支援軟體
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
The DRV8874 evaluation module (EVM) allows easy evaluation of the DRV8874 device.
The DRV8874 device is an integrated H-bridge driver for brushed DC and solenoid applications. The evaluation module allows the device to be configured for PWM, phase/enable, or independent half-bridge control modes. An (...)
使用指南: PDF
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 16 | 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
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。