MP6543HGL-B-Z

Overview

The MP6543HGL-B-Z is a three-phase power stage designed for brushless DC motor applications. 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 22V and delivers a continuous output current of 2A. Each half-bridge features ENABLE and PWM inputs for control. Internal circuitry includes a charge pump for high-side MOSFET gate driving to enable 100% duty cycle operation, an internal 3.3V/100mA LDO regulator, and automatic synchronous rectification. Protection mechanisms include over-temperature shutdown, under-voltage lockout (UVLO), and adjustable over-current protection (OCP).

Feature Summary

• Integrates three half-bridges with N-channel power MOSFETs, pre-drivers, and current sampling amplifiers.
• Supports 100% duty cycle operation via internal charge pump and trickle charging circuits.
• Includes automatic synchronous rectification functionality.
• Features integrated over-temperature, under-voltage lockout, and adjustable over-current protection.

Applications

• Brushless DC (BLDC) motor drives
• Motion control systems
• Industrial automation equipment

Procurement Notes

Verify the specific suffix 'B-Z' against official Monolithic Power Systems documentation to confirm pinout compatibility and functional specifications. Ensure that the required Hall-element input configuration matches the system design, as this variant differs from standard ENABLE/PWM versions. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement.

Selection Notes

Select this component when a three-phase BLDC driver with integrated power stages and Hall sensor inputs is required. Consider the 2A continuous current capability and 22V maximum supply voltage limits relative to the motor load. Evaluate thermal performance based on the QFN-24 package and PCB layout constraints. Verify interface requirements, as this model utilizes Hall inputs rather than direct PWM or ENABLE signals found in other variants.

Part Context

The MP6543HGL-B-Z belongs to the MP6543 family of three-phase power stages manufactured by Monolithic Power Systems. This series provides integrated solutions for BLDC motor control, combining power switching elements with necessary gate drivers and protection logic. The 'B' designation typically indicates support for Hall element inputs, distinguishing it from variants like the MP6543GL which use ENABLE and PWM inputs.

Replacement Considerations

MP6543HGL-P

FAQ

What type of input signals does the MP6543HGL-B-Z accept?

The MP6543HGL-B-Z accepts Hall-element inputs for commutation control, differing from variants that utilize ENABLE and PWM inputs.

Does the MP6543HGL-B-Z support 100% duty cycle operation?

Yes, the device uses an internal charge pump and trickle charging circuit to maintain sufficient gate drive voltage for 100% duty cycle operation.