DRV8251
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N-channel H-bridge brushed DC motor driver
- 4.5-V to 48-V operating supply voltage range
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Pin-to-pin, RDS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)
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DRV8870: 6.5-V to 45-V, 565-mΩ, shunt
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DRV8251: 4.5-V to 48-V, 450-mΩ, shunt
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DRV8251A: 4.5-V to 48-V, 450-mΩ, mirror
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DRV8231: 4.5-V to 33-V, 600-mΩ, shunt
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DRV8231A: 4.5-V to 33-V, 600-mΩ, mirror
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- High output current capability: 4.1-A Peak
- PWM control interface
- Supports 1.8-V, 3.3-V, and 5-V logic inputs
- Integrated current regulation
- Low-power sleep mode
- <1-µA at VVM = 24-V, TJ = 25°C
- Small package and footprint
- 8-Pin HSOP with PowerPAD™, 4.9 × 6.0 mm
- Integrated protection features
- VM undervoltage lockout (UVLO)
- Latched overcurrent protection (OCP)
- Thermal shutdown (TSD)
The DRV8251 device is an integrated motor driver with N-channel H-bridge, charge pump, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving.
The DRV8251 implements a current regulation feature by comparing the analog input VREF and the voltage across a current-sense shunt resistor on the ISEN pin. The ability to limit current can significantly reduce large currents during motor startup and stall conditions.
A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature.
The DRV8251 is part of a family of devices which come in pin-to-pin, scalable RDS(on) and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio of brushed motor drivers on ti.com.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8251 4.1-A Brushed DC Motor Driver with Integrated Current Regulation datasheet | PDF | HTML | 2020年 11月 18日 |
| Certificate | DRV8251EVM EU RoHS Declaration of Comformity (DoC) | 2021年 11月 9日 | ||
| User guide | DRV8251 Evaluation Module User's Guide | 2021年 5月 25日 | ||
| Technical article | Using brushed motors to improve battery life and reliability in vacuum robots | PDF | HTML | 2019年 7月 17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)。
DRV8251EVM — DRV8251 馬達驅動器評估模組
DRV8251 評估模組 (EVM) 可用於輕鬆評估 DRV8251 裝置。EVM 已編程並配置為可立即使用並開始轉動馬達。
DRV8251 是額定電壓為 4.5V 至 48-V 的單全橋驅動器，可驅動高達 3.7 A 電流。EVM 可輕鬆控制 DRV8251 且無需滿足 GUI 的需求。EVM 配備兩個電位計，可調整控制訊號佔空比。如有需要，可中斷板載 MCU 連接，以透過外部控制器控制 DRV8251。
BRDWY-3P-BA620XX — 適用按摩椅應用的 Broadway Technology Jiangsu BA620XX 控制板
Broadway Technology (Jiangsu) BA620XX 按摩椅控制電路板以 MSPM0G1106 裝置作為核心 MCU，控制 DRV8251 及其他馬達驅動裝置，並為 2D 與 3D 按摩椅提供核心電子控制系統。
BA62038 支援 5 向馬達、氣泵、加熱裝置控制、10 向氣閥控制及透過序列通訊的多通道控制電路板。
BA62042 支援 8 向馬達、氣泵、加熱裝置控制、8 向氣閥控制及透過序列通訊的多通道控制電路板。
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HSOIC (DDA) | 8 | 檢視選項 |
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
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
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。