L6227PD

Overview

The L6227PD is a dual full-bridge motor driver manufactured by STMicroelectronics, utilizing BCD technology to integrate isolated DMOS power transistors with CMOS and bipolar circuits. It operates within an 8V to 52V supply range and delivers a peak output current of 2.8A per channel. The device features a typical on-resistance of 0.73Ω at 25°C junction temperature and supports PWM frequencies up to 100kHz. Packaged in a PowerSO-36 surface-mount format, it includes integrated constant off-time PWM current controllers for chopping regulation.

Feature Summary

• Integrates two independent constant off-time PWM current controllers for precise chopping regulation
• Features non-dissipative overcurrent protection specifically designed for high-side power MOSFETs
• Incorporates slow decay synchronous rectification to enhance efficiency during freewheeling phases
• Includes comprehensive protection mechanisms such as thermal shutdown, cross-conduction prevention, and undervoltage lockout

Applications

• Brushed DC motor control systems
• Stepper motor drive applications
• Solenoid valve actuation circuits
• General industrial motor control modules

Procurement Notes

Verify the specific suffix 'PD' confirms the PowerSO-36 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to integration. Ensure component authenticity by checking for original manufacturer markings and valid traceability data on the delivered units.

Selection Notes

Select this component for designs requiring dual H-bridge capability with integrated current regulation. The BCD technology offers robust performance in noisy environments. Consider the 0.73Ω RDS(ON) for thermal management calculations. Verify that the 100kHz switching frequency aligns with the system's electromagnetic interference constraints and inductor requirements.

Part Context

This part belongs to the L62xx series of motor drivers from STMicroelectronics, designed for medium-power applications. The L6227 variant specifically provides dual full-bridge architecture, distinguishing it from single-bridge counterparts like the L6207. It represents a mature solution in the company's portfolio for cost-effective and reliable motor control implementations.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the L6229, which may offer different current ratings or additional features. Verify electrical parameter compatibility before substitution.