L6227QTR

Overview

The L6227QTR is a DMOS dual full bridge gate driver designed for motor control applications, realized in BCD multipower technology. It integrates isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device features two independent constant off-time PWM current controllers for chopping regulation. It operates within an 8 V to 52 V supply voltage range and delivers a peak output current of 2.8 A (1.4 A DC). Key electrical parameters include a typical RDS(on) of 0.73 Ω at TJ = 25 °C, rise/fall times of 250 ns, and maximum operating frequencies up to 100 kHz. The component supports logic types including CMOS and TTL.

Feature Summary

• Dual independent constant off-time PWM current controllers perform chopping regulation
• Non-dissipative overcurrent protection on high-side power MOSFETs
• Slow decay synchronous rectification capability
• Integrated fast free-wheeling diodes

Applications

• Motor control systems
• Brushed DC motor drives
• Stepper motor drivers
• Industrial automation equipment

Procurement Notes

Verify the specific ordering suffix against official STMicroelectronics documentation to confirm package type and reel specifications. Ensure compatibility with moisture sensitivity levels and storage conditions as defined in the datasheet. Cross-reference part numbers carefully to distinguish between tray and reel packaging variants within the L6227 series. Confirm RoHS compliance status and lead-free requirements prior to procurement.

Selection Notes

Select this component when a dual full bridge configuration with integrated PWM current control is required. The L6227QTR is suitable for applications demanding high peak currents and robust protection features like thermal shutdown and cross-conduction prevention. Consider the VQFPN32 package constraints and thermal dissipation requirements for PCB layout. Evaluate the operating frequency limits and supply voltage range against system specifications.

Part Context

The L6227QTR belongs to the L6227 family of DMOS dual full bridge drivers from STMicroelectronics. It utilizes BCD multipower technology to combine power and logic functions. This family is distinct from other ST motor drivers like the L6226 or L6228, which may have different current ratings or control interfaces. The 'TR' suffix typically indicates tape and reel packaging for automated assembly.

Replacement Considerations

L6227Q