MPQ6541AGQKTE-AEC1-Z

Overview

The MPQ6541AGQKTE-AEC1-Z is a three-phase BLDC motor driver from Monolithic Power Systems, designed for automotive applications with AEC-Q100 Grade 1 qualification. It integrates three half-bridges of N-channel power MOSFETs, pre-drivers, gate drivers, and current sense amplifiers. The device operates within a supply voltage range of 4.75V to 40V, delivering an 8A continuous output current or 12A peak current for one second. Key electrical parameters include a 2MHz switching frequency, 15mΩ RDS(ON) per MOSFET, and a maximum junction temperature of 125°C. It utilizes a TQFN-26 (6mm x 6mm) package.

Feature Summary

• Integrates independent high-side and low-side inputs for flexible control interface configurations
• Supports 100% duty cycle operation through internal charge pump and trickle charging circuits
• Includes automatic synchronous rectification for improved efficiency in commutation cycles
• Features integrated over-current protection, under-voltage lockout, and thermal shutdown

Applications

• Automotive LiDAR systems requiring qualified motor drivers
• Three-phase brushless DC motor control in automotive environments
• General automotive motion control applications

Procurement Notes

Verify the specific suffix 'A' indicates independent HS/LS inputs rather than integrated ENBL/PWM inputs found in other variants. Confirm AEC-Q100 Grade 1 compliance is required for the target automotive application. Ensure the TQFN-26 wettable flank package is compatible with the assembly process. Check for RoHS3 compliance status before finalizing procurement specifications.

Selection Notes

Select this component when independent high-side and low-side input signals are preferred over combined enable and PWM pins. The 40V rating supports standard automotive battery architectures. The 8A continuous current capability suits moderate-power BLDC motors. Consider the 2MHz switching frequency for balancing EMI performance against switching losses in the design phase.

Part Context

This part is an enhanced variant of the MPQ6541-AEC1 series. While the base MPQ6541-AEC1 uses integrated Enable and PWM inputs per half-bridge, the MPQ6541A-AEC1 variant provides separate High-Side and Low-Side inputs. All other functional blocks, including the power stage and protection features, remain identical across these related part numbers.

Replacement Considerations

MPQ6541-AEC1 serves as a direct functional substitute if the system design accommodates integrated Enable and PWM inputs instead of independent HS/LS signals. Both parts share identical power stages, protection mechanisms, and packaging.