開發模組 (EVM) 的 GUI
DRV8308
- Three-Phase Brushless DC Motor Controller
- Digital Closed-Loop Speed Control with Programmable Gain and Filters
- Drives 6 N-Channel MOSFETs With Configurable 10- to 130-mA Gate Drive
- Integrated Commutation from Hall Sensors
- Timing Can Be Advanced/Delayed
- 120° or 180°-Sinusoidal Current Control
- Single Input Controls Motor Speed
- Operating Supply Voltage 8.5 to 32 V
- Flexible Configuration Methods
- Read Internal Non-Volatile Memory
- Read External EEPROM
- Write SPI
- Configurable Motor Current Limiter
- 5-V Regulator for Hall Sensors
- Low-power Standby Mode
- Integrated Overcurrent, Overvoltage, and Overtemperature Protection
The DRV8308 controls sensored brushless DC motors with advanced features and a simple input interface. As a predriver, it drives the gates of 6 external N-Channel MOSFETs with a configurable current of 10mA to 130mA for optimal switching characteristics.
The 3 motor phases are commutated according to the Hall sensor inputs. Once the motor reaches a consistent speed, the DRV8308 uses just 1 Hall sensor to minimize jitter caused by sensor mismatch. The Hall signal-to-drive timing can be advanced or delayed in 0.1% increments to optimize power efficiency. An optional 180° commutation mode drives sinusoidal current through the motor and minimizes audible noise and torque ripple. Peak motor current can be controlled by sizing a sense resistor.
The DRV8308 achieves closed-loop speed control to spin motors to a precise RPM across a wide range of load torques. The system matches motor speed—generated from an FG trace or the Hall sensors—to the reference frequency on pin CLKIN. The DRV8308 can also drive motors open-loop using a duty cycle command, from either a clock or register setting.
An assortment of protection features bolster system robustness, as the DRV8308 handles and reports overcurrent, overvoltage, undervoltage, and overtemperature.
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檢視所有 9 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8308 Brushless DC Motor Controller datasheet (Rev. B) | PDF | HTML | 2017年 11月 13日 |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021年 10月 14日 | |
| Application note | Hardware Design Considerations for an Electric Bicycle using BLDC Motor (Rev. B) | 2021年 6月 23日 | ||
| Application note | System Design Considerations for High-Power Motor Driver Applications | PDF | HTML | 2021年 6月 22日 | |
| Application note | Understanding Smart Gate Drive (Rev. D) | 2021年 3月 1日 | ||
| White paper | Power Electronics in Motor Drives: Where is it? (Rev. A) | 2019年 10月 1日 | ||
| Application note | Hardware Design Considerations for an Efficient Vacuum Cleaner Using a BLDC Moto (Rev. B) | PDF | HTML | 2019年 3月 6日 | |
| EVM User's guide | DRV8308 User's Guide (Rev. F) | 2018年 9月 12日 | ||
| Technical article | Simplifying gate driver design for brushed DC motors | PDF | HTML | 2015年 6月 30日 |
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)。
開發板
DRV8308EVM — 適用於三相無刷 DC 馬達預驅動器的 DRV8308 評估模組
The three-phase brushless motor pre-driver DRV8308 drives sensored brushless DC and brushless AC (BLAC) - often referred to as permanent magnet synchronous (PMSM). Aimed at 12V and 24V motors, this configurable pre-driver features an integrated digital speed loop with advanced commutation (...)
使用指南: PDF
參考設計
TIDA-00197 — 速度控制型 24V 無刷 DC 外轉機馬達參考設計
This advanced motor implements closed-loop speed control to maintain an exact RPM across the load torque profile. The magnetic rotor position is sensed by the DRV5013 Hall-effect sensors, and the DRV8308 controller decides when to drive the CSD88537ND FETs that energize the coils. No (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| VQFN (RHA) | 40 | 檢視選項 |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點