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2 Introduction
The MCF8316A provides three half-H-bridge integrated MOSFET drivers with sensorless FOC control to drive
a three-phase brushless DC (BLDC) motor at 12-V/24-V DC rails or battery powered applications. The device
integrates three current-sense amplifiers (CSA) with integrated current sense for sensing the three phase
currents of BLDC motors to achieve optimum FOC control. Simplified schematic of MCF8316A is shown in
Figure
2-1.
This tuning guide provides the steps to tune a 3-phase BLDC motor using the MCF8316A. The tuning process
is classified into two sections: Essential controls and Basic controls. This process is also detailed in the Guided
tuning section in the GUI.
•
Essential controls: Tuning steps to successfully spin the motor in closed loop.
•
Basic controls: Tuning steps to conform to use-case and explore features in the device.
2.1 Hardware and GUI Setup
Below are the items that are required to run through this tuning guide.
1. MCx8316AEVM Board.
2. A computer with the MCF8316A_GUI installed.
3. A motor to be tuned using this process. It will be good to have motor datasheet but it is not mandatory.
4. A DC Power Supply rated for the motor.
5. Basic lab equipment such as a Digital Multimeter (DMM), Oscilloscope, current probe and voltage probes.
2.1.1 Jumper Configuration
Ensure the hardware is configured according to the jumper configuration as shown in
indicate where jumpers should be installed on the EVM.
SLLU335A – AUGUST 2021 – REVISED JANUARY 2022
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4.5 V to 35 V
SPEED
MCF8316A
DIR
Three Phase Integrated
FET driver
BRAKE
Sensorless FOC
FG
Control
nFAULT
Buck Regulator
2
Optional I
C
Built-In Protection
Figure 2-1. Simplified Schematic of MCF8316A
Copyright © 2022 Texas Instruments Incorporated
OUTA
M
OUTB
OUTC
Figure
2-2. Red boxes
MCF8316A Tuning Guide
Introduction
3
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