DRV8334
- Three phase half-bridge gate driver
- Drives six N-channel MOSFETs (NMOS)
- 4.5 to 60V wide operating voltage range
- Bootstrap architecture for high-side gate driver
- Strong GVDD charge pump to support up to 50mA average gate switching current enables driving 400nC MOSFETs at 20kHz
- Trickle charge pump to support 100% PWM duty cycle and to generate overdrive supply to drive external protection circuits
- Smart Gate Drive architecture
- 45-level configurable peak gate drive current up to 1000 / 2000mA (source / sink)
- Three-step dynamic drive current control
- Configurable soft shutdown to minimize inductive voltage spikes during overcurrent shutdown
- Low-side Current Sense Amplifier
- Sub-1mV low input offset across temperature
- 9-level adjustable gain
- SPI-based detailed configuration and diagnostics
- DRVOFF pin to disable driver independently
- High voltage wake up pin (nSLEEP)
- 6x, 3x, 1x, and Independent PWM Modes
- Supports 3.3V, and 5V Logic Inputs
- Integrated protection features
- Battery and power supply voltage monitors
- Phase feedback comparator
- MOSFET VDS and Rsense over current monitors
- MOSFET VGS gate fault monitors
- Device thermal warning and shutdown
- Fault condition indicator pin
The DRV8334 is an integrated smart gate driver for three-phase BLDC applications. The device provides three half-bridge gate drivers, each capable of driving high-side and low-side N-channel power MOSFETs. The DRV8334 generates the correct gate drive voltages using an integrated bootstrap diode and a GVDD charge pump. The Smart Gate Drive architecture supports configurable peak gate drive current from 0.8mA up to 1A source and 2A sink. The DRV8334 can operate from a single power supply with a wide input range of 4.5 to 60V. A trickle charge pump enables 100% PWM duty cycle control, and provides overdrive supply voltage for external switches.
The DRV8334 provides low-side current sense amplifiers to support resistor based low-side current sensing. The low offset of the amplifiers enables the system to obtain precise motor current measurement.
A wide range of diagnostics and protection features integrated in the DRV8334 enable a robust motor drive system design and help eliminate the needs of external components. The highly configurable device response allows the device to be integrated seamlessly into a variety of system designs.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV8334 Three-Phase Smart Gate Driver with Accurate Current Sensing and Advanced Monitoring datasheet (Rev. B) | PDF | HTML | 2025/9/9 | ||
| Application brief | DRV8334 Gate Drive Features and Benefits | PDF | HTML | 2025/8/5 |
設計與開發
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DRV8334EVM — 適用於 3 相閘極驅動器的 DRV8334 評估模組
DRV8334EVM-SENSORED-TRAPEZOIDAL-GUI — DRV8334EVM GUI to support sensored trapezoidal motor control
BLDC-MAX-QG-MOSFET-CALCULATOR — Calculate the maximum QG MOSFET for your motor driver
DRV8334-SMART-GATE-DRIVE-REGISTER-SETTINGS-CALC — Calculator to provide recommended smart gate drive register settings for the DRV8334
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTQFP (PHP) | 48 | Ultra Librarian |
| VQFN (RGZ) | 48 | Ultra Librarian |