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MCT8314Z

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40V max, 1.5A peak, sensored-trapezoidal-control three-phase BLDC motor driver

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Data sheet

MCT8314Z

ACTIVE
Data sheet Order now

Product details

Rating Catalog Architecture Integrated FET Control topology Sensored, Trapezoidal Control interface 1xPWM Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features Active Demagnetization to reduce power losses, Analog or Digital Hall inputs, Code-free Hall sensor based trapezoidal (120°) commutation, Configurable PWM modulation: Synchronous/Asynchronous, Cycle-by-cycle current limit to limit phase current, Integrated protections: UVLO, Stand-alone operation (no external MCU needed), Supports up to 200-kHz PWM frequency Operating temperature range (°C) -40 to 125
Rating Catalog Architecture Integrated FET Control topology Sensored, Trapezoidal Control interface 1xPWM Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features Active Demagnetization to reduce power losses, Analog or Digital Hall inputs, Code-free Hall sensor based trapezoidal (120°) commutation, Configurable PWM modulation: Synchronous/Asynchronous, Cycle-by-cycle current limit to limit phase current, Integrated protections: UVLO, Stand-alone operation (no external MCU needed), Supports up to 200-kHz PWM frequency Operating temperature range (°C) -40 to 125
WQFN (RRW) 24 9 mm² 3 x 3
  • Three-phase BLDC motor driver with integrated sensored trapezoidal control
    • Hall Sensor based trapezoidal (120°) commutation
    • Supports analog or digital hall inputs
    • Configurable PWM modulation: synchronous/asynchronous
    • Cycle-by-cycle current limit to limit phase current
    • Supports up to 100-kHz PWM frequency
    • Automatic synchronous rectification to reduce power losses
  • 5.0-V to 35-V operating voltage (40-V abs max)
  • High output current capability: 1.5-A Peak
  • Low MOSFET on-state resistance
    • 575-mΩ RDS(ON) (HS + LS) at TA = 25°C
  • Low-power sleep mode
    • 1.5-µA at VVM = 24-V, TA = 25°C
  • Integrated current limiting eliminates external current sense resistors
  • Flexible device configuration options
    • MCT8314ZS: 5-MHz 16-bit SPI interface for device configuration and fault status
    • MCT8314ZH: Hardware pin-based configuration
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Built-in 5-V (5%), 30-mA LDO regulator
  • A suite of integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Motor lock protection
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over SPI
  • Three-phase BLDC motor driver with integrated sensored trapezoidal control
    • Hall Sensor based trapezoidal (120°) commutation
    • Supports analog or digital hall inputs
    • Configurable PWM modulation: synchronous/asynchronous
    • Cycle-by-cycle current limit to limit phase current
    • Supports up to 100-kHz PWM frequency
    • Automatic synchronous rectification to reduce power losses
  • 5.0-V to 35-V operating voltage (40-V abs max)
  • High output current capability: 1.5-A Peak
  • Low MOSFET on-state resistance
    • 575-mΩ RDS(ON) (HS + LS) at TA = 25°C
  • Low-power sleep mode
    • 1.5-µA at VVM = 24-V, TA = 25°C
  • Integrated current limiting eliminates external current sense resistors
  • Flexible device configuration options
    • MCT8314ZS: 5-MHz 16-bit SPI interface for device configuration and fault status
    • MCT8314ZH: Hardware pin-based configuration
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Built-in 5-V (5%), 30-mA LDO regulator
  • A suite of integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Motor lock protection
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over SPI

The MCT8314Z provides a single-chip, code-free sensored trapezoidal commutation device for customers driving 12- to 24-V brushless-DC motors. The MCT8314Z integrates three 1/2-H bridges with 40-V absolute maximum capability and a low RDS(ON) of 575-mΩ (high-side and low-side combined) to enable high power drive capability. The integrated current limiting feature limits motor currents during start-up or high load conditions while eliminating the need for external sense resistors. An integrated 5-V LDO generates the necessary voltage rail for the device and can power external circuits.

MCT8314Z implements sensored trapezoidal control in a fixed-function state machine, so an external microcontroller is not required to spin the brushless DC motor. The MCT8314Z device integrates three analog Hall comparators for position sensing to achieve sensored trapezoidal BLDC motor control. The control scheme is highly configurable through hardware pins or registers settings ranging from motor current limiting behavior to fault response. The speed can be controlled through a PWM input.

There are a large number of protection features integrated into the MCT8314Z that are designed to protect the device, motor, and system against fault events.

Refer Application Information for design consideration and recommendation on device usage.

The MCT8314Z provides a single-chip, code-free sensored trapezoidal commutation device for customers driving 12- to 24-V brushless-DC motors. The MCT8314Z integrates three 1/2-H bridges with 40-V absolute maximum capability and a low RDS(ON) of 575-mΩ (high-side and low-side combined) to enable high power drive capability. The integrated current limiting feature limits motor currents during start-up or high load conditions while eliminating the need for external sense resistors. An integrated 5-V LDO generates the necessary voltage rail for the device and can power external circuits.

MCT8314Z implements sensored trapezoidal control in a fixed-function state machine, so an external microcontroller is not required to spin the brushless DC motor. The MCT8314Z device integrates three analog Hall comparators for position sensing to achieve sensored trapezoidal BLDC motor control. The control scheme is highly configurable through hardware pins or registers settings ranging from motor current limiting behavior to fault response. The speed can be controlled through a PWM input.

There are a large number of protection features integrated into the MCT8314Z that are designed to protect the device, motor, and system against fault events.

Refer Application Information for design consideration and recommendation on device usage.

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* Data sheet MCT8314Z Sensored Trapezoidal Integrated FET BLDC Motor Driver datasheet (Rev. A) PDF | HTML 07 Jun 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

MCT8314ZEVM — MCT8314Z evaluation module

The MCT8314Z evaluation module (EVM) allows users to evaluate the performance of the MCT8314Z motor driver. The EVM includes an onboard FTDI chip to convert USB communication from the micro-USB connector into UART. An onboard MSP430FR2355 microcontroller (MCU) translates the UART communication and (...)
User guide: PDF | HTML
Not available on TI.com
Firmware

MCT8314ZEVM-MSP430FR2355-FW — MSP430 firmware for MCT8314ZEVM compatibility with MCT8314Z GUI

MSP430 firmware for MCT8314ZEVM compatibility with MCT8314Z GUI
Supported products & hardware

Supported products & hardware
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GUI for evaluation module (EVM)

MCT8314Z-GUI — GUI for the MCT8314ZEVM

GUI used to evaluate the MCT8314Z on the MCT8314ZEVM
Supported products & hardware

Supported products & hardware
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Gerber file

MCT8314ZEVM Hardware Design Files

SNLR052.ZIP (7161 KB)
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Package Pins CAD symbols, footprints & 3D models
WQFN (RRW) 24 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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