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Texas Instruments MCF8316D Sensorless FOC BLDC Drivers

Texas Instruments MCF8316D Sensorless Field Oriented Control (FOC) Brushless-DC (BLDC) Drivers are single-chip devices for users driving speed-controlled 12V to 24V BLDC motors. These drivers integrate three half-bridges with 40V absolute maximum capability and a very low RDS(ON) of 95mΩ (high-side + low-side FETs). The MCF8316D drivers integrate power management circuits such as a voltage-adjustable buck regulator and a Low-Dropout (LDO) regulator that can be used to power external circuits. These drivers feature 8A peak high output current capability, 3% speed loop accuracy with an internal clock, and a dedicated DRVOFF pin to disable (Hi-Z) outputs. The MCF8316D drivers are used in applications such as small home appliances, dishwasher pumps, BLDC motor modules, and air purifiers.

The FOC algorithm is implemented in a fixed-function state machine, so no coding is required. The algorithm configuration is stored in non-volatile EEPROM, which allows the driver to function in stand-alone mode once the driver is configured. The MCF8316D drivers receive the speed command through an analog voltage, PWM input, frequency input, or I2C command.

Features

  • Three-phase BLDC motor driver with integrated sensorless motor control algorithm:
    • Code-free Field Oriented Control (FOC)
    • Speed, current, power, and voltage control
    • Forward and reverse windmilling support
    • Configurable power and speed limit
    • Lead angle adjustment for high efficiency
    • Improved acoustic performance with soft-start, soft-stop, and dead time compensation
    • Offline motor parameter measurement with Motor Parameter Extraction Tool (MPET)
    • Analog, PWM, frequency, or I2C based speed input
    • Configurable motor start-up and stop options
    • Flux weakening for high-speed operation
    • Anti-Voltage Surge (AVS) protection
    • Variable monitoring through DACOUT pins
  • RDS(ON) (H+L) low MOSFET on-state resistance at TA=25°C: 95mΩ (typical)
  • 4.5 to 35V operating voltage (40V absolute maximum)
  • 3% speed loop accuracy with internal clock and 1% with external clock reference
  • Configurable EEPROM with R/W security to store device configuration
  • Do not require external current sense resistors and use built-in current sensing
  • Built-in 3.3V and 20mA LDO regulator
  • Built-in 3.3V/5V and 170mA buck regulator
  • Dedicated DRVOFF pin to disable (Hi-Z) outputs
  • Spread spectrum, PWM dithering, and slew rate for EMI reduction
  • Suite of integrated protection functions:
    • Supply Under Voltage Lockout (UVLO)
    • Supply Over Voltage protection (OVP)
    • Motor lock detection
    • Configurable current limit
    • Thermal warning and shutdown (OTW/TSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over I2C interface

Applications

  • Dishwasher pumps
  • Air purifiers
  • Humidifier fans
  • Small home appliances
  • Residential and living fans
  • BLDC motor modules

Block Diagram

Block Diagram - Texas Instruments MCF8316D Sensorless FOC BLDC Drivers

Simplified Schematic Diagram

Schematic - Texas Instruments MCF8316D Sensorless FOC BLDC Drivers

Development Tool

Texas Instruments MCF8316DEVM Motor Driver Evaluation Module

This module enables users to evaluate the performance of the MCF8316D motor driver.

Learn Moreacerca de Texas Instruments MCF8316DEVM Motor Driver Evaluation Module View Productsrelacionado con Texas Instruments MCF8316DEVM Motor Driver Evaluation Module
Publicado: 2025-01-21 | Actualizado: 2025-07-03