DRV8256
- N-channel H-bridge motor driver
- Drives one bidirectional brushed-DC motor
- Two unidirectional brushed DC motors
- Integrated current sensing and regulation
- 4.5 V to 48 V Operating supply voltage range
- Multiple control interface options
- PHASE/ENABLE (PH/EN)
- PWM (IN/IN)
- Smart tune, fast and mixed decay options
- Low RDS(ON): 165 mΩ HS + LS at 24 V, 25°C
- High Output Current Capability: 6.4-A peak
- Limits inrush current of brushed-DC motors
- Configurable Off-Time PWM Chopping
- 7, 16, 24 or 32 µs
- Supports 1.8 V, 3.3 V, 5.0 V logic inputs
- Low-current sleep mode (2 µA)
- Spread spectrum clocking for low EMI
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)
The DRV8256E/P devices are single H-bridge motor drivers for a wide variety of industrial applications. The devices integrate an N-channel H-bridge, charge pump regulator, current sensing and regulation, and protection circuitry.
Integrated current sensing allows the driver to regulate the motor inrush current during start up and high load events. A current limit can be set with an adjustable external voltage reference. The integrated current sensing uses an internal current mirror architecture, removing the need for a large power shunt resistor, saving board area and reducing system cost. A low-power sleep mode is provided to achieve ultra-low quiescent current draw by shutting down most of the internal circuitry.
Internal protection features are provided for supply undervoltage lockout (UVLO), charge pump undervoltage (CPUV), output overcurrent (OCP), and device overtemperature (TSD). Fault conditions are indicated on nFAULT.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8256E/P H-Bridge Motor Driver With Integrated Current Sense and Smart Tune Technology datasheet (Rev. A) | PDF | HTML | 2021年 4月 12日 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 2024年 4月 30日 | |
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 2022年 6月 20日 |
設計與開發
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DRV8256EEVM — DRV8256 相/啓用控制介面全橋馬達驅動器評估模組
The DRV8256E evaluation mode (EVM) allows easy evaluation of the DRV8256E device.
The DRV8932E integrates two N-channel power MOSFET H-bridges and integrated current sense and regulation circuirty. The DRV8256E device operates off a single power supply and support a wide input supply range from 4.5 (...)
DRV8256PEVM — DRV8256 PWM 控制介面全橋馬達驅動器評估模組
The DRV8256P evaluation module (EVM) allows easy evaluation of the DRV8256P device.
The DRV8932P integrates two N-channel power MOSFET H-bridges and integrated current sense and regulation circuirty. The DRV8256P device operates off a single power supply and support a wide input supply range from (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
| VQFN (RGE) | 24 | Ultra Librarian |
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
- 認證摘要
- 進行中持續性的可靠性監測
- 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。