MCP8024 TQFP
BLDC Motor Driver
Evaluation Board
User’s Guide
2013 Microchip Technology Inc.
DS50002233A
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ISBN: 9781620777800
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS50002233A-page 2
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Development Systems Customer Change Notification Service .......................... 10
Customer Support ............................................................................................... 10
Document Revision History ................................................................................. 10
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 What is the MCP8024 TQFP BLDC Motor Driver Evaluation Board? .......... 12
1.3 What the MCP8024 TQFP BLDC Motor Driver Evaluation Board
Kit Includes ............................................................................................. 12
Chapter 2. Installation and Operation
2.1 Introduction ................................................................................................... 13
2.2 Features ....................................................................................................... 13
2.3 Getting Started ............................................................................................. 14
2.3.1 Connections .............................................................................................. 14
2.3.2 Operating a Motor ..................................................................................... 17
2.3.3 Indicator LEDs ........................................................................................... 18
2.3.4 Test Points ................................................................................................ 18
2.3.5 User Program Data Logging and Communications ................................... 19
2.3.6 Re-Programming the dsPIC DSC PIM ...................................................... 19
2.3.7 Configuring the MCP8024 ......................................................................... 19
2.3.8 MCP8024 Status ....................................................................................... 21
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 23
A.2 Board – Schematic ....................................................................................... 24
A.3 Board – Top Silk Layer ................................................................................ 25
A.4 Board – Top Metal Layer ............................................................................. 26
A.5 Board – Mid1 Metal Layer ............................................................................ 27
A.6 Board – Mid2 Metal Layer ............................................................................ 28
A.7 Board – Bottom Metal Layer ........................................................................ 29
Appendix B. Bill of Materials (BOM)
2013 Microchip Technology Inc.
DS50002233A-page 3
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
Appendix C. Software
C.1 Selected Software Constants and Definitions .............................................. 35
C.2 dsPIC33FJ32MC204 PIM Port Usage ......................................................... 36
C.3 MPLAB X IDE Compiler Startup .................................................................. 37
C.4 MPLAB X IDE and PICkit 3 Programmer Exercise ...................................... 37
Worldwide Sales and Service .....................................................................................40
DS50002233A-page 4
2013 Microchip Technology Inc.
Object of Declaration: MCP8024 TQFP BLDC Motor Driver Evaluation Board
2013 Microchip Technology Inc.
DS50002233A-page 5
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
NOTES:
DS50002233A-page 6
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
For the most up-to-date information on development tools, see the MPLAB® IDE on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP8024 TQFP BLDC Motor Driver Evaluation Board. Items discussed in this chapter
include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the MCP8024 TQFP BLDC Motor Driver Evaluation Board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the MCP8024
TQFP BLDC Motor Driver Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this user’s guide and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP8024 TQFP BLDC Motor Driver Evaluation Board.
• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the
MCP8024 TQFP BLDC Motor Driver Evaluation Board.
• Appendix C. “Software” – Provides information about the application firmware
and where the source code can be found.
2013 Microchip Technology Inc.
DS50002233A-page 7
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS50002233A-page 8
Examples
File>Save
Press ,
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
2013 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use MCP8024 TQFP BLDC Motor Driver Evaluation
Board. Other useful documents are listed below. The following Microchip documents
are available and recommended as supplemental reference resources.
• MCP8024 Data Sheet – “3-Phase Brushless DC (BLDC) Motor Gate Driver
with Power Module” (DS20005228)
This data sheet provides detailed information regarding the MCP8024 product
family.
• dsPIC33FJ32MC204 Data Sheet – “16-bit Digital Signal Controllers
(up to 32 KB Flash and 2 KB SRAM) with Motor Control and Advanced
Analog” (DS70283)
This data sheet provides detailed information regarding the dsPIC33FJ32MC204
product family.
• dsPIC33FJ32MC204 Plug-In-Module – “dsPIC33FJ32MC204 PIM Information
Sheet” (DS70316)
This data sheet provides detailed information regarding the dsPIC33FJ32MC204
PIM.
• AN1078 Application Note – “Sensorless Field Oriented Control Of a PMSM”
(DS01078).
• AN1160 Application Note – “Sensorless BLDC Control with Back-EMF
Filtering Using a Majority Function” (DS01160).
• AN901 Application Note – “Using the dsPIC30F for Sensorless BLDC Control” (DS00901).
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
2013 Microchip Technology Inc.
DS50002233A-page 9
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers, assemblers, linkers
and other language tools. These include all MPLAB C compilers; all MPLAB
assemblers (including MPASM™ assembler); all MPLAB linkers (including
MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object
librarian).
• Emulators – The latest information on Microchip in-circuit emulators.This
includes the MPLAB REAL ICE™ and MPLAB ICE 2000 in-circuit emulators.
• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3
debug express.
• MPLAB® IDE – The latest information on Microchip MPLAB IDE, the Windows®
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focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and
MPLAB SIM simulator, as well as general editing and debugging features.
• Programmers – The latest information on Microchip programmers. These include
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PICkit 2 and 3.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://www.microchip.com/support
DOCUMENT REVISION HISTORY
Revision A (December 2013)
• Initial Release of this Document.
DS50002233A-page 10
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The MCP8024 TQFP BLDC Motor Driver Evaluation Board is used to demonstrate the
drive capabilities of the MCP8024. The board uses the MCP8024 3-Phase Brushless
DC (BLDC) motor gate driver and dsPIC33FJ32MC204 Plug-In Module (PIM) to implement a 6-step trapezoidal BLDC motor controller.
The MCP8024 TQFP BLDC Motor Driver Evaluation Board is used to evaluate
Microchip’s MCP8024 in a BLDC motor application. As provided, the MCP8024 TQFP
BLDC Motor Driver Evaluation Board is ready to operate a BLDC motor using one
on-board push button to start and stop the motor, plus one on-board potentiometer to
set motor speed. The evaluation board can drive a BLDC motor with a supply voltage
of up to 28V and a motor current up to 15A. The MCP8024 TQFP BLDC Motor Driver
Evaluation Board provides a 6-step trapezoidal control algorithm along with a 750 mW
buck converter, 5V and 12V LDO, high-to-low level voltage translators, current sense
operational amplifiers and Hall-effect inputs. The evaluation board provides a status
indication for the power supplies and the six on-board Pulse-Width Modulation (PWM)
inputs.
This chapter covers the following topics.
• What is the MCP8024 TQFP BLDC Motor Driver Evaluation Board?
• What the MCP8024 TQFP BLDC Motor Driver Evaluation Board kit includes
7V to 28V
Power Supply
+
-
MCP8024 Evaluation Board
dsPIC33FJ32MC204 PIM
FIGURE 1-1:
Diagram.
2013 Microchip Technology Inc.
Phase B
Phase C
BLDC Motor
Phase A
MCP8024 TQFP BLDC Motor Driver Evaluation Board Block
DS50002233A-page 11
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
1.2
WHAT IS THE MCP8024 TQFP BLDC MOTOR DRIVER EVALUATION
BOARD?
The MCP8024 TQFP BLDC Motor Driver Evaluation Board is a complete stand-alone
motor controller for brushless DC motors (BLDC). The board is capable of driving a
three-phase brushless DC motor rated at up to 15A and 28V. The input voltage range
for the board is 7V to 28V. The on-board MCP8024 generates 5V and 12V using internal voltage regulators. The MCP8024 also contains an internal buck regulator which
generates the power for the attached dsPIC33FJ32MC204 host microcontroller.
