2 Introduction
The MCT8316A provides three half-H-bridge integrated MOSFET drivers with sensorless trapezoidal 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 trapezoidal control. Simplified schematic of MCT8316A is shown in
.
Figure 2-1. Simplified Schematic of MCT8316A
This tuning guide provides the steps to tune a 3-phase BLDC motor using the MCT8316A. 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 MCT8316_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.
Introduction
2
MCT8316A Tuning Guide
SLLU336 – MAY 2021
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