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MP6541A 4.75-40V, 8A Three-Phase Power Stage QFN-26
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pMPS MP6541A — Three-Phase Power Stage, 4.75-40V input, 8 A output, QFN-26./p
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MP6541A 4.75-40V, 8A Three-Phase Power Stage QFN-26
The MPS MP6541A is a Three-Phase Power Stage. It operates from a 4.75 V to 40 V input and is rated for 8 A. It is supplied in a QFN-26 package.
The MP6541 and MP6541A are three-phase brushless DC (BLDC) motor drivers with three integrated half-bridges, consisting of six N- channel power MOSFETs.
Key Specifications
| Part Number | MP6541A |
| Function | Three-Phase Power Stage |
| Input Voltage | 4.75 V to 40 V |
| Current Rating | 8 A |
| Interface | PWM |
| Package | QFN-26 |
| Ordering Codes | MP6541A |
Features
- 4.75V to 40V Operating Supply Voltage
- Three Integrated Half-Bridge Drivers
- 8A Continuous Output Current (IOUT)
- MOSFET On Resistance: 15mΩ per FET
- MP6541: PWM and ENBL Inputs MP6541A: High-Side (HS) and Low-Side (LS) Inputs
- Internal Charge Pump Supports 100% Duty Cycle Operation
- Automatic Synchronous Rectification
- Under-Voltage Lockout (UVLO) and Over- Voltage Protection (OVP)
- Thermal Shutdown Protection
- Over-Current Protection (OCP)
Typical Application Circuit
Applications
- Brushless DC (BLDC) Motor Drives
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 MP6541A support?
4.75 V to 40 V. The rated output is 8 A.
Which package and ordering codes apply to the MP6541A?
QFN-26; order codes include MP6541A.
What are the defining features of the MP6541A?
4.75V to 40V Operating Supply Voltage Three Integrated Half-Bridge Drivers
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