An input terminal block is provided to apply the input voltage to the board. An output
header and plated Printed Circuit Board (PCB) through-hole pads are also provided as
a means to connect the external motor. Two programming headers are available for
updating the firmware contained in the dsPIC33FJ32MC204 using either a PICkit™ 3
programmer/debugger, MPLAB® REAL ICE™ in-circuit emulator or an MPLAB ICD 3
In-circuit debugger.
Two headers are also supplied on the board to allow users to create SPI and I2C™
communication connections.
1.3
WHAT THE MCP8024 TQFP BLDC MOTOR DRIVER EVALUATION BOARD
KIT INCLUDES
This MCP8024 TQFP BLDC Motor Driver Evaluation Board kit includes:
• MCP8024 TQFP BLDC Motor Driver Evaluation Board (ADM00557)
• dsPIC33FJ32MC204 Plug-In-Module (MA330017)
• Information Sheet
DS50002233A-page 12
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The MCP8024 TQFP BLDC Motor Driver Evaluation Board demonstrates Microchip’s
3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module (MCP8024),
used in a BLDC motor drive application. When used in conjunction with a
microcontroller, the MCP8024 will provide the necessary drive signals to drive a
3-Phase BLDC motor. The MCP8024 contains the high-side and low-side drivers for
external N-channel MOSFETs. The dsPIC33FJ32MC204 Motor Control processor is
used to supply the PWM inputs to the MCP8024, as well as handle the high-speed
Analog-to-Digital Conversion (ADC) required for 40 kHz PWM operation.
The MCP8024’s UART interface is used to configure the device and to send fault
information to the dsPIC® DSC controller. The evaluation board firmware, available on
the Microchip website, uses a 6-step trapezoidal drive control algorithm to demonstrate
the MCP8024 capabilities.
2.2
FEATURES
The MCP8024 TQFP BLDC Motor Driver Evaluation Board has the following features:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Input Operating Voltage Range: +7.0V to +28V
Maximum of 500 mA of gate drive current for external N-Channel MOSFETs
Drives up to a 15A BLDC motor
750 mW Buck Regulator with resistor-programmable output voltage
ON/OFF momentary contact switch
Reset momentary contact switch
Spare user-programmable momentary contact switch
PWM signal LED indicators
100-pin dsPIC DSC PIM header for use with MA330017 compatible PIMs
PICkit 3, MPLAB REAL ICE in-circuit emulator and MPLAB ICD 3 debugger
interfaces
Speed control potentiometer
Terminal block for 5V and 12V Hall-effect sensors
SPI and I2C headers for user communications
Programmable external MOSFET overcurrent protection
Programmable PWM dead-time protection
Programmable PWM blanking time for current switching spikes
Complete “C” source code (provided on the board web page)
2013 Microchip Technology Inc.
DS50002233A-page 13
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
2.3
GETTING STARTED
The MCP8024 TQFP BLDC Motor Driver Evaluation Board is fully assembled and
tested for driving a BLDC motor. This board requires the use of an external voltage
source capable of supplying 7V to 28V at the rated motor current. A BLDC motor is also
required to evaluate the motor driver.
FIGURE 2-1:
MCP8024 TQFP BLDC Motor Driver Evaluation Board Overlay.
2.3.1
Connections
2.3.1.1
JUMPER SETTINGS
The MCP8024 TQFP BLDC Motor Driver Evaluation Board has several
user-configurable jumpers. The jumpers are described in Table 2-1.
TABLE 2-1:
Jumper
Position
Description
JP1
ON
JP2
1-2
Disable Buck Regulator
2-3
Enable Buck Regulator
1-2
I2C™ Communications
2-3
SPI Communications
JP4
ON
Enable dsPIC® DSC to DE2 Communications
JP5
ON
Enable dsPIC DSC to DE2 Communications
JP6
1-2
Enable dsPIC DSC to PICkit™ Serial Communications
3-4
Enable DE2 to PICkit Serial Communications
JP3
DS50002233A-page 14
MCP8024 TQFP BLDC MOTOR DRIVER EVALUATION BOARD
JUMPERS
SPI Communications
2013 Microchip Technology Inc.
Installation and Operation
TABLE 2-1:
MCP8024 TQFP BLDC MOTOR DRIVER EVALUATION BOARD
JUMPERS (CONTINUED)
Jumper
JP9
Description
1-2
CE Pull Up
2-3
CE Pull Down
JP10
ON
Routes DE2 to dsPIC DSC RP20/CN25/RC4 pin
JP11
1-2
Enable DE2 to PICkit Serial Communications
3-4
Enable dsPIC DSC to PICkit Serial Communications
JP12 (MONITOR1)
JP13 (MONITOR2)
JP14 (MONITOR3)
1-2
Connect Phase Current to MONITORn
JP15
3-4
Connect Filtered Phase Voltage to MONITORn
5-6
Connect Hall Sensor to MONITORn
1-2
5V Hall Sensor Power Supply
2-3
12V Hall Sensor Power Supply
JP16
—
Sums Individual Phase Currents (soldered wire)
JP17
—
Select Individual Phase Currents (soldered wire)
JP18
1-2
Current Sense Offset = 0.992V
2-3
Current Sense Offset = 0.0V
2.3.1.1.1
TABLE 2-2:
Position
The jumpers and their use are described in Table 2-2.
JUMPER DESCRIPTION
Jumper
Position
Description
Enables PICkit™ Serial SPI (J4) communications to the dsPIC® DSC
JP1 (used with JP3)
ON
JP2
1-2
Disables the MCP8024 buck regulator by connecting the FB pin to +5V
2-3
Enables the MCP8024 buck regulator by connecting the FB pin to the buck output voltage divider
1-2
Enables PICkit Serial I2C™ (J4) communications to the dsPIC DSC
2-3
Enables PICkit Serial SPI (J4) communications to the dsPIC DSC
JP4
ON
Enables the dsPIC DSC to Transmit to the MCP8024 DE2 pin
JP5
ON
Enables the dsPIC DSC to Receive from the MCP8024 DE2 pin
JP6
1-2
Enables PICkit Serial UART (J1) Transmissions to the dsPIC DSC
3-4
Enables PICkit Serial UART (J1) Transmissions to the MCP8024 DE2 pin
JP3 (used with JP1)
JP7
Permanent jumper wire connecting Digital ground to Power ground
JP8
Permanent jumper wire connecting Analog ground to Power ground
JP9
1-2
Connects the MCP8024 CE pin to a pull-up resistor
2-3
Connects the MCP8024 CE pin to a pull-down resistor
JP10
ON
Connects the dsPIC DSC RP20/CN25/RC4 pin to the MCP8024 DE2 pin
JP11
1-2
Enables PICkit Serial UART (J1) Reception from the MCP8024 DE2 pin
3-4
Enables PICkit Serial UART (J1) Reception from the dsPIC DSC
JP12
1-2
Connects the Phase A amplified motor current to the dsPIC DSC Monitor 1
input
3-4
Connects the Phase A filtered motor current to the dsPIC DSC Monitor 1 input
5-6
Connects the Phase A Hall-effect sensor input to the dsPIC DSC Monitor 1
input
1-2
Connects the Phase B amplified motor current to the dsPIC DSC Monitor 2
input
3-4
Connects the Phase B filtered motor current to the dsPIC DSC Monitor 2 input
5-6
Connects the Phase B Hall-effect sensor input to the dsPIC DSC Monitor 2
input
JP13
2013 Microchip Technology Inc.
DS50002233A-page 15
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
TABLE 2-2:
JUMPER DESCRIPTION (CONTINUED)
Jumper
Position
JP14
JP15
Description
1-2
Connects the Phase C amplified motor current to the dsPIC DSC Monitor 3
input
3-4
Connects the Phase C filtered motor current to the dsPIC DSC Monitor 3 input
5-6
Connects the Phase C Hall-effect sensor input to the dsPIC DSC Monitor 3
input
1-2
Sets the Hall effect supply to +5V
2-3
Sets the Hall effect supply to +12V
JP16 (used with JP17)
Jumper wire connecting Phase B and Phase C sense resistors to Phase A
sense resistor for summing phase currents
JP17 (used with JP16)
Jumper wire connecting Phase B and Phase C sense resistors to ground for
using individual phase currents
JP18
1-2
Sets the current sense amplifier offset voltage to 0.992 volts
2-3
Sets the current sense amplifier offset voltage to 0.0 volts
The jumper settings for use with the sensorless trapezoidal drive firmware are
described in Table 2-3.
