DRV8334-Q1中文资料具有精确电流检测功能的汽车级 12V 和 24V 电池三相栅极驱动器单元数据手册TI规格书

描述 Description

The DRV8334-Q1 is an integrated smart gate driver for 12V and 24V automotive 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-Q1 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-Q1 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-Q1 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-Q1 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.

特性 Features

AEC-Q100 qualified for automotive applications. Temperature options:

DRV8334EPHP: –40°C to +150°C, TA

DRV8334QPHP: –40°C to +125°C,TA



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

Optional programmable OTP for reset settings

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