DRV8424
- PWM microstepping stepper motor driver
- Simple STEP/DIR interface
- Up to 1/256 microstepping indexer
- Integrated current sense functionality
- No sense resistors required
- ±5% full-scale current accuracy
- Smart tune decay technology, fixed slow, and mixed decay options
- 4.5 to 33-V operating supply voltage range
- Low RDS(ON):
- DRV8424: 330 mΩ HS + LS at 24 V, 25°C
- DRV8425: 550 mΩ HS + LS at 24 V, 25°C
- High current capacity per bridge
- DRV8424: 4 A peak, 2.5 A full-scale, 1.8 A rms
- DRV8425: 3.2 A peak, 2 A full-scale, 1.4 A rms
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Pin to pin compatible with -
- Configurable off-time PWM chopping
- 7-µs, 16-µs, 24-µs, or 32-µs.
- Supports 1.8-V, 3.3-V, 5.0-V Logic Inputs
- Low-Ccrrent sleep mode (2 µA)
- Spread spectrum clocking for low electromagnetic interference (EMI)
- Small package and footprint
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)
The DRV8424/25 are stepper motor drivers for industrial and consumer applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8424 is capable of driving up to 2.5-A full-scale output current; and the DRV8425 is capable of driving up to 2-A full-scale output current (dependent on PCB design).
The DRV8424/25 use an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The devices use an internal PWM current regulation scheme selectable between smart tune, slow and mixed decay options. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.
A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.
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DRV8424EVM — DRV8424 STEP/DIR 控制介面步進馬達驅動器電路板
The DRV8424 evaluation module (EVM) allows easy evaluation of the DRV8424 device.
The DRV8424 devices are integrated motor-driver solutions for bipolar stepper motors. The device integrates two N-channel power MOSFET H-bridges, integrated current sense and regulation circuitry, and a microstepping (...)
| 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。