TABLE 2-3:
JUMPERS USED BY SENSORLESS TRAPEZOIDAL FIRMWARE
Jumper
Position
Description
JP2
2-3
Enable Buck Regulator
JP4
ON
Enable dsPIC® DSC to DE2 Communications
JP5
ON
Enable dsPIC DSC to DE2 Communications
JP6
OFF
Disable dsPIC DSC to PICkit™ Serial Communications
OFF
Disable DE2 to PICkit Serial Communications
JP9
2-3
CE Pull Down
JP10
OFF
Disconnect DE2 to dsPIC DSC RP20/CN25/RC4 pin
JP11
OFF
Disable DE2 to PICkit Serial Communications
OFF
Disable dsPIC DSC to PICkit Serial Communications
JP12 (MONITOR1)
JP13 (MONITOR2)
JP14 (MONITOR3)
3-4
Connect Filtered Phase Voltage to MONITORn
JP16
OFF
Deselect Summing Phase Currents
JP17
ON
Select Individual Phase Currents
JP18
1-2
Current Sense Offset by 0.992V
2.3.1.2
POWERING THE MCP8024 TQFP BLDC MOTOR DRIVER EVALUATION
BOARD (REFERENCE Figure 2-2)
1. Apply the input voltage to the input terminal block J5. The input voltage source
should be limited to the 0V to +28V range. For nominal operation, the input
voltage should be between +7.0V and +24V.
2. Connect the positive side of the input source (+) to pin 2 of J5. Connect the
negative or return side (-) of the input source to pin 1 of J5. Refer to Figure 2-2.
DS50002233A-page 16
2013 Microchip Technology Inc.
Installation and Operation
J5
Input Power
VDD
GND
M1
dsPIC®
DSC PIM
J6
Motor
Connections
J3
ICD 3
Header
PICkit™ Header J2 Speed
Adjust
R75
FIGURE 2-2:
RUN Switch RESET Switch
SW2
Connection and Operation Diagram.
2.3.1.3
CONNECTING A MOTOR MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD
Connect each phase winding of the three-phase BLDC motor to the appropriate
terminal of the motor terminal block (J6), terminals A,B,C. The neutral winding,
terminal N, is not necessary for the sensorless trapezoidal drive firmware provided for
the evaluation board.
2.3.2
Operating a Motor
1. Turn the Speed Adjust potentiometer (R75) fully counter-clockwise to obtain the
slowest speed setting. Now turn the Speed Adjust approximately ¼ turn clockwise to allow for 25% motor speed.
2. Turn on the power supply connected to the board.
3. Press and release the RUN switch (SW2) to start the motor.
4. Turn the Speed Adjust potentiometer clockwise to increase motor speed, and
counter-clockwise to decrease motor speed. The Speed Adjust changes the
PWM duty cycle of the PWM signals that are being sent to the MCP8024.
5. Press and release the RUN switch again to stop the motor.
2013 Microchip Technology Inc.
DS50002233A-page 17
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
2.3.3
Indicator LEDs
The MCP8024 TQFP BLDC Motor Driver Evaluation Board has ten LEDs to indicate
system status. Table 2-4 lists the LED indicators and their descriptions.
TABLE 2-4:
LED INDICATORS
PCB Location
Name
Description
D10
SPARE
D11
+12V
+12V LDO Voltage Operating
D12
+5V
+5V LDO Voltage Operating
D13
+Buck
D14
PWM3H
PWM Phase 3 high-side input to MCP8024
D15
PWM3L
PWM Phase 3 low-side input to MCP8024
D16
PWM2H
PWM Phase 2 high-side input to MCP8024
D17
PWM2L
PWM Phase 2 low-side input to MCP8024
D18
PWM1H
PWM Phase 1 high-side input to MCP8024
D19
PWM1L
PWM Phase 1 low-side input to MCP8024
2.3.4
Spare LED on RA4 port
Buck Output Voltage Operating
Test Points
There are several test points on the board to allow probing of voltages, currents and
signals.
TABLE 2-5:
Test Point
Name
TP1
VDD
TP2
PGND
Description
Power Supply (+)
Power Supply Ground (–)
TP3
DE2
TP4
PGND
Power Supply Ground (–)
TP5
PGND
Power Supply Ground (–)
TP6
PGND
Power Supply Ground (–)
MCP8024 DE2 Communications Signal
PHA_FIL
PHA_FIL
Filtered Phase A Signal
PHB_FIL
PHB_FIL
Filtered Phase B Signal
PHC_FIL
PHC_FIL
Filtered Phase C Signal
NEU_FIL
NEU_FIL
Filtered Neutral Signal
MON1
MON1
Monitor Signal 1: Connects to A/D Channel 3
MON2
MON2
Monitor Signal 2: Connects to A/D Channel 4
MON3
MON3
Monitor Signal 3: Connects to A/D Channel 5
MON4
MON4
Monitor Signal 4: Connects to A/D Channel 6
D14
PWM3H
PWM Phase C High-side Input to MCP8024
D15
PWM3L
PWM Phase C Low-side Input to MCP8024
D16
PWM2H
PWM Phase B High-side Input to MCP8024
D17
PWM2L
PWM Phase B Low-side Input to MCP8024
D18
PWM1H
PWM Phase A High-side Input to MCP8024
D19
PWM1L
PWM Phase A Low-side Input to MCP8024
PAD42
DS50002233A-page 18
TEST POINTS DESCRIPTION
POT
Speed Adjust Potentiometer. Clockwise increases voltage
(speed), counter-clockwise decreases voltage (speed).
2013 Microchip Technology Inc.
Installation and Operation
2.3.5
User Program Data Logging and Communications
Headers J1 and J4 are provided for user-programmed serial communications using the
PICkit Serial Analyzer. The user may add code to the firmware to allow communications between the PICkit Serial Analyzer and the dsPIC33FJ32MC204 processor. The
communications mode may be UART, SPI or I2C.
2.3.6
Re-Programming the dsPIC DSC PIM
The dsPIC33FJ32MC204 PIM included with the evaluation kit may be re-programmed
with the user’s desired firmware. The PIM may be programmed on the evaluation
board by using an external power source and either a PICkit 3 programmer, MPLAB
REAL ICE in-circuit emulator or MPLAB ICD 3.
1. Connect the power source to the board as explained in Section 2.3.1.2.
2. Connect a PICkit 3 to the J2 header or connect either an MPLAB ICD 3 or
MPLAB REAL ICE in-circuit emulator to the J3 (RJ12) jack.
3. Open up the MPLAB X Integrated Development Environment (IDE) and load the
MCP8024 TQFP BLDC Motor Driver Evaluation Board firmware project.
Note:
Note that the following project options may need to be changed for the
computer being used to build the firmware:
• Add Library libdsp-elf.a located in XC16 ???\src\Libdsp\lib
directory.
