DRV8844A
- Four-channel half-bridge driver
- Independent control of each half-bridge
- Can be used as low-side or high-side switch
- Outputs can be connected in parallel
- Low MOSFET RDS(ON): 210mΩ per FET
- 2.5A Maximum Drive Current at 24V, 25°C
- Bipolar power supply support up to ±32.5V
- 8V to 65V operating supply voltage range
- Separate power grounds for connection of optional sense resistors
- Can drive various types of loads -
- Four solenoids, valves, or relays
- Two brushed-DC motors
- One stepper motor
- One or two Peltier thermoelectric coolers (TEC)
- One 3-phase brushless-DC (BLDC) motor
- Built-in 3.3V, 10mA LDO regulator
- Industry standard IN/EN digital control interface
- Protection features
- VM undervoltage lockout (UVLO)
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Fault condition output (nFAULT)
The DRV8844A is a four-channel, individually controllable half-bridge driver for a wide range of applications. The device supports up to 2.5A peak or 1.75A RMS output current at 24V and 25°C with proper PCB heatsinking. The output stage of the device consists of N-channel power MOSFETs configured as four independent half-bridges, allowing the device to be used for driving two DC motors, one stepper motor, four solenoids, or other loads. Each output can be a LS switch (low-side switch), HS switch (high-side switch), or a push-pull output driver.
Separate inputs to independently control each 1/2-H-bridge are provided. To allow operation with split (positive and negative) power supplies, the logic inputs and nFAULT output are referenced to a separate floating ground pin. Additionally, the DRV8844A supports the connection of sense resistors on each individual half-bridge, allowing for current sensing at the system level for applications such as motor control.
Internal shutdown functions are provided for over current protection, short circuit protection, undervoltage lockout, and overtemperature.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8844A Quad Half-Bridge Driver with Independent Grounds datasheet | PDF | HTML | 2025年 8月 7日 |
設計與開發
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DRV8844AEVM — DRV8844A 評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 28 | 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。