NXP Semiconductors BLDC User manual

© 2020 NXP B.V.
BLDC Control Demo User's Guide
1. Introduction
This document provides instructions for running and
controlling the Brushless DC (BLDC) sensorless
application with the Freedom and Tower System
development boards shown in Table 1.
The required software, hardware setup, jumper settings,
project arrangement, and user interface is described in
the following sections. For more information, see
Section 9, “References” or visit
www.nxp.com/motorcontrol_bldc.
NXP Semiconductors
Document Number: BLDCDEMO
UG
User's Guide
Rev.
6
,
06/2020
Contents
1. Introduction ........................................................................1
2. Supported development boards...........................................2
3. Motor Control vs. SDK Peripheral Drivers ........................2
4. Hardware setup ...................................................................2
4.1. Linix 45ZWN24-40 motor.......................................3
4.2. MIGE 60CST-MO1330 motor ................................3
4.3. Tower System..........................................................4
4.4. Tower System assembly ..........................................8
4.5. Freedom development platform...............................9
4.6. High-Voltage Platform ..........................................15
5. Project file structure..........................................................15
6. User Interface ...................................................................17
6.1. Control button........................................................17
6.2. Remote control using FreeMASTER.....................17
7. Instructions .......................................................................21
7.1. Running the motor.................................................21
7.2. Stopping the motor ................................................21
7.3. Clearing a fault ......................................................21
7.4. Turning on demonstration mode............................21
8. Acronyms and abbreviations ............................................21
9. References ........................................................................22
10. Revision history................................................................22

Hardware setup
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2. Supported development boards
There are three supported development boards with two Kinetis KV series motor-control MCUs for
motor-control applications. The development boards and supported MCUs are shown in Table 1.
The Tower System modular development platform and the Freedom development platform are targeted
for low-voltage and low-power applications with BLDC control type. The High-Voltage Platform
(HVP) is designed to drive high-voltage (115/220 V) applications with up to 1 kW of power.
Table 1. Supported development boards
—
Platform
FRDM TWR HVP
Power stage FRDM-MC-LVBLDC TWR-LV3PH HVP-MC3PH
MCU
KV11 FRDM-KV11Z — —
KV31 FRDM-KV31F — HVP-KV31F512
KV46 — TWR-KV46F150M HVP-KV46F150
KV58 — TWR-KV58F220M HVP-KV58F220M
KE15Z FRDM-KE15Z — —
KE18F — TWR-KE18F HVP-KE18F
KE16Z FRDM-KE16Z — —
3. Motor Control vs. SDK Peripheral Drivers
The motor-control examples use the SDK peripheral drivers to configure the general peripherals (such as
clocks, SPI, SIM, and ports). However, motor control requires critical application timing because most
control algorithms run in a 50-µs loop. To optimize the CPU load, most peripheral-hardware features are
implemented for the PWM signal generation, analog signal sampling, and synchronization between the
PWM and ADC units.
The standard SDK peripheral drivers do not support the configuration and handling of all required
features. The motor-control drivers are designed to configure the critical MC peripherals (eflexPWM,
FTM, ADC, and PDB).
It is highly recommended not to modify the default configuration of the allocated MC peripherals due to
a possible application-timing conflict. The particular mcdrv_< board&MCU >.c source file contains
configuration functions of allocated peripherals.
4. Hardware setup
The BLDC sensorless application runs on Tower System and Freedom development platforms with a
default 24-V Linix motor.

Hardware setup
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NXP Semiconductors 3
4.1. Linix 45ZWN24-40 motor
The BLDC sensorless application uses the Linix 45ZWN24-40 motor described in Table 2. The motor
can be used with the Tower System or Freedom development platforms.
Table 2. Linix 45ZWN24-40 motor parameters
Characteristic Symbol Value Units
Rated Voltage
Vt
24
V
Rated Speed @ Vt
—
4000
RPM
Rated Torque
T
0.0924
Nm
Rated Power
P
40
W
Continuous Current
Ics
2.34
A
Number of Pole Pairs
pp
2
—
Figure 1. Linix motor 45ZWN24-40
The motor has two types of cable connectors. One cable has three wires and it is designated to power the
motor. The second cable has five wires and it is designated for the Hall sensors signal sensing. Only the
power input wires are needed for the BLDC sensorless application.
4.2. MIGE 60CST-MO1330 motor
The MIGE 60CST-MO1330 motor (described in Table 3) is primarily used for the Permanent Magnet
Synchronous Motor (PMSM) sensorless application but you can also use it for the BLDC sensorless
application. You can also adapt the application to other motors by defining and changing the motor-
related parameters. The motor is connected directly to the high-voltage development board via a flexible
cable connected to the 3-wire development board connector.
Table 3. MIGE 60CST-MO1330 motor parameters
Characteristic Symbol Value Units
Rated voltage
Vt
220
V
Rated speed @ Vt
—
3000
RPM
Rated power
P
400
W
Number of pole pairs
Pp
4
—

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Figure 2. MIGE motor
4.3. Tower System
To run the BLDC application using the Tower System, these Tower boards are required:
•Tower board with a Kinetis V series MCU (TWR-KV46F150M or TWR-KV58F220M).
•Tower board with Kinetis E series MCU (TWR-KE18F).
•3-Phase Low-Voltage Motor Control module (see TWR-MC-LV3PH) including the Linix
motor.
•Tower System elevator modules (see TWR-ELEV).