• Add XC16-as ASM Include Directory in XC16 ???\src\Libdsp\asm.
• Set Hardware tool to “ICD 3”, “MPLAB REAL ICE” or “PICkit3”.
4. Build the project.
5. Program the device.
6. Press the RESET switch on the board to reset the processor and allow the
processor to execute the new firmware program.
2.3.7
Configuring the MCP8024
The MCP8024 has configuration registers that may be used to modify operating parameters of the device. The parameters are modified by sending commands to the
MCP8024 using the DE2 communication bus. The DE2 communication bus is a
half-duplex, 9600 baud, 8-data bits, 1-stop bit, 1-start bit, no parity, serial communication link. The user may add code to the evaluation board firmware to communicate with
the registers. The evaluation board software contains a subroutine which initializes the
MCP8024 registers.
There are three configuration registers that may be written to. The registers are written
to by sending a SET_CFG_x command byte followed by the desired register value byte.
The configuration commands are listed in Table 2-6.
2013 Microchip Technology Inc.
DS50002233A-page 19
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
TABLE 2-6:
Command
SET_CFG_0
CONFIGURATION REGISTERS
Byte
Bit
Value
1
—
81H
2
7
0
Reserved
6
0
Disable disconnect of 30K level translator pull up when CE = 0 (default)
Set Configuration Register 0
1
Enable disconnect of 30K level translator pull up when CE = 0
5
0
Reserved
4
0
Reserved
3
0
Enable driver undervoltage lockout (default)
1
Disable driver undervoltage lockout
2
0
Enable external MOSFET short circuit detection (default)
1
Disable external MOSFET short circuit detection
1-0
00
Set external MOSFET overcurrent limit to 0.250V (default)
01
Set external MOSFET overcurrent limit to 0.500V
10
Set external MOSFET overcurrent limit to 0.750V
11
SET_CFG_1
Description
1
—
2
7-0
83H
Set external MOSFET overcurrent limit to 1.000V
Set Configuration Register 1
00H – FFH Select DAC current reference value
(4.503V - 0.991V)/255 = 13.77 mV/bit
00H = 0.991V
40H = 1.872V = 40H * 13.77 mV/Bit + 0.991V (default)
FFH = 4.503V = FFH * 13.77 mV/Bit + 0.991V
SET_CFG_2
1
—
87H
2
7-4
0000
3-2
—
Driver PWM dead time
00
2 µs (default)
01
1 µs
10
500 ns
11
250 ns
1-0
DS50002233A-page 20
Set Configuration Register 2
Reserved
—
Driver Blanking Time (for Ignoring commutation spikes)
00
4 µs (default)
01
2 µs
10
1 µs
11
500 ns
2013 Microchip Technology Inc.
Installation and Operation
2.3.8
MCP8024 Status
The host may also solicit MCP8024 status information by issuing a STATUS_0 or
STATUS_1 command. The MCP8024 may send an unsolicited STATUS_0 or
STATUS_1 command to the host in the event of a fault or warning. The status
registers are listed in Table 2-7.
TABLE 2-7:
STATUS REGISTERS
Command
Byte
STATUS_0
1
—
85H
Get Status Register 0 Command from Host to MCP8024
STATUS_1
1
—
86H
Get Status Register 1 Command from Host to MCP8024
STATUS_0
1
—
45H
Status Register 0 Response to Host from MCP8024
85H
Status Register 0 Command to Host from MCP8024 (unsolicited)
2
STATUS_1
1
2
Bit
7-0
—
7-0
2013 Microchip Technology Inc.
Value
00000000
Description
Normal Operation
00000001
Temperature Warning (TJ > +125°C (Default Warning Level))
00000010
Over Temperature (TJ > +160°C)
00000100
Input Undervoltage (VDD < 5.5V)
00001000
Reserved
00010000
Input Overvoltage (VDD > 32V)
00100000
Buck Regulator Overcurrent
01000000
Buck Regulator Output Undervoltage Warning
10000000
Buck Regulator Output Undervoltage (< 80%, brown-out error)
46H
Status Register 1 Response to Host from MCP8024
86H
Status Register 1 Command to Host from MCP8024 (unsolicited)
00000000
Normal Operation
00000001
5V LDO Overcurrent
00000010
12V LDO Overcurrent
00000100
External MOSFET Undervoltage Lockout (UVLO)
00001000
External MOSFET Overcurrent Detection
00010000
Brown-out Reset – Config Lost (Start-up default = 1)
00100000
Reserved
01000000
Reserved
10000000
Reserved
DS50002233A-page 21
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
NOTES:
DS50002233A-page 22
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the MCP8024 TQFP
BLDC Motor Driver Evaluation Board:
•
•
•
•
•
•
Board – Schematic
Board – Top Silk Layer
Board – Top Metal Layer
Board – Mid1 Metal Layer
Board – Mid2 Metal Layer
Board – Bottom Metal Layer
2013 Microchip Technology Inc.
DS50002233A-page 23
BOARD – SCHEMATIC
PGC
RX
GND
5
4
3
6
JP6
SER_RX
PGD
5
6
2
SER_TX
C1
1uF
10V
/MCLR_VPP
3
4
1
+3.3V
1
2
PAD1 PAD2
J1-4 J1-5
JP7
JP8
JP9
PAD3
DGND
JP10
+3.3V
ICD3 Debugger
+V
TX
AUX
DATA
GND
CLK
6
5
VDD
3
2
1
J3
/MCLR
VDD
GND
ICSP DAT
ICSP CLK
Jumper Position
Description
JP1
ON
SPI Communications
1-2
Disable Buck Regulator
JP2
2-3
Enable Buck Regulator
1-2
I2C Communications
JP3
2-3
SPI Communications
JP4
ON
Enable dsPIC/DE2 Communication
ON
JP5
Enable dsPIC/DE2 Communication
PICKit Serial (UART)
J1
4
/MCLR
PICKit Prog
J2
C2
1uF
10V
JP11
DGND
JP12
JP13
JP14
+3.3V
1
/CS
SPI_/SS
C3
1uF
10V
RP23
2
+V
JP15
JP16
3
GND
J4
4
SDI
SPI
JP1
DGND
I2C_SDA, SPI_SDI
SDO
5
I2C_CLK, SPI_CLK
6
SPI_SDO
Enable dsPIC/Serial PICkit Comms
Enable DE2/Serial PICkit Comms
1-2
Enable DE2/Serial PICkit Comms
Digital Ground Star Connection
Analog Ground Star Connection
CE Enabled
CE Disabled
Routes DE2 to dsPIC RP20/CN25/RC4
3-4
Enable dsPIC/Serial PICkit Comms
1-2
3-4
5-6
1-2
2-3
1-2
Connect Phase Current To MONITOR1
Connect Filtered Phase To MONITOR2
Connect Hall Sensor To MONITOR3
5V Hall Sensor Power Supply
12V Hall Sensor Power Supply
Current Sense Offset = 0.992V
2-3
Current Sense Offset = 0.0V
JP17
----
JP18
----
Selects Individual Phase Currents
Sums Phase Currents
PAD4
MCP8024 Buck
Faraday Shield Ground Plane
L1
Vbuck = 1.25 (RFB1 + RFB2)/RFB2
3.3 uH
744-042-003
D2
RP25
SPI
C6
10 uF
16V
SS24-TP
R3
4.99
JP3
1-2 = I2C
2-3 = SPI
PICKit Serial (SPI,I2C)
3.3V
AVDD
I2C
RP24
+3.3V
R1
1
D1
5V Transzorb
Buck Feedback (FB)
