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MCT8316A

ACTIVE

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

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Data sheet

MCT8316A

ACTIVE
Data sheet Order now

Product details

Rating Catalog Architecture Integrated FET Control topology Sensorless, Trapezoidal Control interface 1xPWM, Analog, Serial Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features 120 or 150 degree modulation for improved acoustic performance, Active Demag to reduce power losses, Code-free high speed sensored trapezoidal control, Configurable motor startup and stop options, Fast Deceleration (<150 ms), Fast startup time (<50 ms), Integrated protections UVLO,OCP,OTW-OTSD,AVS, Optional closed loop speed control, Stand-alone operation, Up to 3 kHz (electrical frequency), Variable monitoring through DACOUT, Windmilling support through forward resynchronization and reverse drive Operating temperature range (°C) -40 to 125
Rating Catalog Architecture Integrated FET Control topology Sensorless, Trapezoidal Control interface 1xPWM, Analog, Serial Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features 120 or 150 degree modulation for improved acoustic performance, Active Demag to reduce power losses, Code-free high speed sensored trapezoidal control, Configurable motor startup and stop options, Fast Deceleration (<150 ms), Fast startup time (<50 ms), Integrated protections UVLO,OCP,OTW-OTSD,AVS, Optional closed loop speed control, Stand-alone operation, Up to 3 kHz (electrical frequency), Variable monitoring through DACOUT, Windmilling support through forward resynchronization and reverse drive Operating temperature range (°C) -40 to 125
VQFN (RGF) 40 35 mm² (7 mm × 5 mm)
  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm
    • Code-free high speed Trapezoidal Control
    • Supports upto 3 kHz (electrical frequency)
    • Very fast startup time (<50 ms)
    • Fast Deceleration (<150 ms)
    • Supports 120° or 150° modulation to improve acoustic performance
    • Windmilling support through forward resynchronization and reverse drive
    • Analog, PWM, freq. or I2C based speed input
    • Active Demagnetization to reduce power losses
    • Configurable motor startup and stop options
    • Optional closed loop speed control
    • Anti-voltage surge protections prevents overvoltage
    • 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
  • Flexible device configuration options
    • MCT8316AV: I2C interface (EEPROM)
    • MCT8316AT: Hardware pin based configuration
  • Supports up to 100-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistor
  • Built-in 3.3-V ±5%, 20-mA LDO regulator
  • Built-in 3.3-V/5-V, 170-mA buck regulator
  • Dedicated DRVOFF pin to disable (Hi-Z) outputs
  • Spread spectrum and slew rate for EMI mitigation
  • Suite of Integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Motor lock detection (5 different types)
    • Overcurrent protection (OCP)
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I2C interface
  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm
    • Code-free high speed Trapezoidal Control
    • Supports upto 3 kHz (electrical frequency)
    • Very fast startup time (<50 ms)
    • Fast Deceleration (<150 ms)
    • Supports 120° or 150° modulation to improve acoustic performance
    • Windmilling support through forward resynchronization and reverse drive
    • Analog, PWM, freq. or I2C based speed input
    • Active Demagnetization to reduce power losses
    • Configurable motor startup and stop options
    • Optional closed loop speed control
    • Anti-voltage surge protections prevents overvoltage
    • 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
  • Flexible device configuration options
    • MCT8316AV: I2C interface (EEPROM)
    • MCT8316AT: Hardware pin based configuration
  • Supports up to 100-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistor
  • Built-in 3.3-V ±5%, 20-mA LDO regulator
  • Built-in 3.3-V/5-V, 170-mA buck regulator
  • Dedicated DRVOFF pin to disable (Hi-Z) outputs
  • Spread spectrum and slew rate for EMI mitigation
  • Suite of Integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Motor lock detection (5 different types)
    • Overcurrent protection (OCP)
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I2C interface

The MCT8316A provides a single-chip, code-free sensorless trapezoidal solution for customers requiring high speed operation (up to 3kHz electrical) or very fast startup time (<50ms) for 12- to 24-V brushless-DC motors up to 8-A peak current. The MCT8316A integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95 mΩ (high-side + low-side). 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.

Sensorless trapezoidal control is highly configurable through register settings (MCT8316AV) or hardware pins (MCT8316AT) ranging from motor start-up behavior to closed loop operation. Register settings for MCT8316AV 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, variable frequency square wave or I2C command. There are a large number of protection features integrated into the MCT8316A, intended to protect the device, motor, and system against fault events.

Documentation for reference:

The MCT8316A provides a single-chip, code-free sensorless trapezoidal solution for customers requiring high speed operation (up to 3kHz electrical) or very fast startup time (<50ms) for 12- to 24-V brushless-DC motors up to 8-A peak current. The MCT8316A integrates three 1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95 mΩ (high-side + low-side). 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.

Sensorless trapezoidal control is highly configurable through register settings (MCT8316AV) or hardware pins (MCT8316AT) ranging from motor start-up behavior to closed loop operation. Register settings for MCT8316AV 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, variable frequency square wave or I2C command. There are a large number of protection features integrated into the MCT8316A, intended to protect the device, motor, and system against fault events.

Documentation for reference:

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet MCT8316A High Speed Sensorless Trapezoidal Control Integrated FET BLDC Driver datasheet (Rev. B) PDF | HTML Feb 8, 2022
Application note How to Program I2C for MCx83xx Device Family PDF | HTML Mar 24, 2025
Application note Motor Pre-Startup Tuning for MCx83xx PDF | HTML Mar 24, 2025
Application note MCF83xx and MCT83xx EEPROM Read and Write Procedure PDF | HTML Mar 13, 2025
Technical article How motor drive innovations are helping solve robotic movement design challenges PDF | HTML Jan 5, 2024
Technical article Top 3 ways to reduce audible noise in motion control applications PDF | HTML Dec 21, 2023
Application brief MCx8316x for Vacuum Robot Applications PDF | HTML Sep 9, 2022
Application note MCT8316A - Design Challenges and Solution PDF | HTML Jun 22, 2022
Certificate MCT8316AEVM EU RoHS Declaration of Conformity (DoC) Apr 7, 2022
Technical article What is “real-time control” and why do you need it? PDF | HTML Apr 6, 2022
User guide MCT8316A Tuning Guide (Rev. A) PDF | HTML Dec 20, 2021
Application note MCF8316A - Design Challenges and Solutions PDF | HTML Nov 29, 2021
User guide MCT8316AT Tuning Guide PDF | HTML Sep 29, 2021
Technical article 3 ways to speed cycle time when designing with brushless-DC motors PDF | HTML Sep 7, 2021
Application note How to Reduce Motor Noise with Code-Free, Sensorless BLDC Motor Drivers PDF | HTML Aug 31, 2021
EVM User's guide MCT8316AEVM Evaluation Module User's Guide PDF | HTML Aug 30, 2021

Design & development

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Evaluation board

MCT8316AEVM — MCT8316 evaluation module for three-phase sensorless trapezoidal integrated MOSFET BLDC motor driver

The MCT8316 is three half-H-bridge integrated MOSFET drivers for sensorless trapezoidal control of a three-phase brushless DC (BLDC) motor for 4.5V-to-35V, 8A peak current drive. The MCx8316 integrates a buck regulator that can support 200mA with programmable regulated supply. This EVM includes (...)
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