L6229PDTR

Overview

The L6229PDTR is a fully integrated three-phase motor driver designed for brushless DC (BLDC) applications. It combines isolated DMOS power transistors with CMOS and bipolar circuits on a single chip using BCD technology. The device features an operating supply voltage range from 8V to 52V, delivering a peak output current of 2.8A and a continuous DC current of 1.4A. It includes a constant off-time PWM current controller, Hall sensor decoding logic for 60° and 120° configurations, and non-dissipative overcurrent protection. The component operates at frequencies up to 100kHz and provides thermal shutdown and undervoltage lockout capabilities within a PowerSO36 package.

Feature Summary

• Integrates a three-phase DMOS bridge with dedicated control circuitry for BLDC motors
• Includes decoding logic for single-ended Hall sensors to generate power stage sequences
• Features non-dissipative overcurrent detection and protection on high-side MOSFETs
• Provides diagnostic outputs and tachometer signals for speed loop control

Applications

• Three-phase brushless DC motor control systems
• Industrial automation drives
• Home appliance motor management
• Automotive motion control applications

Procurement Notes

Verify the specific suffix 'PDTR' corresponds to the PowerSO36 surface-mount package configuration when sourcing. Confirm that the ordering code matches the exact pinout and thermal characteristics required for the target PCB layout. Ensure compatibility with the intended Hall sensor interface requirements before finalizing procurement orders.

Selection Notes

Select this component for designs requiring integrated drive and control for three-phase BLDC motors without external logic gates. Consider the 1.4A DC current limit and 52V maximum voltage rating against load requirements. Evaluate the need for Hall sensor decoding versus back-EMF sensing methods based on application complexity and cost constraints.

Part Context

This part belongs to the L6229 series of motor drivers manufactured by STMicroelectronics. It is distinct from stepper motor drivers like the L6228, as it is specifically optimized for three-phase BLDC applications. The PDTR designation indicates the specific tape-and-reel packaging format available for automated assembly processes.

Replacement Considerations

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