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.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | DRV8844A Quad Half-Bridge Driver with Independent Grounds データシート | PDF | HTML | 2025年 8月 7日 |
設計および開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
DRV8844AEVM — DRV8844A 評価基板
パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
HVSSOP (DGQ) | 28 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。