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
| 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 | DRV10974 12-V, Three-Phase, Sensorless BLDC Motor Driver datasheet (Rev. E) | PDF | HTML | 2021/3/4 | ||
| Product overview | Appliance Fan and Pump Test Data Versus Competitor A | PDF | HTML | 2024/5/2 | |||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 使用指南 | DRV10974 Tuning Guide | 2018/4/11 | ||||
| 應用說明 | Tuning Lead Angle in DRV10x Sensorless BLDC Drivers | PDF | HTML | 2012/10/9 |
設計與開發
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TIDA-01619 — 22 mm 直徑和熱增強型三相 BLDC 馬達驅動器參考設計
TIDA-01619 可為操作範圍為 4.4V 至 18V 的系統提供三相無刷 DC (BLDC) 馬達驅動器解決方案。
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 |