電流鏡透過高壓側 FET 近似於電流，不需要感測電阻器。
藉由關閉大部分內部電路，提供低功率睡眠模式以實現極低的靜態電流消耗。
針對欠電壓鎖定，充電幫浦故障，過電流保護，短路保護和過熱提供內部保護功能，並透過 nFAULT 接腳和 SPI 暫存器指示故障狀況。
DRV8873SEVM — 具有 SPI 介面和整合式電流感測的 10A 全橋馬達驅動器評估模組
DRV8873 是適合工業與消費者應用的雙步進馬達驅動器。本裝置配備 10A 峰值電流能力與 4.5-38V 電壓範圍，支援廣泛的應用。
PH/EN 或 PWM 介面可輕鬆介接控制器電路，同時允許獨立 ½ 橋接控制驅動兩個電磁閥負載。電流鏡透過高壓側 FET 近似於電流，不需要感測電阻器。
藉由關閉大部分內部電路，提供低功率睡眠模式以實現極低的靜態電流消耗。
針對欠電壓鎖定、電荷泵故障、過電流保護、短路保護和過熱，提供內部保護功能，並透過 nFAULT 接腳和 SPI 暫存器指示故障狀況。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 24 | 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。