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Monolithic Power Systems Inc. MP6631GL-0000-P
- Part No.:
- MP6631GL-0000-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Motor Drivers, Controllers
- Package:
- 26-PowerVFQFN
- Datasheet:
-
MP6631GL-0000-P.pdf
- Description:
- 24V INPUT, 3A PEAK PHASE CURRENT
- Quantity:
- Payment:
- Shipping:
Inventory:4,932
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Product details
Overview
MP6631GL-0000-P from Monolithic Power Systems is a three-phase BLDC motor driver IC with integrated 160mΩ high-side and low-side MOSFETs, supporting 3.6V–24V input voltage, up to 3A peak phase current, sinusoidal drive, and single- or triple-Hall sensor interface for fan, pump, and general BLDC motor control in industrial and embedded systems.
For engineers reviewing the MP6631GL-0000-P datasheet, MP6631GL-0000-P pinout, MP6631GL-0000-P application, or MP6631GL-0000-P equivalent, key selection considerations include Hall sensor configuration flexibility (single vs. triple), closed/open-loop speed control via PWM/DC pin, FG/RD rotational speed or lock detection, DIR-controlled direction, and integrated OCP/UVLO/thermal shutdown protection.
Technical Context
The MP6631 implements a configurable six-step commutation controller with Hall-input decoding logic, programmable soft-start (1.3–10.4s), pre-startup timer (2.5–20ms), and register-based speed curve tuning across five duty points (37.5%–100%). It supports both open-loop (duty-driven) and closed-loop (Hall-edge feedback) speed regulation with integrator gain (KI/KP) adjustment.
Its internal architecture integrates gate drivers, analog comparators for Hall signal conditioning, a 5.24V reference output, and an open-drain FG/RD output that delivers configurable frequency ratios (1x/1/2x/1/4x for single Hall; 1x/1/2x/3x for triple Hall) for tachometer or lock-detection use cases.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.6V to 24V - Enables direct operation from 5V, 12V, or 24V system rails without external DC-DC pre-regulation. |
| Peak Phase Current | 3A - Supports continuous driving of medium-power BLDC motors (e.g., 20W–40W fans/pumps) with margin for startup torque. |
| HS/LS RDS(ON) | 85mΩ / 75mΩ @ 100mA - Low conduction loss enables >90% efficiency at mid-load, reducing thermal stress in QFN-26 package. |
| PWM/DC Input | 1kHz–100kHz PWM or 0–1.2V DC - Dual-mode speed command interface simplifies MCU integration with or without PWM peripherals. |
| FG/RD Output | Open-drain, configurable frequency ratio - Provides hardware-tied tach feedback or lock-fault signaling without external logic. |
| Thermal Shutdown | 160°C threshold, 25°C hysteresis - Self-protecting operation under overload or poor heatsinking; recovers autonomously at 135°C. |
| UVLO Threshold | 3.3V (rising), 360mV hysteresis - Prevents erratic startup or brownout-induced latch-up during rail ramp-up or sag. |
Pinout & Package
MP6631GL-0000-P is housed in a thermally enhanced QFN-26 (3mm × 4mm) package with exposed thermal pad, optimized for compact motor control modules requiring efficient power dissipation and minimal PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FG/RD | Open-drain speed/lock indicator | Outputs Hall edge pulses (FG mode) or latches low on rotor lock (RD mode); requires external pull-up for logic-level compatibility. |
| 2,19 OUTC | Phase C output terminal | Drives one leg of three-phase motor winding; connects directly to motor phase C via low-inductance trace. |
| 3,5 PGND | Power ground | Dedicated low-impedance return path for motor current; must be connected to thermal pad and separated from AGND. |
| 4,17 OUTB | Phase B output terminal | Drives motor phase B; paired with OUTA/OUTC to form full bridge for trapezoidal or sinusoidal commutation. |
| 6,15 OUTA | Phase A output terminal | Primary high-current output for phase A; shares layout constraints with OUTB/OUTC for balanced EMI performance. |
| 7 HA+, 9 HA− | Phase A Hall differential input | Accepts ±60mV min differential Hall signal; common-mode range 1.06–4.43V supports standard Hall sensors. |
| 10 HB+, 11 HB− | Phase B Hall differential input | Enables triple-Hall operation; identical electrical specs to HA+/HA− for consistent noise immunity across phases. |
| 12 HC+, 14 HC− | Phase C Hall differential input | Completes triple-Hall interface; allows precise 60° electrical commutation timing without external logic. |
| 16,18 VCC | Input supply pin | Accepts 3.6–24V; requires local 1µF ceramic bypass capacitor per pin to suppress switching noise. |
| 20 PWM/DC | Speed control input | Configurable as PWM (1–100kHz) or analog (0–1.2V); register-selectable via DC_PWM bit for flexible MCU interfacing. |
