Product Overview
MP6531AGR-Z is the QFN-28 reel orderable of the MP6531A three-phase BLDC pre-driver. It does not contain the motor-current power MOSFET bridge; instead, it drives three external N-channel MOSFET half-bridges and leaves commutation logic to the external controller.
The device operates from 5 V to 60 V. In the Electrical Characteristics gate-drive section, the maximum-source-current parameter is 0.8 A typical, while the maximum-sink-current parameter is 1 A typical for the high-side gate drive and 2 A typical for the low-side gate drive. These are gate-drive currents, not motor phase-current ratings.
Confirmed Electrical and Ordering Data
| Parameter | Confirmed value | Scope / condition |
|---|---|---|
| Driver Function | Three-phase BLDC motor pre-driver | drives external N-channel MOSFET power stage |
| Topology | Three half-bridges / six external N-channel MOSFETs | |
| Gate Drive Source Current | 0.8 A | typical value of the maximum-source-current parameter |
| High-Side Gate Drive Sink Current | 1 A | typical value of the maximum-sink-current parameter; HS gate drive |
| Low-Side Gate Drive Sink Current | 2 A | typical value of the maximum-sink-current parameter; LS gate drive |
| Input Voltage | 5 to 60 V | operating input range |
| Duty Cycle | 100 % | trickle-charge circuit maintains bootstrap supply for 100% duty-cycle operation |
| Protection | Programmable OCP, adjustable dead time, UVLO, thermal shutdown, fault output | |
| Control | Separate high-side / low-side control | external controller provides commutation/control |
| Package | QFN-28 (4×4 mm) | GR package with exposed thermal pad |
| Packing | Tape and reel, 5000 per reel | -Z reel option |
Engineering Selection Guidance
The 0.8 A source, 1 A high-side sink and 2 A low-side sink figures are gate-drive current capabilities. They describe how the pre-driver charges and discharges external MOSFET gates; they are not motor phase-current ratings. Motor current is set by the external MOSFET stage, current-sense/protection design and thermal limits.
The part uses separate high-side and low-side controls, so it should not be treated as a self-commutating BLDC controller.
Programmable over-current protection monitors the external power stage; dead-time adjustment is important for preventing shoot-through.
GR identifies the QFN-28 4 x 4 mm package. The -Z suffix changes reel size/packing, not the electrical function.
Lifecycle and Ordering Context
MPS currently lists the relevant family/orderable context as Active. The exact MPN is MP6531AGR-Z in QFN-28 (4×4 mm). Lifecycle information is for sourcing and design planning; it does not state HKEQGOO stock, lead time or delivery availability.
