Product details

Rating Catalog Architecture Integrated FET Control topology Field-oriented control (FOC), Sensorless Control interface 1xPWM, Analog, Serial Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features 5-point configurable speed profile support, Anti-voltage surge protections prevents overvoltage, Code-free Field Oriented Control (FOC), Configurable motor startup and stop options, Improved acoustic performance with automatic dead time compensation, Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET), 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 Field-oriented control (FOC), Sensorless Control interface 1xPWM, Analog, Serial Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Features 5-point configurable speed profile support, Anti-voltage surge protections prevents overvoltage, Code-free Field Oriented Control (FOC), Configurable motor startup and stop options, Improved acoustic performance with automatic dead time compensation, Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET), 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 x 5
  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm
    • Code-free Field Oriented Control (FOC)
    • Analog, PWM and freq. based speed input modes: available only when MCF8315A is configured as a standby device (DEV_MODE = 0b)
    • I 2C based speed input mode: available in both sleep (DEV_MODE = 1b) and standby devices (DEV_MODE = 0b).
    • Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET)
    • 5-point configurable speed profile support
    • Windmilling support through forward resynchronization and reverse drive
    • Anti-voltage surge (AVS) protection
    • Improved acoustic performance with automatic dead time compensation
  • 4.5- to 35-V operating voltage (40-V abs max)
  • High output current capability: 4-A peak
  • Low MOSFET on-state resistance
    • R DS(ON) (HS + LS) at T A = 25°C : 240-mΩ (typ.)
  • Low power sleep mode : Refer
    • 5-µA (maximum) at V VM = 24-V, T A = 25°C
  • Speed loop accuracy: 3% with internal clock and 1% with external clock reference
  • Supports up to 75-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistors; uses built-in current sensing
  • Built-in 3.3-V, 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 under voltage lockout (UVLO)
    • Supply over voltage protection (OVP)
    • Motor lock detection (5 different types)
    • Over current protection (OCP)
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I 2C interface
  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm
    • Code-free Field Oriented Control (FOC)
    • Analog, PWM and freq. based speed input modes: available only when MCF8315A is configured as a standby device (DEV_MODE = 0b)
    • I 2C based speed input mode: available in both sleep (DEV_MODE = 1b) and standby devices (DEV_MODE = 0b).
    • Offline motor parameters measurement with Motor Parameter Extraction Tool (MPET)
    • 5-point configurable speed profile support
    • Windmilling support through forward resynchronization and reverse drive
    • Anti-voltage surge (AVS) protection
    • Improved acoustic performance with automatic dead time compensation
  • 4.5- to 35-V operating voltage (40-V abs max)
  • High output current capability: 4-A peak
  • Low MOSFET on-state resistance
    • R DS(ON) (HS + LS) at T A = 25°C : 240-mΩ (typ.)
  • Low power sleep mode : Refer
    • 5-µA (maximum) at V VM = 24-V, T A = 25°C
  • Speed loop accuracy: 3% with internal clock and 1% with external clock reference
  • Supports up to 75-kHz PWM frequency for low inductance motor support
  • Does not require external current sense resistors; uses built-in current sensing
  • Built-in 3.3-V, 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 under voltage lockout (UVLO)
    • Supply over voltage protection (OVP)
    • Motor lock detection (5 different types)
    • Over current protection (OCP)
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I 2C interface

The MCF8315A provides a single-chip, code-free sensorless FOC solution for customers driving speed-controlled 12- to 24-V brushless-DC motors (BLDC) or Permanent Magnet Synchronous motor (PMSM) up to 4-A peak current. The MCF8315A integrates three ½-bridges with 40-V absolute maximum capability and a low R DS(ON) of 240 mΩ (high-side + low-side FETs). MCF8315A integrates power management circuits including an voltage-adjustable buck regulator (3.3 V / 5 V, 170-mA) and LDO (3.3 V / 20 mA) that can be used to power external circuits.

The FOC algorithm configuration can be stored 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 I 2C command. There are a large number of protection features integrated into the MCF8315A, intended to protect the device, motor, and system against fault events.

Documentation for reference:

The MCF8315A provides a single-chip, code-free sensorless FOC solution for customers driving speed-controlled 12- to 24-V brushless-DC motors (BLDC) or Permanent Magnet Synchronous motor (PMSM) up to 4-A peak current. The MCF8315A integrates three ½-bridges with 40-V absolute maximum capability and a low R DS(ON) of 240 mΩ (high-side + low-side FETs). MCF8315A integrates power management circuits including an voltage-adjustable buck regulator (3.3 V / 5 V, 170-mA) and LDO (3.3 V / 20 mA) that can be used to power external circuits.

The FOC algorithm configuration can be stored 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 I 2C command. There are a large number of protection features integrated into the MCF8315A, 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 MCF8315ASensorless Field Oriented Control (FOC)Integrated FET BLDC Driver datasheet (Rev. A) PDF | HTML 14 Apr 2023
Technical article Selecting the right level of integration to meet motor design requirements PDF | HTML 04 Jan 2024
Technical article Top 3 ways to reduce audible noise in motion control applications PDF | HTML 21 Dec 2023
Application note How to Use the MCF831x to Solve Thermal and Quick Startup Challenges (Rev. A) PDF | HTML 20 Oct 2023
Application note Selection Guide for MCF831x Devices PDF | HTML 26 Apr 2023
User guide MCF8315A Tuning Guide PDF | HTML 03 Jan 2023
Certificate MCF8315EVM EU RoHS Declaration of Conformity (DoC) 21 Dec 2022
Technical article How to achieve efficient, reliable and accurate actuation in real-time motor contr PDF | HTML 25 Oct 2022

Design & development

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

Evaluation board

MCF8315EVM — MCF8315 evaluation module for three-phase sensorless FOC integrated MOSFET BLDC motor driver

The MCF8315 has three half-H-bridge integrated MOSFET drivers for sensorless FOC control of a three-phase brushless DC (BLDC) motor for 4.5-V to 35-V,  5-A peak current drive. The MCx8315 integrates a buck regulator that can support 200-mA with programmable regulated supply.

EVM includes an (...)

User guide: PDF | HTML
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GUI for evaluation module (EVM)

MOTORSTUDIO Motor Studio GUI for tuning and evaluating BLDC motor drivers

Motor Studio is an easy-to-use graphical user interface (GUI) that simplifies the tuning process of our brushless DC (BLDC) motor drivers to reduce device evaluation and product development time. The GUI allows users to quickly spin up their motors and optimize various stages of motor operation to (...)

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Supported products & hardware

Supported products & hardware

Products
Integrated control BLDC drivers
MCF8316A 40-V max, 8-A peak, sensorless FOC control 3-phase BLDC motor driver MCF8315A 40-V max, 4-A peak, sensorless FOC control three-phase BLDC motor driver MCF8329A 60-V, sensorless, field-oriented control (FOC) three-phase BLDC gate driver MCF8316C-Q1 Automotive, 40-V max, 8-A peak, sensorless field oriented control (FOC) 3-phase BLDC motor driver
Hardware development
Evaluation board
MCF8316AEVM MCF8316A three-phase sensorless FOC BLDC motor driver evaluation module MCF8315EVM MCF8315 evaluation module for three-phase sensorless FOC integrated MOSFET BLDC motor driver MCF8329EVM MCF8329 evaluation module for 60-V, sensorless FOC three-phase BLDC gate driver
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