1 Features

• AEC-Q100 Test Guidance for automotive

applications

– Device ambient temperature: –40°C to +150°C

• Functional Safety-Compliant targeted

– Developed for functional safety applications

– Documentation to aid ISO 26262 system design

will be available upon production release

– Systematic capability up to ASIL D targeted

• 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

– Charge pump to support 100% PWM duty cycle

and to generate overdrive supply

• Smart Gate Drive architecture

– 45-level configurable peak gate drive current up

to 1000 / 2000-mA (source / sink)

• 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)

• Multiple PWM interface options available

– 6x, 3x, 1x PWM Modes

– PWM over SPI

• Supports 3.3-V, and 5-V Logic Inputs

• Optional programmable OTP for reset settings

• Advanced and configurable protection features

– Battery and power supply voltage monitors

– Phase feedback comparator

– MOSFET VDS and Rsense over current monitors

– MOSFET VGS gate fault monitors

– Internal regulator and clock monitors

– Analog Built-In-Self-Test (ABIST)

– Device thermal warning and shutdown

– Fault condition indicator pin

2 Applications

• 12-V / 24-V Automotive Motor-Control Applications

– Electrical Power Steering

– Electrical Brake and Brake Assist

– Transmissions and Pumps

3 Description

The DRV3233 is an integrated smart gate driver

for 12-V and 24-V 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 DRV3233

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 DRV3233 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 DRV3233 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 DRV3233 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.