R2
18K
RFB1
C4
1800 pF
50V
RP22
1
SCK
1-2
3-4
--------------1-2
2-3
ON
C5
10 uF
16V
JP2
C7
10 uF
16V
1
AGND
5V_LDO
VDD
DGND
TP1
R4
11K
RFB2
PAD5
VDD
VDD
DGND
J5
2
+3.3V
C8
10 uF
16V
PWM1H2
1
RC5
RP23
RP22
12V_LDO
RA9
PWM1L2
DSPIC_RX
SW2
PAD6
JP5
PWM1L1
DSPIC_TX
SW1
JP4
SPARE_LED
DGND
R6
2K
PWM1H1
47K
R5
DE2
D4
D5
SS24-TP
+3.3V
C9
470 uF
50V
D6
SS24-TP
C11
1 uF
50V
C10
470 uF
50V
VDD
VDD Max = 32V
PGND
2
1
D3
SMCJ30A
PAD9
SS24-TP
PGND
76
35
FDD10AN06A0
FDD10AN06A0
18 AWG Wire
FDD10AN06A0
D22
SMAJ33CA
PHA
PGND
34
33
32
31
PAD22
PAD23
PHA_FIL PHB_FIL
R22
300
PHA_FIL
PHB_FIL
R26
30
R18
22K
R25
300
Q6G
Q6
29
10
28
R17
22K
R20
22K
27
FDD10AN06A0
FB
VDD
VDD
LX
10
PGND
R27
300
PHC_FIL
R30
300
26
NEU_FIL
25
R35
2.4K
PGND
LC
LA
LB
36
NEUT
R36
2.4K
R37 R38
2.4K 2.4K
PAD34
NEU_FIL
PAD35
PHC_FIL
24
23
22
PGND
PGND
21
19
PGND
ISENSE+
HC
PGND
MON3
ISENSE_CL
R42
2.49K
5
R19
22K
Q5
FDD10AN06A0
37
38
39
PWM1L2
PWM1H3
PWM1L3
40
41
CAP2
5VLDO
CAP1
DE2
PWM3L
PWM2L
HB
IOUT2
20
MONITOR_3
HA
ISENSE3+
18
+
PHB
13
3
47K
3
R39
2.49K
PHA
PH_C
R41
3.74K
PGND
R43
1K
PGND
ISENSE_B
C24
0.047uF
25V
ISENSE_C
PGND
R44
C25
0.047uF
25V
C26
0.047uF
25V
5V_LDO
C27
0.047uF
25V
PGND
+5V Hall Effect Supply
JP15
ISENSE_BL
+12V Hall Effect Supply
ISENSE_BL
Av=11
SPARE_LED
R62
47K
R75
10K
SW3
2
3
PWM1L1
PWM1H1
PWM1L2
PWM1L3
PWM1H2
+3.3V
PWM1H3
AGND
R76
3.74K
D10
D11
R79
1K
R77
2K
R80
1K
R81
1K
R82
1K
R83
1K
C40
1uF
10V
DGND
DGND
DGND
SW1
SW2
RESET
R86
10.7K
C42
0.1uF
10V
R88
100
D12
PGND
D13
D14
D15
D16
D17
D18
D19
Spare
+12V
+5V
GREEN GREEN GREEN
DGND
DGND
+BUCK
GREEN
PWM3H
GREEN
DGND
PWM3L
GREEN
DGND
PWM2H
GREEN
DGND
PWM2L
GREEN
DGND
PWM1H
GREEN
DGND
PWM1L
GREEN
U3
MCP6021
C43
0.1uF
10V
PGND
DGND
AGND
1
R85
1K
R84
1K
1
4
2
4
5V_LDO
R78
1K
TP5
TP6
JP16
DNP
AGND
JP17
PGND
R49
4.7K
5
PAD39
4
PAD40
HALL_B
C33
100pF
25V
R89
7.5K
AVDD
0.992V
HALL A
R57
ISENSE_CL
HALL_A
12V_LDO
R50
4.7K
R56
47K PAD38
HALL_C
C34
100pF
25V
HALL B
R58
3
47K
C35
100pF
25V
C32
1 uF
50V
HALL C
2
HALL +
1
HALL J7
GND
JP18
0.992V
4
C41
0.1uF
10V
AGND
2
4
2
R87
2K
C39
1uF
10V
R66
24.9K
C36
0.1uF
10V
C37
10 uF
16V
PAD42
POT
C38
1uF
10V
R63
1K
AVDD
VDD
SW2
AVDD
VIN+
SW1
R64
47K
R65
2.49K
VOFFSET
R48
4.7K
Isense C
R53
.01
5W
47K
TP4
R61
3.74K
IOUTA
12V_LDO
POT
1
3
R74
30K
PAD41
IOUT1
PGND
SW2
3
1
3
1
R70
100
Isense B
R55
.01
5W
ILIMIT
1526 Hz Filter
C31
3
VDD_DIV16
SW1
R69
47K
Isense A
R54
.01
5W
PGND
R60
3.74K
2
AVDD
/MCLR_VPP
+3.3V
+3.3V
+3.3V
R59
1K
0.022uF
25V
R68
47K
R46
1K
C30
100pF
VOFFSET
ISENSE_B
R67
47K
R45
3.74K
R51
47K
152.6 Hz Filter
C29
Av=11
0.022uF
25V
R47
3.74K
C28
100pF
VOFFSET
R52
1K
1
MONITOR_4
MON4
5
14
U1:4
+
Vss
12
VOUT
-
MCP6024
NEU_FIL
VOFFSET
VIN-
13
VDD
2013 Microchip Technology Inc.
47K
1
6
R32
4
12
47K
R40
VBC
PHC
ISENSE3-
11
Av=11
MCP8024
LV_OUT1
IOUT3
PAD33
IOUT2
IOUTB
HALL_C
MON3_SEL
IOUTC
PHC_FIL
IOUTC
1
U1:1
VBB
PGND
10
R34
3.74K
1526 Hz Filter C23
0.022uF
C22
25V
100pF
VBA
HV_IN1
7
8
9
R33
1K
R29
2.49K
-
MCP6024
1
HV_IN2
6
PGND
12VLDO
U2
LV_OUT2
5
LVOUT1
PGND
CE
4
+3.3V
PWM3H
PWM2H
50
49
48
47
46
45
R28
47K
PAD30
MON2
PWM1H
3
HVIN2
HVIN1
PGND
PH_B
2
PAD20
D21
SMAJ33CA
PHB
R21
PWM1L
2
PWM1H1
LVOUT2
ISENSE_C
2
Q4
10
42
48
NC
NC
NC
1
PWM1L1
MONITOR_4
44
RC3
MONITOR_3
43
42
MONITOR_1
DGND
MONITOR_2
41
40
39
38
37
36
35
33
34
POT
32
31
30
29
28
AVDD
R23
47K
3
1
PGND
43
51
IOUT1
5
D20
SMAJ33CA
PHC
R16
52
ISENSE1-
R31
2.49K
Q4G
FDD10AN06A0
54
ILIMIT
MONITOR_2
C21
1uF
10V
AGND
+
C20
10 uF
16V
53
ISENSE2+
5
JP14
2
5V_LDO
55
PWM1H2
RP23_RB7
RP21_RC5
RP22_RC6
NC
RA4
RA9
RB4
NC
NC
NC
NC
VCAP
NC
NC
NC
NC
NC
C19
1 uF
50V
56
NC
PH_A
PAD17
12V_LDO
58
57
ISENSE2-
7
U1:2
MCP6024
3
4
59
17
1
10V
1uF
C44
-
+3.3V
6
IOUTC
R24
2.49K
5
27
MON1
J6
MOTOR
PAD14
PAD16
Q5G
26
+
AGND
60
U1:3
10
PGND
JP8
V12
PAD15
61
NC
NC
AN6_(Jumper)
RP19_CN28_RC3
Q3G
DGND
62
18 AWG Wire
77
78
81
82
84
83
79
80
86
87
88
89
85
90
94
91
92
95
93
97
96
NC
NC
PWM1L1
PWM1H1
RA8
AN5
MONITOR_1
AN4
PGEC3
VDD
AGND
8
98
NC
AN0
Q3
63
16
6
NC
NC
Q2G
10
15
4
NC
AN1
25
10
R13
RA3
RA2
14
HALL_B
2
MON2_SEL
IOUTB
NC
-
MCP6024
3
JP13
PHB_FIL
NC
PGD
6
1
MON1_SEL
4
NC
NC
PGC
HALL_A
2
24
NC
RP9
AN7
AN3
4
11
9
JP12
IOUTA
