DRV11873PWPR

Overview

The DRV11873PWPR is a Texas Instruments 12V nominal voltage, three-phase brushless DC (BLDC) motor driver featuring integrated power MOSFETs. It supports a continuous output current of 1.5A and a peak drive current up to 2A. The device operates within an input voltage range of 5V to 16V and utilizes a 16-pin HTSSOP package. Key electrical specifications include a total H+L RDSON of 450mΩ and a standby current of 2.7mA. It employs a 150° sensorless back-electromotive force (BEMF) control scheme with synchronous rectification PWM operation.

Feature Summary

• Integrates six N-channel MOSFETs for compact board design without external sensing resistors
• Employs proprietary sensorless BEMF control algorithm for simplified firmware requirements
• Features built-in overcurrent protection and thermal shutdown for system reliability
• Provides open-drain outputs for frequency generation and ready status indication

Applications

• Appliance cooling fans
• Desktop computer cooling fans
• Server cooling fans

Procurement Notes

Verify the specific suffix 'PWPR' corresponds to the HTSSOP-16 tape and reel packaging configuration. Confirm that the operating temperature range meets the application's environmental requirements, as standard ratings may vary between -40°C to +85°C or -40°C to +125°C depending on the exact revision. Ensure the input voltage supply remains within the 5V to 16V limits during all operational phases.

Selection Notes

Select this component when designing fan or motor systems requiring a single-chip solution for three-phase BLDC motors. It is suitable for applications prioritizing reduced bill of materials and minimized board space. Consider its 1.5A continuous current rating against the mechanical load requirements. Verify compatibility with the 7kHz to 100kHz PWM input frequency range for speed control integration.

Part Context

This part belongs to Texas Instruments' family of sensorless BLDC motor drivers designed to replace traditional multi-component discrete solutions. It targets low-voltage, low-power motor control applications where size and cost efficiency are critical. The device simplifies development by integrating gate drivers and power switches, eliminating the need for complex firmware typically associated with sensorless commutation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.