Monolithic Power Systems Inc. MP6632GR-0000-P

Overview

MP6632GR-0000-P from Monolithic Power Systems is a three-phase BLDC motor driver IC with integrated 1A gate drivers, operating from 6V to 50V input supply. It delivers sinusoidal or trapezoidal commutation, supports closed-loop/open-loop speed control via PWM/DC input (50Hz–100kHz or 0–3.3V), and provides Hall-based rotor position sensing for fans, pumps, and industrial blowers.

For engineers reviewing the MP6632GR-0000-P datasheet, MP6632GR-0000-P pinout, MP6632GR-0000-P application, or MP6632GR-0000-P equivalent, key selection criteria include configurable dead time (300 ns min), leading angle (0°–60°), OCP threshold (90–110 mV), FG/RD open-drain speed feedback, and QFN-32 package thermal performance (θJA = 42°C/W).

Technical Context

The MP6632 implements digital control logic with register-configurable drive mode (sinusoidal or trapezoidal), selectable switching frequency (25 kHz or 50 kHz), and dual-speed control architecture-supporting both analog DC voltage mapping and PWM duty-cycle tracking. Its Hall interface accepts single- or triple-Hall inputs with differential or logic-level modes.

Internal protection circuitry includes UVLO (5.2 V rising threshold), locked-rotor detection (0.5 s timeout), over-current protection with resistor-programmable threshold (ROC = 28 kΩ → 100 mV), and thermal shutdown at 170°C with 30°C hysteresis. The FG/RD pin outputs Hall-edge-derived speed pulses, while nFT provides active-low fault signaling.

Key Specifications

Pinout & Package

MP6632GR-0000-P is housed in a thermally enhanced QFN-32 (4mm × 4mm) package with exposed thermal pad, rated MSL 1 and supporting 2.97 W continuous dissipation at TA = 25°C (θJA = 42°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-phase BLDC motor driver applications.

Compared with LV8907UW and DRV8313, MP6632GR-0000-P delivers self-contained motor control-including sinusoidal drive, configurable speed curve, and FG/RD feedback-in a compact QFN-32 package, reducing BOM count and firmware complexity for mid-power (≤50W) fan/pump applications.

Availability

MP6632GR-0000-P is available at Aetrix Electronics and suitable for industrial pump drives, HVAC fan systems, automotive cabin blowers, and medical ventilator motor control requiring stable component supply and long-term lifecycle assurance.

Supply support for MP6632GR-0000-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP6632 belongs to MPS's BLDC motor driver product line, engineered for cost-effective, low-noise, and highly integrated control of three-phase brushless motors in thermal management and fluid handling applications.

FAQ

What is the maximum motor voltage supported by MP6632GR-0000-P?

The MP6632GR-0000-P supports input supply voltages from 6V to 50V. This defines the maximum bus voltage applied to the motor phases via external FETs. It does not directly drive the motor windings but controls external N-channel MOSFETs whose drain-source rating must exceed the system's peak bus voltage plus transients.

How does the FG/RD pin function in speed detection versus rotor lock detection?

FG/RD operates in two modes selected by register: in FG mode, it outputs an open-drain pulse per Hall sensor edge (1x/½x/¼x or 1x/½x/3x depending on Hall count); in RD mode, it pulls low continuously during rotor lock detection (0.5 s timeout). External pull-up is mandatory in both modes.

Can MP6632GR-0000-P operate without external Hall sensors?

No-MP6632GR-0000-P requires at least one external Hall-effect sensor (single or triple) for commutation timing. It does not support sensorless back-EMF detection. The HA+/HA−, HB+/HB−, and HC+/HC− pins must be connected to Hall outputs; floating them disables motor operation.

What is the purpose of the D_MIN pin, and how does it affect startup behavior?

The D_MIN pin sets the initial PWM duty cycle at motor enable via an external resistor (e.g., 10 kΩ → 15.6% starting duty). If floated, the starting duty is set by internal registers. This prevents stalling during cold start and ensures reliable rotation initiation under load.

Does MP6632GR-0000-P support both open-loop and closed-loop speed control simultaneously?

Yes-it supports mixed-mode operation: closed-loop control below 87.5% input PWM duty (using FG/RD feedback), and open-loop above that threshold. This hybrid approach maintains precise speed regulation at low speeds while enabling full-speed override without control instability.

How is thermal performance managed in the QFN-32 package?

The QFN-32 (4mm × 4mm) package features an exposed thermal pad soldered to a dedicated PCB copper pour. With θJA = 42°C/W on a 4-layer board, it dissipates up to 2.97 W at 25°C ambient. Thermal shutdown activates at 170°C junction temperature, with 30°C hysteresis ensuring safe recovery before re-enabling gate drivers.