PHA_FIL
IOUTA
NC
CN22_RB8
NC
22
23
IOUTB
NC
NC
21
NC
20
VDD
19
VSS
VDD_DIV16
AN2
18
DSPIC_TX
PAD19
R15
2.49K
NC
NC
NC
17
+3.3V
ILIMIT
AGND
VSS
DGND
Q2
PGND
65
64
OSCI/CN30/RA2
VDD
NC
16
AN8_RP18_RC2
C18
1uF
10V
DGND
Q1
Q1G
R11
66
NC
AVDD
AVDD
R14
47K
DSPIC_PIM_LNK
NC
JP7
R9
RP24
67
NC
OSCO/CN29/RA3
/MCLR
C15
1 uF
50V
10
RP25
68
10 uF
50V
C14
1 uF
50V
PGND
C16
10 uF
16V
DE2
DSPIC_RX
69
VSS
DSPIC33FJ32MC204_PIM
NC
15
70
C12
5V LDO
PAD10
DGND
71
NC
NC
12
72
C13
1 uF
50V
TP3
DE2 To RC4
JP10
73
SCL1_RP24
NC
11
14
C17
1uF
10V
RP7
SDA1_RP25
NC
10
13
/MCLR_VPP
NC
NC
AVSS
+3.3V
RA7
NC
9
R12
47K
NC
R8
47K
CE
JP9
74
45
8
4
RP20_CN25_RC4
NC
SER_RX
7
NC
NC
3
DSPIC_TX
2
+3.3V
SER_RX_SEL
1
6
NC
47
4
5
NC
PWM1H3
1
75
NC
NC
44
3
JP11
PWM1L2
NC
2
PGND
47K
46
1
RA10_(Jumper)
4
PWM1H3
TP2
R7
SER_TX
PWM1H2
3
R10
2K
2
PGED3
1
DSPIC_RX
PWM1L3
SER_TX_SEL
M1
99
100
PWM1L3
JP6
R71
90.9K
R72
90.9K
R73
90.9K
PGND
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
DS50002233A-page 24
A.2
Schematic and Layouts
A.3
BOARD – TOP SILK LAYER
2013 Microchip Technology Inc.
DS50002233A-page 25
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
A.4
BOARD – TOP METAL LAYER
DS50002233A-page 26
2013 Microchip Technology Inc.
Schematic and Layouts
A.5
BOARD – MID1 METAL LAYER
2013 Microchip Technology Inc.
DS50002233A-page 27
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
A.6
BOARD – MID2 METAL LAYER
DS50002233A-page 28
2013 Microchip Technology Inc.
Schematic and Layouts
A.7
BOARD – BOTTOM METAL LAYER
2013 Microchip Technology Inc.
DS50002233A-page 29
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
NOTES:
DS50002233A-page 30
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Appendix B. Bill of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Designator
Description
3M
Part Number
4
Bumpons
10
C1, C2, C3, C17, Cap Ceramic 1 µF 10V 10% X7R 0603
C18, C21, C38,
C39, C40, C44
1
C4
Cap Ceramic 1800 pF 50V 10% X7R 0805 AVX Corporation
08055C182KAT2A
7
C5, C6, C7, C8,
C16, C20, C37
Cap Ceramic 10 µF 16V 10% X7R 1206
TDK Corporation
C3216X7R1C106K160
AC
2
C9, C10
Cap Alum-Elect 470 µF 50V 20% Radial
12.5 mm Dia, 5 mm lead spacing
United Chemi-Con
EKZE500ELL471MK20
S
6
C11, C13, C14,
C15, C19, C32
Cap Ceramic 1 µF 50V 10% X7R 1210
Taiyo Yuden Co., Ltd. UMK325B7105KH-T
1
C12
Cap Ceramic 10 µF 50V 10% X5R 1210
Taiyo Yuden Co., Ltd. UMK325BJ106KM-T
6
C22, C28, C30,
C33, C34, C35
Cap Ceramic 100 pF 50V 10% X7R 0603
TDK Corporation
C1608X7R1H101K
Vishay
Intertechnology, Inc.
VJ0603Y101KXACW1BC
3
C23, C29, C31
Cap Ceramic 0.022 µF 25V 10% X7R 0603 TDK Corporation
C1608X7R1E223K
4
C24, C25, C26,
C27
Cap Ceramic 0.047µF 25V 10% X7R 0603 Yageo Corporation
CC0603KRX7R8BB473
4
C36, C41, C42,
C43
Cap Ceramic 0.1 µF 25V 10% X7R 0603
Yageo Corporation
CC0603KRX7R8BB104
1
D1
Transient Voltage Suppressor 400W 5%
5V SMA
Vishay
Intertechnology, Inc.
SMAJ5.0A-E3/61
4
D2, D4, D5, D6
Diode Schottky 40V 2A SMA
Micro Commercial
Components
Corporation/Diodes®
Incorporated
SS24-TP / B240A-13-F
1
D3
Transient Voltage Suppressor 1500W 30V
SMC
Vishay
Intertechnology, Inc.
SMCJ30A-E3/57T
10
D10, D11, D12,
D13, D14, D15,
D16, D17, D18,
D19
Light Emitting Diode Green, 2 x 1.2 MM,
570 NM, WTR CLR, SMD
Kingbright
APT2012CGCK
3
D20, D21, D22
Transient Voltage Suppressor 400W 33V
Bidirectional SMA
Vishay
Intertechnology, Inc.
SMAJ33CA-E3/5A
3
J1, J2, J4
Header 1 x 6, 0.1 Centers
Molex®
0022284360 (1 rows x
36 columns, cut as
needed)
1
J3
RJ12 6P6C Right Angle Jack
TE Connectivity, Ltd.
5555165-1
1
J5
Terminal Block 2 pin, 2.54mm
Phoenix Contact
GmbH & Co.
Phoenix Contact
1725656
Note 1:
BUMPON TALL TAPER SQ .50X.23 BK
Manufacturer
SJ-5518(BLACK)
Taiyo Yuden Co., Ltd. LMK107B7105KA-T
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
2013 Microchip Technology Inc.
DS50002233A-page 31
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
TABLE B-1:
Qty
BILL OF MATERIALS (BOM) (CONTINUED)
Designator
Description
Manufacturer
Part Number
1
J6
Terminal Block 4 pin, 2.54mm
Phoenix Contact
GmbH & Co.
Phoenix Contact
1725672
1
J7
Terminal Block 5 pin, 2.54mm
Phoenix Contact
GmbH & Co.