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4.3.1. TWR-MC-LV3PH module
The 3-Phase Low-Voltage Motor Control module (TWR-MC-LV3PH) is a peripheral Tower System
module, interchangeable across the Tower System. The phase voltage and current feedback signals are
provided. These signals enable a variety of algorithms to control the 3-phase PMSM and BLDC motors.
A high level of board protection (over-current, under-voltage, over-temperature) is provided by the
MC33937 pre-driver. Before you insert the TWR-MC-LV3PH module into the Tower System, ensure
that the jumpers on your TWR-MC-LV3PH module are configured as follows:
Table 4. TWR-MC-LV3PH jumper settings
Jumper Setting Function
J2
1-2
Selects the internal analog power supply.
J3
1-2
Selects the internal analog power reference (GND).
J10
2-3
Selects BEMF_SENSE_C.
J11
2-3
Selects BEMF_SENSE_B.
J12
2-3
Selects BEMF_SENSE_A.
J13
2-3
Selects I_SENSE_DCB.
J14
2-3
Selects V_SENSE_DCB_HALF.
Figure 3. TWR-LV-MC3PH jumper settings

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4.3.2. TWR-KV46F150M MCU module
Configure the jumpers on the TWR-KV46F150 and TWR-MC-LV3PH modules properly. Table 7 lists
the relevant jumpers and their settings for the TWR-KV46F150 MCU module:
Table 5. TWR-KV46F jumper settings
Jumper Setting Jumper Setting Jumper Setting
J1
open
J16
open
J505
3-4
J2
open
J19
open
J506
3-4
J4
2-3
J20
1-2
J512
1-2
J5
1-2
J21
open
J514
2-3
J13
1-2, 3-4
J23
open
J517
2-3
J15 1-2 — —
J519
J520
J521
J522
3-4
1-2
1-2
1-2
Figure 4. TWR-KV46F150M MCU module

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4.3.3. TWR-KV58F Tower System module
The TWR-KV58F220M is a development module for the Kinetis KV5x family of MCUs built around
the Arm®Cortex®-M7 core. This MCU has enough power for use in multi-motor control applications
(such as the PMSM or BLDC motors with simple or advanced control techniques). The MCU has a wide
range of motor-control peripherals, lots of memory (depending on the model used), and a powerful core.
To begin, configure the jumpers on the TWR-KV58F220M and TWR-MC-LV3PH Tower System
modules properly. Table 8 lists the specific jumpers and their settings for the TWR-KV58F220M Tower
System module:
Table 6. TWR-KV58F jumper settings
Jumper Setting Jumper Setting Jumper Setting
J1
1-2
J11
1-2
J23
2-3
J2
open
J12
1-2
J24
2-3
J3
1-2
J14
open
J25
2-3
J4
1-2
J17
open
J26
2-3
J7
1-2
J18
open
J28
1-2
J8
1-2
J19
open
J29
open
J9
open
J20
open
J30
1-2, 3-4, 5-6, 7-8
J10
1-2
J21
1-2
—
—
Figure 5. TWR-KV58F Tower System module

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4.3.4. TWR-KE18F Tower System module
The TWR-KE18F is a development tool for the NXP Kinetis KE1x family of MCUs built around the
Arm Cortex-M4 core. This MCU has enough power for use in motor-control applications (such as
PMSM or BLDC motors with simple or advanced control techniques). The MCU has a wide range of
peripherals, lots of memory (depending on the model used), and a powerful core.
To begin, configure the jumpers on the TWR-KE18F and TWR-MC-LV3PH Tower System modules
properly. Table 9 lists the specific jumpers and their settings for the TWR-KE18F Tower System
module.
Table 7. TWR-KE18F jumper settings
Jumper Setting Jumper Setting Jumper Setting
J3
2-3
J9
1-2
J18
1-2
J4
1-2
J11
1-2
J19
1-2
J5
2-3
J12
1-2
J21
open
J6
1-2
J13
1-2
J22
1-2
J7
1-2
J16
1-2
J23
Open
J8
open
J17
1-2
J24
1-2
Figure 6. TWR-KE18F Tower System module
4.4. Tower System assembly
1. Insert the TWR-KVxxXxx MCU module and the TWR-MC-LV3PH module into the
TWR-ELEV card slots. Ensure that the primary sides of the modules (marked by white stripes)
are inserted into the primary elevator card (marked by white connectors).
2. After assembling the Tower System, connect the required cables as follows:

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•Connect the power input cable (3-wire connector) of the Linix motor to its corresponding
connector (J5) on the TWR-MC-LV3PH motor control driver board.
•Plug in the power supply cable that is attached to the TWR-MC-LV3PH system kit to the
motor control peripheral board TWR-MC-LV3PH.
•Connect the TWR MCU module to the host PC via a USB cable.
Figure 7. Assembled Tower System
4.5. Freedom development platform
To run the BLDC application using Freedom, you need these Freedom boards:
•Kinetis KV11Z Freedom board (see FRDM-KV11Z), Kinetis KV31F Freedom board
(see FRDM-KV31F), Kinetis KE15Z, or Kinetis KE16Z Freedom board.
•3-Phase Low-Voltage Power Freedom shield (see FRDM-MC-LVBLDC) including the
Linix motor.

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4.5.1. FRDM-MC-LVBLDC low-voltage evaluation board
The FRDM-MC-LVBLDC low-voltage evaluation board (in a shield form factor) effectively turns the
Freedom development platform into a complete motor-control reference design compatible with the
existing Freedom development platforms (FRDM-KV31F, FRDM-KV11Z, FRDM-KE15Z, and
FRDM-KE16Z).
The FRDM-MC-LVBLDC board does not require any hardware configuration or jumper settings.
It contains no jumpers.
Figure 8. FRDM-MC-LVBLDC