DRV8704
- Pulse Width Modulation (PWM) Motor Driver
- Drives External N-Channel MOSFETs
- PWM Control Interface for Dual DC Motors
- Supports 100% PWM Duty Cycle
- 8-V to 52-V Operating Supply Voltage Range
- Adjustable Gate Drive (4 Levels)
- 50-mA to 200-mA Source Current
- 100-mA to 400-mA Sink Current
- Integrated PWM Current Regulation
- Flexible Decay Modes
- Automatic Mixed Decay Mode
- Slow Decay
- Fast Decay
- Mixed Decay (Adjustable Percent Fast)
- Highly Configurable SPI
- Torque DAC to Digitally Scale Current
- Low-Current Sleep Mode (65 µA)
- 5-V, 10-mA LDO Regulator
- Thermally-Enhanced Surface-Mount Package
- 38-Pin HTSSOP (PowerPAD)
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Gate Driver Fault (PDF)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT)
- Fault Diagnostics through SPI
The DRV8704 is a dual-brushed motor controller for industrial equipment applications. The device controls external N-channel MOSFETs configured as two H-bridges.
Motor current can be accurately controlled using adaptive blanking time and various current decay modes, including an automatic mixed decay mode.
A simple PWM interface allows easy interfacing to controller circuits. A SPI serial interface is used to program the device operation. Output current (torque), gate drive settings, and decay mode are all programmable through a SPI serial interface.
Internal shutdown functions are provided for overcurrent protection, short-circuit protection, gate driver faults, undervoltage lockout (UVLO), and overtemperature. Fault conditions are indicated by a FAULTn pin, and each fault condition is reported by a dedicated bit through SPI.
The DRV8704 is packaged in a PowerPAD™ 38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS & no Sb/Br).
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 | DRV8704 52-V Dual H-Bridge PWM Gate Driver datasheet | PDF | HTML | 2015/10/28 | ||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 應用說明 | Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) | 2018/8/20 | ||||
| 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)。
DRV8704EVM — 雙有刷 DC 馬達閘極驅動器評估模組
DRV8704 評估模組 (EVM) 展示了德州儀器 DRV8704 積體電路的整合式電流感測功能和性能。此 EVM 包含 DRV8704（用於控制兩個有刷馬達）、簡單的跳線連接方案（用於繞送 DRV8704 輸入）、TLC555CD（用於提供可變的板載 PWM 訊號）以及兩個 10x1 100 密耳排針（允許選擇對接至任何 MSP430 Launchpad，以讀取/寫入 SPI 命令並提供驅動器輸入）。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (DCP) | 38 | 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。