Phoenix Contact
1725686
JP**
CONN JUMPER SHORTING GOLD
FLASH
Sullins Connector
Solutions
SPC02SYAN
4
JP1, JP4, JP5,
JP10
Header 1 x 2, 0.1 Centers
Molex
0022284360
(1 rows x 36 columns,
cut as needed)
5
JP2, JP3, JP9,
JP15, JP18
Header 1 x 3, 0.1 Centers
Molex
0022284360
(1 rows x 36 columns,
cut as needed)
2
JP6, JP11
Header 2 x 2, 0.1 Centers
Molex
0702800448
(2 rows x 50 columns,
cut as needed)
3
JP7, JP8, JP17
Wire 18 AWG, As needed
—
18 AWG bare wire as
needed
3
JP12, JP13,
JP14
Header 2 x 3, 0.1 Centers
Molex
0702800448
(2 rows x 50 columns,
cut as needed)
1
L1
Inductor 3.3 µH
Wurth® Group
744-042-003
1
M1
dsPIC33F GP 44P QFN TO 100P PIM
dsPIC33FJ32MC204
Microchip
Technology Inc.
MA330017
4
M1 Headers
Fine Pitch Header, 1 row 25 columns
Samtec, Inc.
MTMS-125-01-G-S-230
6
Q1, Q2, Q3, Q4, MOSFET N-CH 60V 50A D-PAK
Q5, Q6
Fairchild
Semiconductor®
FDD10AN06A0
1
PCB
Printed Circuit Board – MCP8024 TQFP
BLDC Motor Driver Evaluation Board
Microchip
Technology Inc.
104-10239
1
R1
RES 1.00 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-071RL
1
R2
RES 18.0 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0718KL
14
1
R3
RES 4.99 1/8W 1% 0805 SMD
Yageo Corporation
RC0805FR-074R99L
1
R4
RES 11.0 k 1/10W 1% 0603 SMD
Yageo Corporation/
Panasonic® - ECG
RC0603FR-0711KL/
ERJ-3EKF1102V
19
R5, R7, R8, R12, RES 47.0 k 1/10W 1% 0603 SMD
R14, R23, R28,
R32, R40, R44,
R51, R56, R57,
R58, R62, R64,
R67, R68, R69
Yageo Corporation
RC0603FR-0747KL
3
R6, R10, R87
RES 2.00 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-072KL
6
R9, R11, R13,
R16, R21, R26
RES 10.0 1/8W 1% 0805 SMD
Yageo Corporation
RC0805FR-0710RL
7
R15, R24, R29,
R31, R39, R42,
R65
RES 2.49 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-072K49L
4
R17, R18, R19,
R20
RES 22.0 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0722KL
4
R22, R25, R27,
R30
RES 300 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-07300RL
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
DS50002233A-page 32
2013 Microchip Technology Inc.
Bill of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM) (CONTINUED)
Designator
Description
Manufacturer
Part Number
14
R33, R43, R46,
R52, R59, R63,
R78, R79, R80,
R81, R82, R83,
R84, R85
RES 1.00 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-071KL
7
R34, R41, R45,
R47, R60, R61,
R76
RES 3.74 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-073K74L
4
R35, R36, R37,
R38
RES 2.40 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-072K4L
3
R48, R49, R50
RES 4.70 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-074K7L
3
R53, R54, R55
RES .010 5W 1% FLAT SMD
TT Electronics
Plc./IRC
OARSXPR010FLF
1
R66
RES 24.9 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0724K9L
2
R70, R88
RES 100 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-07100RL
3
R71, R72, R73
RES 90.9 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0790K9L
1
R74
RES 30.0 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0730KL
1
R75
Potentiometer 10 k 1/8W CARB VERTICAL
CTS® Corporation
296UD103B1N
1
R77
RES 2.00 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-072KL
1
R86
RES 10.7 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-0710K7L
1
R89
RES 7.50 k 1/10W 1% 0603 SMD
Yageo Corporation
RC0603FR-077K5L
3
SW1, SW2,
SW3
SWITCH TACTILE SPST-NO 0.05A 12V
E-Switch®, Inc.
TL330INF260QG
6
TP1, TP2, TP3,
TP4, TP5, TP6
SMT Test Point
Keystone
Electronics Corp.
5016
1
U1
MCP6024 Quad Op Amp – Plastic TSSOP, Microchip
14-lead
Technology Inc.
MCP6024-E/ST
1
U2
3-Phase Brushless DC (BLDC) Motor Gate Microchip
Driver with Power Module - Plastic Thin
Technology Inc.
Quad Flatpack with Exposed Pad - 7x7 mm
body, 48-lead, Thermally Enhanced (EP)
MCP8024-H/PT
1
U3
MCP6021 Single Op Amp - Plastic Small
Outline Transistor (SOT-23), 5-lead
MCP6021T-E/OT
Note 1:
Microchip
Technology Inc.
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
2013 Microchip Technology Inc.
DS50002233A-page 33
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
NOTES:
DS50002233A-page 34
2013 Microchip Technology Inc.
MCP8024 TQFP BLDC MOTOR DRIVER
EVALUATION BOARD USER’S GUIDE
Appendix C. Software
C.1
SELECTED SOFTWARE CONSTANTS AND DEFINITIONS
1. FOSC
Microprocessor Oscillator Frequency in Hz. based upon PLL scaling.
2. FPWM = 40000
Selects dsPIC DSC PWM period in Hz.
3. LOOPMODE = CLOSEDLOOPMODE
Sets motor controller to use closed loop control. The PID control functions will be
used to control motor speed.
4. LOOPMODE = OPENLOOPMODE
Sets motor controller to use open loop control. The speed adjust input relative
position will be used to set the motor speed.
5. PWM_MODE_SELECT = PWM_MODE_SELECT_INDEPENDENT
Sets the low-side external MOSFET driver to operate independently of the
high-side driver.
6. PWM_MODE_SELECT = PWM_MODE_SELECT_COMPLEMENTARY
Sets the low-side external MOSFET driver to operate in complement of the
high-side driver.
7. PWM_COUNTS_PER_PERIOD = (FCY/FPWM – 1)
Defines the number of timer counts per PWM period.
8. RAMP_UP_PERIODS
Defines the number of PWM periods to use to ramp the motor speed during
startup.
9. MAX_DUTY_CYCLE
Defines the maximum desired PWM duty cycle.
10. MIN_DUTY_CYCLE
Defines the minimum desired PWM duty cycle.
11. MIN_SAMPLE_TIME
Defines the minimum allowable PWM duty cycle based upon A/D sample time.
12. STARTUP_DUTY_CYCLE
Defines the minimum desired PWM duty cycle during motor startup.
13. PHASE_ADVANCE_DEGREES
Defines the number of electrical degrees (in timer tics) that will be subtracted
from the calculated commutation timer reload count. This allows for compensating for any latencies in the system.
14. ZC_BLANKING_COUNT
Defines the number of PWM periods that the ADC readings are ignored. This
allows filtering of signals after commutation when high voltage spikes may be
present.
15. unsigned int ReferenceSpeed
Contains the motor target speed based upon the SPEED potentiometer input.
2013 Microchip Technology Inc.
DS50002233A-page 35
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
16. int DesiredSpeed
Contains the desired motor target speed based upon the SPEED potentiometer
input.
17. int CurrentSpeed
Contains the current motor speed.
18. unsigned int SpeedControl_P
Proportional term of the closed loop PID control function. Sets the motor gain
coefficient for the current speed error.
19. unsigned int SpeedControl_I
Integral term of the closed loop PID control function. Sets the motor gain coefficient for previous speed changes.
