MP6541AGQKT-Z

Overview

The MP6541AGQKT-Z is a three-phase power stage designed for brushless DC motor applications. It integrates six N-channel power MOSFETs arranged in three half-bridges, along with pre-drivers and gate drive supplies. The device supports a supply voltage range of 4.75 V to 40 V and delivers an output current of 8 A. It operates at a switching frequency of 2 MHz and dissipates up to 5.84 W of power. The component functions within a temperature range of -40°C to +125°C and utilizes a TQFN-26 (6mm x 6mm) surface-mount package.

Feature Summary

• Integrates three half-bridge power stages with internal charge pump for high-side gate driving
• Supports 100% duty cycle operation via trickle charge circuit maintaining sufficient gate voltage
• Includes integrated bidirectional current sampling amplifiers for precise control
• Provides comprehensive protection features including UVLO, OVP, over-temperature shutdown, and over-current protection

Applications

• Brushless DC (BLDC) motor drives
• Industrial motion control systems
• Automotive electronics requiring robust power stages

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance status as per manufacturer documentation. Confirm that the TQFN-26 package dimensions align with PCB footprint requirements. Ensure input signal compatibility with HS/LS or PWM/ENBL configurations depending on the exact variant revision. Check moisture sensitivity level handling procedures during assembly to prevent package damage.

Selection Notes

Select this component when a compact, integrated three-phase solution is required for BLDC motors. The 8 A continuous current rating suits moderate power applications. The absence of AEC-Q100 certification distinguishes it from automotive-grade variants like the MPQ6541 series. Consider the 2 MHz switching frequency for balancing efficiency and EMI performance in space-constrained designs.

Part Context

This part belongs to the Monolithic Power Systems MP6541 family of three-phase power stages. It serves as a non-automotive grade alternative to the MPQ6541A-AEC1 series, which holds AEC-Q100 qualification. The device simplifies motor driver design by combining power switches, drivers, and protection circuits into a single small-footprint package.

Replacement Considerations

MPQ6541AGQKTE-AEC1-Z is a qualified automotive-grade substitute with identical electrical characteristics but different reliability certification.