支持軟件
數(shù)據(jù)表
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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評(píng)估板
DRV8874EVM — DRV8874 單通道 H 橋電機(jī)驅(qū)動(dòng)器評(píng)估模塊
DRV8874 評(píng)估模塊 (EVM) 可用于輕松評(píng)估 DRV8874 器件。
DRV8874 器件是一款集成式 H 橋驅(qū)動(dòng)器，適用于有刷直流和電磁閥應(yīng)用。使用此評(píng)估模塊，可以將器件配置為 PWM、相位/使能端或獨(dú)立半橋控制模式。板載 MSP430FR2100 可以為 DRV8874EVM 的輸入引腳提供 PWM 信號(hào)。PWM 信號(hào)的占空比通過板載電位器來設(shè)置。
更多有關(guān)該評(píng)估模塊的信息，請(qǐng)參閱《DRV8874EVM 用戶指南》。
用戶指南: PDF
| 封裝 | 引腳 | CAD 符號(hào)、封裝和 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
訂購(gòu)和質(zhì)量
包含信息：
- RoHS
- REACH
- 器件標(biāo)識(shí)
- 引腳鍍層/焊球材料
- MSL 等級(jí)/回流焊峰值溫度
- MTBF/時(shí)基故障估算
- 材料成分
- 鑒定摘要
- 持續(xù)可靠性監(jiān)測(cè)
包含信息：
- 制造廠地點(diǎn)
- 封裝廠地點(diǎn)
推薦產(chǎn)品可能包含與 TI 此產(chǎn)品相關(guān)的參數(shù)、評(píng)估模塊或參考設(shè)計(jì)。