| 22 REF | 5.24V reference output | Stable precision reference for external sensing or biasing; requires 1µF local bypass for regulation stability. |
| 23 AGND | Analog ground | Separate ground for Hall inputs and internal ADCs; must tie to PGND at single point near device to avoid noise coupling. |
| 24 DIR | Direction control input | Logic-level input (0.4V/1.5V thresholds); forward (A→B→C) when low, reverse (A→C→B) when high; internal pull-down. |
| 25 BRK | Brake control input | Pull high to short all phases and halt motor rapidly; internal pull-down ensures safe default (no brake) at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Sinusoidal drive mode | Reduces torque ripple and acoustic noise across full speed range-critical for quiet fan and HVAC applications. |
| Configurable 5-point speed curve | Enables non-linear fan speed vs. PWM duty mapping (e.g., linear ramp below 50%, exponential above) without MCU firmware changes. |
| Single- or triple-Hall sensor support | Reduces BOM cost and board space in cost-sensitive designs (single Hall) while retaining precision in high-reliability systems (triple Hall). |
| Programmable soft-start (1.3–10.4s) | Eliminates inrush current spikes during startup-prevents voltage droop on shared 12V rails and extends motor bearing life. |
| Lock-rotor detection & auto-retry | 0.5s detection window + 4.5s retry delay enables autonomous recovery from jammed or obstructed motor conditions. |
| Register-based closed-loop control | KI/KP tuning and SPD_MIN/SPD_MAX registers allow field-adjustable loop response-no hardware change needed for different motor loads. |
Applications
| Server Cooling Fan Control | Industrial Pump Motor Drive |
|---|---|
|
Use Scenario: High-reliability 12V/24V server chassis fan with thermal throttling and RPM telemetry. IC Role / Device Role / Timing Role: BLDC driver with FG/RD tach output, closed-loop speed regulation, and DIR-controlled airflow reversal for dust mitigation. Use Value: Sinusoidal drive cuts audible noise by >15dB(A); configurable speed curve matches thermal demand profiles without host CPU intervention. |
Use Scenario: Compact 24V brushless pump in medical fluid delivery or lab automation equipment. IC Role / Device Role / Timing Role: Integrated motor controller with brake (BRK), locked-rotor protection, and analog speed command (0–1.2V) for PLC analog output compatibility. Use Value: Single-Hall mode reduces sensor count and wiring; thermal shutdown prevents coil damage during dry-run or occlusion events. |
| Automotive Cabin Ventilation | IoT Smart Appliance Motor |
|
Use Scenario: Low-voltage (5–16V) HVAC blower in automotive infotainment-integrated climate modules. IC Role / Device Role / Timing Role: Motor driver with UVLO (3.3V) and wide VIN range enabling direct battery connection; DIR pin enables reversible airflow ducting. Use Value: 3.6V minimum VIN supports cold-cranking operation; OCP and thermal shutdown meet AEC-Q100 functional safety expectations. |
Use Scenario: Cloud-connected smart vacuum or air purifier using BLE MCU for variable-speed fan control. IC Role / Device Role / Timing Role: BLDC interface with PWM/DC dual-input mode-supports legacy PWM firmware or new analog voltage commands from low-pin-count MCUs. Use Value: Pre-startup timer (10ms default) ensures reliable start under load; NVM-programmable registers enable factory calibration without custom firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Toshiba TB6605FTG | Higher 5A peak current, but no integrated REF or FG/RD; requires external Hall signal conditioning and tach circuitry. | Preferred for higher-power (>35W) pumps where headroom matters more than board area or BOM count. | Select if needing >3A drive capability and willing to add external components for speed feedback and reference generation. |
| STMicroelectronics STSPIN32F0B | Integrated 32-bit ARM Cortex-M0 MCU + gate drivers; supports FOC, but requires firmware development and lacks factory-programmable NVM speed curves. | Better suited for applications demanding field-oriented control or real-time adaptive algorithms (e.g., drone gimbal stabilization). | Choose when vector control, dynamic load compensation, or over-the-air parameter updates are required-accept added software complexity. |
Compared with TB6605FTG and STSPIN32F0B, MP6631GL-0000-P delivers optimal balance of integration (REF, FG/RD, Hall interface), configurability (NVM speed curves, soft-start, lock-retry), and ease-of-use for fixed-function BLDC applications-reducing design time and validation effort without sacrificing reliability.
