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MPQ6634-AEC1 4.5-35V, 2A Sensorless BLDC Motor Driver QFN-12
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pMPS MPQ6634-AEC1 — Sensorless BLDC Motor Driver, 4.5-35V input, 2 A output, QFN-12, AEC-Q100./p
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MPQ6634-AEC1 4.5-35V, 2A Sensorless BLDC Motor Driver QFN-12
The MPS MPQ6634-AEC1 is a Sensorless BLDC Motor Driver. It operates from a 4.5 V to 35 V input and is rated for 2 A. It is supplied in a QFN-12 package. The part is AEC-Q100 qualified.
The MPQ6634-AEC1 is a 3-phase, sensorless brushless DC (BLDC) motor driver with integrated power MOSFETs.
Key Specifications
| Part Number | MPQ6634-AEC1 |
| Function | Sensorless BLDC Motor Driver |
| Input Voltage | 4.5 V to 35 V |
| Current Rating | 2 A |
| Interface | PWM |
| Package | QFN-12 |
| Qualification | AEC-Q100 |
| Ordering Codes | MPQ6634-AEC1 |
Features
- 4.5V to 35V Operating Input Voltage (VIN) Range
- Up to Maximum 2A of Peak Current
- Sensorless Field-Oriented Control (FOC)
- Integrated MOSFETs: High-Side MOSFET (HS-FET) + Low-Side MOSFET (LS-FET) = 450mΩ
- Supports 0V to 3.3V DC Input or 50Hz to 20kHz Pulse-Width Modulation (PWM) Input
- Starting Duty Cycle Set with Hysteresis
- Curve Configurations
- Configurable Speed for Open-Loop and Closed-Loop Control
- Configurable Soft-Start Time
- Configurable Alignment Time
Typical Application Circuit
Applications
- Automotive Fans
- Air Purifiers
- General Fans
Design Notes
- Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
- Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
- The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
- PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
- Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.
Common Questions
What input voltage does the MPQ6634-AEC1 support?
4.5 V to 35 V. The rated output is 2 A.
Which package and ordering codes apply to the MPQ6634-AEC1?
QFN-12; order codes include MPQ6634-AEC1.
What are the defining features of the MPQ6634-AEC1?
4.5V to 35V Operating Input Voltage (VIN) Range Up to Maximum 2A of Peak Current
Is the MPQ6634-AEC1 qualified for automotive designs?
Yes — it is AEC-Q100 qualified. Confirm the grade against the qualification summary in the datasheet before specifying it on a safety-related rail.
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