20. unsigned int SpeedControl_D
Derivative term of the closed loop PID control function. Sets the motor gain coefficient for predicted errors in the motor control loop.
21. PWM_STATE[]
Array containing the high-side and low-side gate driver output states for a given
step of the six-step commutation algorithm.
22. BOOTSTRAP_CHARGE_STATE
High-side and low-side gate driver output states for charging the bootstrap
capacitors prior to motor startup.
23. MOTOR_SHUTDOWN_STATE
High-side and low-side gate driver output states that may be used when shutting
down the motor.
24. ADC_MASK[]
A/D Back EMF mask used for majority detection.
25. ADC_XOR[]
A/D Back EMF mask used for majority detection.
26. ADC_BEMF_FILTER[]
A/D Back EMF filter table used to determine next commutation time.
C.2
DSPIC33FJ32MC204 PIM PORT USAGE
Port
Name
Description
/* Port A */
PORTA.2
DEBUG_PORT1
General purpose debug port
PORTA.3
DEBUG_PORT2
General purpose debug port
PORTA.4
SPARE_LED
Spare LED port
PORTA.7
MCP8024_CE
1 = Enables MCP8024 output
0 = Disables MCP8024 output
PORTA.8
SW1
Spare push button input
/* Port B */
PORTB.4
SW2
‘On/Off’ switch input
PORTB.8
ILIMIT_OUT
MCP8024 ILIMIT_OUT signal:
1 = OK
0 = Fault/Current Limit
DEBUG_PORT3
General purpose debug port
/* Port C */
PORTC.5
DS50002233A-page 36
2013 Microchip Technology Inc.
Software
C.3
MPLAB X IDE COMPILER STARTUP
1. Start the MPLAB X IDE compiler (not supplied, available on Microchip web
page).
2. From the toolbar, select File > Open Project.
3. Browse to the evaluation board source code path.
4. Select the existing project file named MCP8024_ADM00557_EVAL.
5. In the Projects window, right mouse-click on MCP8024_ADM00557_EVAL and
select Properties. The page contains the project properties. Processor, Compiler,
Hardware and Config settings may be changed here.
Note:
The user may need to modify the paths to the source files and linker files
based upon their locations on the host computer. Make sure to verify that
the Libraries contains the correct path to libdsp-elf.a.
6. Right click on the MCP8024_ADM00557_EVAL again and select the “Make and
Program Device” option. This will compile the firmware and download to the
programming hardware.
7. The compiler results will be displayed in the Output window frame. Verify
success.
C.4
MPLAB X IDE AND PICkit 3 PROGRAMMER EXERCISE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Start the MPLAB X (not supplied, available on Microchip web page).
From the toolbar, select File > Open Project.
Browse to the evaluation board source code path.
Select the existing workspace directory named MCP8024_ADM00557_EVAL or
create a new one.
Connect the PICkit 3 programmer to header J2 on the evaluation board. Align
Pin 1 of the header with the Pin 1 mark on the programmer.
Set the bench power supply voltage control to the minimum voltage output.
Turn on the power supply and set the output voltage to 14V. Turn off the power
supply.
Connect the bench power supply to the evaluation board. Connect +V(14V) to
J5-2 and –V (Ground) to J5-1.
Turn on the power supply.
Right click on MCP8024_ADM00557_EVAL in the Projects window and select the
“Make and Program Device” option. This will compile the firmware and program
the dsPIC33FJ32MC204 PIM module.
The compiler results will be displayed in the Output window frame. Verify
success.
Connect a brushless DC (BLDC) motor to connector J6. Connect the motor
phase wires to the PH_A(J6-4), PH_B (J6-3) and PH_C (J6-2) terminals. The
NEUT terminal (J6-1) is not used with the demonstration firmware.
Momentarily press the RESET switch on the evaluation board. This step is
required to reset the dsPIC DSC device after programming.
Turn the SPEED adjustment fully counter-clockwise. This sets the motor to the
slowest speed.
Momentarily press the SW2 switch to start the motor.
Momentarily press the SW2 switch again to stop the motor.
Momentarily press the SW2 switch again to start the motor.
Turn the SPEED adjustment clockwise. The motor speed should increase.
2013 Microchip Technology Inc.
DS50002233A-page 37
MCP8024 TQFP BLDC Motor Driver Evaluation Board User’s Guide
19. You may probe the different test points on the board to see the various signals
being generated. The Q1G through Q6G test points will show the external MOSFET gate drive signals. The D14 through D19 LED’s show the state of the PWM
inputs to the MCP8024. The MON1 through MON4 test points show the output
of the jumper-selected signals. PHA_FIL, PHB_FIL and PHC_FIL are the filtered
back EMF voltages from the motor. They are used to determine the commutation
time in the demonstration firmware.
20. Stop the motor by pressing SW2 again.
21. Change the motor control from Closed Loop to Open Loop. This is done by
editing the MCP8024_ADM00557_EVAL.C file.
22. Click on Source Files in the Projects window and then double click on the
MCP8024_ADM00557_EVAL.C entry.
23. Search for the pre-processor definition LOOPMODE.
24. Change the LOOPMODE definition from CLOSEDLOOPMODE to
OPENLOOPMODE.
25. Right click on MCP8024_ADM00557_EVAL in the Projects window and select
“Make and Program Device”. This will compile the firmware and program the
dsPIC33FJ32MC204 PIM module.
26. The compiler results will be displayed in the Output window frame. Verify
success.
27. Momentarily press the RESET switch on the evaluation board. This step is
required to reset the dsPIC DSC device after programming.
28. Turn the SPEED adjustment fully counter-clockwise. This sets the motor to the
slowest speed.
29. Momentarily press the SW2 switch again to start the motor.
30. Turn the SPEED adjustment clockwise. The motor speed should increase.
31. In OPENLOOPMODE, the motor speed is forced based upon the position of the
SPEED adjust potentiometer. If the SPEED adjust is set to 60%, the firmware will
set the PWM duty cycle to 60%. While this allows for simple control of the motor,
it is not efficient. If the motor is externally loaded, the motor may not be able to
maintain the manually set commutation time which will result in a motor stall. The
motor runs more efficiently when the motor is allowed to commutate based upon
rotor location and not by an external reference. In CLOSEDLOOPMODE, the
motor will commutate at the proper time based upon the Back EMF information.
If the motor is externally loaded, the motor will automatically adjust for the load
in order to maintain the correct commutation time.
32. Momentarily press the SW2 switch again to stop the motor.
DS50002233A-page 38
2013 Microchip Technology Inc.
Software
NOTES:
2013 Microchip Technology Inc.
DS50002233A-page 39
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DS50002233A-page 40
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China - Hangzhou
Tel: 86-571-2819-3187
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China - Hong Kong SAR
Tel: 852-2943-5100
Fax: 852-2401-3431
China - Nanjing
Tel: 86-25-8473-2460
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China - Qingdao
Tel: 86-532-8502-7355
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China - Shanghai
Tel: 86-21-5407-5533
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Tel: 86-755-8864-2200
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Tel: 86-27-5980-5300
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China - Xian
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India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
India - Pune
Tel: 91-20-3019-1500
Japan - Osaka
Tel: 81-6-6152-7160
Fax: 81-6-6152-9310
Japan - Tokyo
Tel: 81-3-6880- 3770
Fax: 81-3-6880-3771
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Germany - Dusseldorf
Tel: 49-2129-3766400
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Germany - Pforzheim
Tel: 49-7231-424750
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Italy - Venice
Tel: 39-049-7625286
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
Poland - Warsaw
Tel: 48-22-3325737
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
10/28/13
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