DRV8334
- Three phase half-bridge gate driver
- Drives six N-channel MOSFETs (NMOS)
- 4.5 to 60-V 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 cut-off or reverse polarity protection circuit
- Smart Gate Drive architecture
- 45-level configurable peak gate drive current up to 1000 / 2000-mA (source / sink)
- Three-step drive current configuration to optimize charge/discharge cycle and minimize deadtime
- Closed-loop automatic deadtime insertion based on gate-source voltage monitoring
- Configurable soft shutdown to minimize inductive voltage spikes during overcurrent shutdown
- Low-side Current Sense Amplifier
- Sub-1 mV 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 3.3-V, and 5-V 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 0.7-mA up to 1-A source and 2-A sink. The DRV8334 can operate from a single power supply with a wide input range of 4.5 to 60-V. A trickle charge pump allows for the gate drivers to support 100% PWM duty cycle control, and provides overdrive gate drive voltage of 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.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8334 Three-Phase Smart Gate Driver with Accurate Current Sensing and Advanced Monitoring datasheet | PDF | HTML | 2023/05/09 |
| EVM User's guide | DRV8334 Evaluation Module User's Guide | PDF | HTML | 2023/11/15 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
DRV8334EVM — 3상 게이트 드라이버용 DRV8334 평가 모듈
BLDC-MAX-QG-MOSFET-CALCULATOR — Calculate the maximum QG MOSFET for your motor driver
지원되는 제품 및 하드웨어
제품
BLDC 드라이버
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HTQFP (PHP) | 48 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치