Availability
MP6631GL-0000-P is available at Aetrix Electronics and suitable for server cooling, industrial pump control, automotive HVAC, and IoT appliance motor applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP6631GL-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, including DC-DC converters, motor drivers, and LED controllers, with global manufacturing and quality certifications.
The MP6631 belongs to MPS's fan and BLDC motor driver product line, designed specifically for cost-sensitive, space-constrained, and noise-sensitive applications such as data center cooling, medical devices, and consumer appliances.
FAQ
What Hall sensor configurations does MP6631GL-0000-P support?
The MP6631GL-0000-P supports both single-Hall and triple-Hall sensor modes, selected via the SINGLE register bit. In single-Hall mode, only HC+ and HC− are used for commutation; in triple-Hall mode, HA/HB/HC differential pairs provide full 60° electrical resolution. No external logic or resistor networks are required to switch between modes.
How is speed controlled-PWM or analog voltage?
Speed is controlled via the PWM/DC pin, which accepts either a 1kHz–100kHz PWM signal (DC_PWM = 0) or a 0–1.2V DC voltage (DC_PWM = 1). The mode is set by register bit DC_PWM and persists through power cycles when stored in OTP/NVM. Both methods support closed-loop or open-loop regulation depending on OPEN_L/CLOSE_H settings.
Does MP6631GL-0000-P require external current-sense resistors?
No. The MP6631GL-0000-P uses internal MOSFET RDS(ON) sensing for cycle-by-cycle over-current protection (OCP) and does not require external shunt resistors. The OCP threshold is programmable via ILIM[1:0] bits and defaults to 2.7–3A, matching its rated peak phase current.
What is the function of the FG/RD pin beyond tach output?
The FG/RD pin serves dual roles: as FG (frequency generator) it outputs Hall-edge pulses at configurable multiples (1x/1/2x/1/4x or 1x/1/2x/3x); as RD (rotor lock detector), it pulls low continuously when no Hall edge is detected for ≥0.5s. Mode selection is controlled by FGRD[1:0] bits, and the pin is always open-drain, requiring an external pull-up resistor.
Can MP6631GL-0000-P drive motors above 24V?
No. The absolute maximum VCC rating is +28V, but the recommended operating range is strictly 3.6V–24V per datasheet specifications. Operation above 24V risks violating UVLO hysteresis, exceeding thermal limits due to increased conduction loss, and invalidating lifetime reliability data. For >24V systems, a pre-regulator stage is required.
Is the QFN-26 package lead-free and RoHS compliant?
Yes. MP6631GL-0000-P is fully lead-free, halogen-free, and compliant with the EU RoHS directive. The top marking "MP6631L" and MSL Level 1 rating confirm moisture sensitivity compliance for standard SMT assembly processes without baking requirements.
How is the soft-start time configured?
Soft-start time is set via TDYN[1:0] bits in REG05h and ranges from 1.3s (00) to 10.4s (11). This controls the ramp rate of the internal reference speed during startup, limiting inrush current and preventing mechanical shock to the motor-especially critical for high-inertia loads like centrifugal fans.
MP6631GL-0000-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 26-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (3)
- Interface:
- PWM
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 3A
- Voltage - Supply:
- 3.6V ~ 24V
- Voltage - Load:
- 3.6V ~ 24V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 26-QFN (3x4)
MP6631GL-0000-P FAQ
1.How can I place an order for MP6631GL-0000-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6631GL-0000-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP6631GL-0000-P reliable?
The price and inventory of MP6631GL-0000-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6631GL-0000-P is usually 5 days.
3.What payment methods are accepted for MP6631GL-0000-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6631GL-0000-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6631GL-0000-P?
MP6631GL-0000-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6631GL-0000-P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP6631GL-0000-P?
For technical support, including MP6631GL-0000-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6631GL-0000-P requirements.
6.How does Aetrix verify that MP6631GL-0000-P is sourced from the original manufacturer or authorized distributors?
All MP6631GL-0000-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP6631GL-0000-P meets industry standards.
7.What is the process for return or replacement of MP6631GL-0000-P?
All MP6631GL-0000-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6631GL-0000-P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP6631GL-0000-P part is unused and in its original packaging.
Return procedure for MP6631GL-0000-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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