MP6543GL-Z

Overview

The MP6543GL-Z is a three-phase brushless DC motor driver from Monolithic Power Systems, designed for applications requiring integrated control and power stages. It operates within a supply voltage range of 3V to 12V and delivers a continuous output current of 2A. The device features an internal charge pump enabling 100% duty cycle operation and includes automatic synchronous rectification. Key electrical parameters include a maximum operating temperature of +125°C and a minimum of -40°C. It utilizes a 24-pin QFN package measuring 3mm x 4mm with an exposed thermal pad.

Feature Summary

• Integrates three half-bridges driven by six N-channel power MOSFETs with pre-drivers and gate drive power supplies.
• Provides independent ENABLE and PWM inputs for each high-side bridge to facilitate precise motor control.
• Includes built-in safety mechanisms such as over-temperature protection, under-voltage lockout, and adjustable over-current protection.
• Features an integrated bidirectional current sampling amplifier and a 3.3V/100mA LDO regulator.

Applications

• Three-phase BLDC motor control in consumer electronics
• Fan and pump drives in home appliances
• Precision motion control systems
• Automotive ignition and actuator drivers

Procurement Notes

Verify the specific suffix 'Z' corresponds to the reel packaging configuration when ordering. Confirm that the design supports the 3V to 12V input range and 2A current capability required for the target application. Ensure thermal management strategies account for the QFN-24 package characteristics and the exposed pad requirement for heat dissipation during continuous operation.

Selection Notes

Select this component for designs requiring a fully integrated three-phase driver with separate enable and PWM controls. It is suitable where space constraints favor the compact 24-QFN footprint. Consider the 110mΩ on-resistance per FET for efficiency calculations. Compare against variants like MP6543A or MP6543B if independent high/low side inputs or Hall sensor interfaces are preferred over standard PWM/ENABLE logic.

Part Context

This part belongs to the MP6543 family of three-phase BLDC motor drivers. The GL-Z suffix indicates the specific tape and reel packaging variant manufactured by Monolithic Power Systems. It shares core functionality with other members of the series but differs in input interface configurations and packaging options available across the product line.

Replacement Considerations

MP6543CGL-P is listed as a parameter-equivalent substitute for the discontinued MP6543CGL-Z variant. For direct replacement of the MP6543GL-Z, verify compatibility with MP6543BGL-P if Hall input interfaces are acceptable, though functional differences exist between the base model and A/B variants.

FAQ

Does the MP6543GL-Z support 100% duty cycle operation?

Yes, the device includes an internal charge pump that provides sufficient gate drive voltage to maintain 100% duty cycle operation for the high-side MOSFETs.

What type of inputs does the MP6543GL-Z utilize for control?

The MP6543GL-Z uses ENABLE and PWM inputs for each high-bridge, distinguishing it from the MP6543A (independent HS/LS inputs) and MP6543B (Hall signal inputs).