支援軟體
SLVC747 — DRV887xEVM Firmware
支援產品和硬體
產品
有刷 DC (BDC) 馬達驅動器
硬體開發
開發板
- DRV8874-Q1EVM — DRV8874-Q1 單全橋馬達驅動器評估模組
- DRV8874EVM — DRV8874 單全橋馬達驅動器評估模組
- DRV8876-Q1EVM — DRV8876-Q1 單全橋馬達驅動器評估模組
- DRV8876EVM — DRV8876 單全橋馬達驅動器評估模組
DRV8874
- N-channel H-bridge motor driver
- Drives one bidirectional brushed DC motor
- Two unidirectional brushed DC motors
- Other resistive and inductive loads
- 4.5-V to 37-V operating supply voltage range
- Pin to pin RDS(on) variants
- DRV8874: 200-mΩ (High-Side + Low-Side)
- DRV8876: 700-mΩ (High-Side + Low-Side)
- High output current capability
- DRV8874: 6-A Peak
- DRV8876: 3.5-A Peak
- Integrated current sensing and regulation
- Proportional current output (IPROPI)
- Selectable current regulation (IMODE)
- Cycle-by-cycle or fixed off time
- Selectable input control modes (PMODE)
- PH/EN and PWM H-bridge control modes
- Independent half-bridge control mode
- Supports 1.8-V, 3.3-V, and 5-V logic inputs
- Ultra low-power sleep mode
- <1-µA @ VVM = 24-V, TJ = 25°C
- Spread spectrum clocking for low electromagnetic interference (EMI)
- Integrated protection features
- Undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Automatic retry or outputs latched off (IMODE)
- Thermal shutdown (TSD)
- Automatic fault recovery
- Fault indicator pin (nFAULT)
The DRV8874 is an integrated motor driver with N-channel H-bridge, charge pump, current sensing and proportional output, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. The family of devices come in pin-to-pin RDS(on) variants to support different loads with minimal design changes.
An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the external voltage reference pin, VREF, these devices can regulate the motor current during start-up and high-load events without interaction from a microcontroller.
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, charge pump undervoltage, output overcurrent, and device overtemperature. Fault conditions are indicated on nFAULT.
View our full portfolio of brushed motor drivers on ti.com.
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開發板
DRV8874EVM — DRV8874 單全橋馬達驅動器評估模組
DRV8874 評估模組 (EVM) 可輕鬆評估 DRV8874 裝置。
DRV8874 裝置是適合有刷 DC 與電磁閥應用的整合式全橋驅動器。評估模組可將裝置配置為 PWM、相位/啟用或獨立半橋控制模式。電路板上的 MSP430FR2100 可為 DRV8874EVM 的輸入接腳提供 PWM 訊號。PWM 訊號的工作週期由電路板上的電位計設定。
如需有關此評估模組的詳細資訊，請參閱 DRV8874EVM 使用指南。
使用指南: PDF
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
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
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 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。