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MCT8315Z

ACTIVE

40-V max, 4-A peak, sensored trapezoidal control 3-phase BLDC motor driver

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Data sheet

MCT8315Z

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 (RRY) 32 24 mm² 6 x 4
  • 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 200-kHz PWM frequency
    • Active demagnetization to reduce power losses
  • 4.5-V to 35-V operating voltage (40-V abs max)
  • High output current capability: 4-A Peak
  • Low MOSFET on-state resistance
    • 275-mΩ (typ.) RDS(ON) (HS + LS) at TA = 25°C
  • Low power sleep mode
    • 2.5-µA (max.) at VVM = 24-V, TA = 25°C
  • Integrated current limiting eliminates external current sense resistors
  • Flexible device configuration options
    • MCT8315ZR: 5-MHz 16-bit SPI interface for device configuration and fault status
    • MCT8315ZH: Hardware pin based configuration with buck
    • MCT8315ZT: Hardware pin based configuration without buck
  • Supports 1.8-V, 3.3-V and 5-V logic inputs
  • Built-in 3.3-V/5-V, 200-mA buck regulator
  • Built-in 3.3-V, 30-mA LDO regulator
  • Delay compensation reduces duty cycle distortion
  • Suite of integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Motor lock protection
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over SPI interface
  • 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 200-kHz PWM frequency
    • Active demagnetization to reduce power losses
  • 4.5-V to 35-V operating voltage (40-V abs max)
  • High output current capability: 4-A Peak
  • Low MOSFET on-state resistance
    • 275-mΩ (typ.) RDS(ON) (HS + LS) at TA = 25°C
  • Low power sleep mode
    • 2.5-µA (max.) at VVM = 24-V, TA = 25°C
  • Integrated current limiting eliminates external current sense resistors
  • Flexible device configuration options
    • MCT8315ZR: 5-MHz 16-bit SPI interface for device configuration and fault status
    • MCT8315ZH: Hardware pin based configuration with buck
    • MCT8315ZT: Hardware pin based configuration without buck
  • Supports 1.8-V, 3.3-V and 5-V logic inputs
  • Built-in 3.3-V/5-V, 200-mA buck regulator
  • Built-in 3.3-V, 30-mA LDO regulator
  • Delay compensation reduces duty cycle distortion
  • Suite of integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Motor lock protection
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over SPI interface

The MCT8315Z provides a single-chip, code-free sensored trapezoidal solution for customers driving 12-V/24-V brushless-DC motors; no external microcontroller is needed to spin the BLDC motor. The MCT8315Z integrates three ½ -bridges with 40-V absolute maximum capability and a low RDS(ON) of 275 mΩ (HS+ LS) 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. MCT8315Z provides an output voltage adjustable buck regulator and an LDO that can be used to power external circuits. MCT8315Z 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 register settings ranging from motor current limiting behavior to advance angle. The speed can be controlled through a PWM input.

A number of protection features including supply undervoltage lockout (UVLO), overvoltage protection (OVP), charge pump undervoltage (CPUV), overcurrent protection (OCP), over-temperature warning (OTW) and over-temperature shutdown (TSD) are integrated into MCT8315Z to protect the device, motor, and system against fault events. Fault conditions are indicated by the nFAULT pin.

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

The MCT8315Z provides a single-chip, code-free sensored trapezoidal solution for customers driving 12-V/24-V brushless-DC motors; no external microcontroller is needed to spin the BLDC motor. The MCT8315Z integrates three ½ -bridges with 40-V absolute maximum capability and a low RDS(ON) of 275 mΩ (HS+ LS) 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. MCT8315Z provides an output voltage adjustable buck regulator and an LDO that can be used to power external circuits. MCT8315Z 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 register settings ranging from motor current limiting behavior to advance angle. The speed can be controlled through a PWM input.

A number of protection features including supply undervoltage lockout (UVLO), overvoltage protection (OVP), charge pump undervoltage (CPUV), overcurrent protection (OCP), over-temperature warning (OTW) and over-temperature shutdown (TSD) are integrated into MCT8315Z to protect the device, motor, and system against fault events. Fault conditions are indicated by the nFAULT pin.

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

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet MCT8315Z Sensored Trapezoidal Integrated FET BLDC Motor Driver datasheet PDF | HTML 07 Dec 2023
Certificate MCT8315ZEVM EU Declaration of Conformity (DoC) 15 Nov 2023

Design & development

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

Evaluation board

MCT8315ZEVM — MCT8315Z evaluation module for three-phase sensored trapezoidal BLDC motor driver

The MCT8315Z is a 4.5V to 35V, 4A peak three-phase gate driver IC with sensored trapezoidal control for motor drive applications. The MCT8315Z provides three integrated half-bridges and a sensored trapezoidal control in a fixed-function state machine capable of directly driving a 3-phase brushless (...)
User guide: PDF | HTML
Not available on TI.com
Firmware

MCT8315ZEVM-MSP430FR2355-FW — MSP430FR2355 firmware for MCT8315ZEVM compatibility with MCT8315Z GUI

MSP430FR2355 firmware for MCT8315ZEVM compatibility with MCT8315Z GUI
Supported products & hardware

Supported products & hardware
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GUI for evaluation module (EVM)

MCT8315Z-GUI — GUI for the MCT8315ZEVM

GUI used to evaluate the MCT8315Z on the MCT8315ZEVM
Supported products & hardware

Supported products & hardware
Launch Download options
Gerber file

MCT8315ZEVM Hardware Design Files

SNLR049.ZIP (11049 KB)
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Package Pins CAD symbols, footprints & 3D models
WQFN (RRY) 32 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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