40-V max, 8-A peak, sensorless FOC control 3-phase BLDC motor driver


Product details


Rating Catalog Control method Field Oriented Control (FOC) Architecture Integrated FET Control interface 1xPWM, Analog, Serial RDS(ON) (HS + LS) (mOhms) 95 Peak output current (A) 8 Vs (Min) (V) 4.5 Vs ABS (Max) (V) 40 Features Integrated Motor Control, Integrated FETs, Buck Step Down Converter, LDO, SPI/I2C, Initial Position Detect (IPD), Rotor Lock Protection, Tach/FG Feedback, Slew Rate Adjustment Operating temperature range (C) -40 to 125 open-in-new Find other Brushless DC (BLDC) motor drivers

Package | Pins | Size

VQFN (RGF) 40 35 mm² 7 x 5 open-in-new Find other Brushless DC (BLDC) motor drivers


  • Three-phase BLDC motor driver with integrated motor control algorithm
    • Code-free Field Oriented Control (FOC)
    • Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET)
    • 5-point configurable speed profile support
    • Windmilling support through forward resynchronization and reverse drive
    • Configurable motor startup and stop options
    • Anti-voltage surge protections prevents overvoltage
    • Improved acoustic performance with automatic dead time compensation
    • Variable monitoring through DACOUT
  • 4.5- to 35-V operating voltage (40-V abs max)
  • High output current capability: 8-A peak
  • Low MOSFET on-state resistance
    • 95-mΩ RDS(ON) (HS + LS) at TA = 25°C
  • Low power sleep mode
    • 3-µA (maximum) at VVM = 24-V, TA = 25°C
  • Speed loop accuracy: 3% with internal clock and 1% with external clock reference
  • Customer-configurable non-volatile memory (EEPROM) to store device configuration
  • Supports up to 75-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistors, built-in current sensing
  • Built-in 3.3-V ±5%, 20-mA LDO regulator
  • Built-in 3.3-V/5-V, 170-mA buck regulator
  • DRVOFF pin: Independent path to disable all MOSFETs
  • EMI improvements through SSM and slew rate control
  • Suite of Integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Motor lock detection (5 different types)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I2C interface
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The MCF8316A provides a single-chip code-free sensorless FOC solution for customers driving speed-controlled 12- to 24-V brushless-DC motors with 8-A peak current capability. The MCF8316A integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95mOhms (high-side plus low-side) to enable high power drive capability. Current is sensed using an integrated current sensing feature which eliminates the need for external sense resistors. Power management features of an adjustable buck regulator and LDO generate the 3.3-V or 5.0-V voltage rails for the device and can be used to power external circuits.

MCF8316A implements code-free Sensorless FOC, and so an external microcontroller is not required to spin the brushless-DC (BLDC) motor or Permanent Magnet Synchronous motor (PMSM). The algorithm configuration can be set in non-volatile EEPROM, which allows the device to operate stand-alone once it has been configured. The device receives a speed command through a PWM input, analog voltage, or I2C command.

There are a large number of protection features integrated into the MCF8316A, intended to protect the device, motor, and system against fault events.

Documentation for reference:

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Technical documentation

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Type Title Date
* Data sheet MCF8316A Sensorless Field Oriented Control (FOC) Integrated FET BLDC Driver datasheet Aug. 12, 2021
Technical article 3 ways to speed cycle time when designing with brushless-DC motors Sep. 07, 2021
Application note How to Reduce Motor Noise with Code-Free, Sensorless BLDC Motor Drivers Aug. 31, 2021
User guide MCF8316AEVM Evaluation Module User's Guide Jun. 07, 2021
User guide MCF8316A Tuning Guide May 20, 2021
Technical article A basic brushless gate driver design – part 3: integrated vs. discrete half bridges Dec. 16, 2020
Technical article Connectivity helps integrate intelligent motor control on a single MCU Jun. 06, 2018
Technical article Cut the power and complexity of your appliance designs Feb. 06, 2018

Design & development

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Hardware development

document-generic User guide
MCF8316A is a three half-H-bridge integrated MOSFET driver for sensorless FOC control of a three-phase brushless DC (BLDC) motor for 4.5-V to 35-V,  8-A Peak current drive. The MCx8316A integrates a buck regulator that can support 200-mA with programmable regulated supply. Includes an on-board (...)
  • GUI available with full configuration & control
  • Sensorless Field Oriented Control (FOC)
  • 4.5-V to 35-V operation with 8-A peak current drive
  • 95 mΩ (high-side plus low-side) integrated MOSFETs
  • On-board MSP430 handles connectivity with the PC & GUI

Design tools & simulation

SLLR119.ZIP (14936 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RGF) 40 View options

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