MP6543BGL-Z

Overview

The MP6543BGL-Z is a three-phase power stage designed for brushless DC (BLDC) motors, manufactured by Monolithic Power Systems. It integrates three half-bridges driven by six N-channel power MOSFETs, along with pre-drivers, gate drive power supplies, and current sampling amplifiers. The device supports a supply voltage range of 3V to 12V and delivers a continuous output current of 2A. It features Hall element inputs for commutation control and utilizes an internal charge pump to enable 100% duty cycle operation. The component is housed in a 24-pin QFN package measuring 3mm x 4mm.

Feature Summary

• Integrates three half-bridge drivers with N-channel MOSFETs and built-in current sampling amplifiers
• Supports Hall element inputs for direct motor commutation control
• Includes internal charge pump and trickle charge circuit for high-side gate driving
• Provides comprehensive protection against over-temperature, under-voltage lockout, and over-current

Applications

• Brushless DC (BLDC) motor drives
• Multi-phase motor control systems
• Industrial motion control applications

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and lead-free status as per manufacturer declarations. Confirm that the Hall-element input variant matches the system's sensor requirements, distinguishing it from models with separate high-side/low-side inputs. Ensure the 24-QFN package footprint aligns with the PCB layout design specifications before finalizing procurement orders.

Selection Notes

Select this component when Hall sensor feedback is required for BLDC motor commutation rather than back-EMF sensing. The integrated power stage simplifies design by combining driver logic with high-current MOSFETs. Consider the 2A continuous current limit and thermal dissipation capabilities of the QFN package relative to the application's load profile and ambient temperature constraints.

Part Context

This part belongs to the MP6543 series of three-phase power stages. While other variants like MP6543AGL-Z offer separate high-side and low-side inputs, the MP6543BGL-Z specifically incorporates Hall element inputs. All variants share the same core architecture, including the integrated half-bridges and protection features, but differ in their signal interface configurations.

Replacement Considerations

MP6543GL-Z serves as a parameter-equivalent alternative within the same product family. MP6543BGL-P is another compatible option offering identical electrical characteristics. Verify pin compatibility and input signal types when substituting these parts to ensure functional equivalence in the target circuit.

FAQ

What type of input signals does the MP6543BGL-Z accept?

The MP6543BGL-Z accepts Hall element inputs for motor commutation, distinguishing it from variants that use separate high-side and low-side PWM inputs.

Does the MP6543BGL-Z support 100% duty cycle operation?

Yes, the device includes an internal charge pump and a trickle charge circuit to maintain sufficient gate drive voltage, enabling 100% duty cycle operation.