DRV10974
- Input Voltage Range: 4.4 V to 18 V
- Total Driver H + L rDS(on): 750 mΩ (Typical) at TA = 25°C
- Phase Drive Current: 1-A Continuous (1.5-A Peak)
- 180° Sinusoidal Commutation for Optimal Acoustic Performance
- Resistor-Configurable Lead Angle
- Resistor-Configurable Current Limit
- Soft Start With Resistor-Configurable Acceleration Profile
- Built-In Current Sense to Eliminate External Current-Sense Resistor
- Proprietary Sensorless Control Without Motor Center Tap
- Simple User Interface:
- One-Pin Configuration for Start-Up
- PWM Input Designates Magnitude of Voltage Applied to Motor
- Open-Drain FG Output Provides Speed Feedback
- Pin for Forward and Reverse Control
- Fully Protected:
- Motor-Lock Detect and Restart
- Overcurrent, Short-Circuit, Overtemperature, Undervoltage
The DRV10974 device is a three-phase sensorless motor driver with integrated power MOSFETs, which can provide continuous drive current up to 1 A (rms). The device is designed for cost-sensitive, low-noise, and low-external-component-count applications.
The DRV10974 device uses a proprietary sensorless control scheme to provide dependable commutation. The 180° sinusoidal commutation significantly reduces pure tone acoustics that are typical with 120° (trapezoidal) commutation. The DRV10974 spin-up is configured using a single external low-power resistor. The current limit can be set by an external low-power resistor.
The DRV10974 device provides for simple control of motor speed by applying a PWM input to control the magnitude of the drive voltage, or by driving the PWM pin with an analog voltage and monitoring the FG pin for speed feedback.
The DRV10974 device includes a number of features to improve efficiency. The resistor-configurable lead angle allows the user to optimize the driver efficiency by aligning the phase current and the phase BEMF. In addition, the use of low-rDS(on) MOSFETs helps to conserve power while the motor is being driven.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV10974 12-V, Three-Phase, Sensorless BLDC Motor Driver datasheet (Rev. E) | PDF | HTML | 2021年 3月 4日 |
| Product overview | Appliance Fan and Pump Test Data Versus Competitor A | PDF | HTML | 2024年 5月 2日 | |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021年 10月 14日 | |
| User guide | DRV10974 Tuning Guide | 2018年 4月 11日 | ||
| Application note | Tuning Lead Angle in DRV10x Sensorless BLDC Drivers | PDF | HTML | 2012年 10月 9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)。
TIDA-01619 — 22 mm 直徑和熱增強型三相 BLDC 馬達驅動器參考設計
此設計採用 DRV10974 馬達驅動器，能夠新增 MCU 以實現閉合迴路速度控制。DRV10974 無需霍爾感測器即可提供無感測器整流，只需 6 個外部被動元件即可實現低成本解決方案，透過 180° 正弦整流系統可實現最佳效率與低雜訊。
此參考設計提供 22-mm 直徑電路板設計與熱增強（採用雙層佈局和 2 盎司覆銅厚度）相關指南。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
| WQFN (RUM) | 16 | Ultra Librarian |
訂購與品質
- 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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點