DRV8307RHAR

Overview

The DRV8307RHAR is a three-phase brushless DC motor controller featuring a half-bridge pre-driver designed to drive six N-type MOSFETs with a gate-drive current of 30 mA. It operates on a single power supply within an input voltage range of 8.5 V to 32 V. The device supports sensored BLDC motors via a single PWM input for speed control and includes integrated commutation logic with three Hall sensor inputs. A dedicated 5 V regulator powers external Hall sensors, while a current sense input enables programmable current limiting.

Feature Summary

• Integrated commutation logic supporting three Hall sensor inputs for sensored BLDC applications
• Built-in 5 V regulator dedicated to powering Hall-effect sensors and auxiliary components
• Configurable current limiting through an external sense resistor connected to the current sense input

Applications

• Sensored three-phase brushless DC motor drives
• Industrial automation systems requiring precise motor control
• Home appliance motor control units

Procurement Notes

Verify the specific suffix RHAR against the manufacturer datasheet to confirm package type and temperature rating. Ensure compatibility with the target MOSFET gate charge requirements given the fixed 30 mA drive capability. Confirm that the application design accommodates the 8.5 V minimum operating voltage and utilizes the internal 5 V regulator correctly for sensor power.

Selection Notes

Select this component when designing sensored BLDC systems requiring integrated commutation logic rather than discrete implementation. The fixed 30 mA gate drive current suits medium-power MOSFETs but may be insufficient for high-gate-charge devices compared to higher-current variants. The inclusion of a dedicated 5 V regulator simplifies the bill of materials by eliminating the need for a separate linear regulator for Hall sensors.

Part Context

This part belongs to the DRV830x family of three-phase pre-drivers from Texas Instruments. Unlike the DRV8308 which features a fully digital speed loop and adjustable slew rates, the DRV8307 focuses on basic sensored commutation with a fixed gate drive current. It serves as a cost-effective solution for applications where complex digital tuning is not required.

Replacement Considerations

The DRV8308 series offers similar functionality but includes a digital speed loop and higher drive current. Verify if the additional digital features are necessary or if the simpler architecture of the DRV8307 suffices for the specific torque and noise requirements.