ANALOG ICs
33395 EVALUATION
MOTOR BOARD
DESIGNER REFERENCE
MANUAL
Rev. 2
05/2003
Communicate
Control
Protect
EMBEDDED MOTION CONTROL
MC33395RM
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
List of Sections 1
33395 Evaluation Motor Board
List of Sections
Section 1. Introduction and Setup .................................... 9
Section 2. Operational Description ................................. 15
Section 3. Pin Descriptions..............................................17
Section 4. Schematics and Parts List ............................. 25
Section 5. Design Considerations ..................................37
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
2 List of Sections
List of Sections
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
Table of Contents 3
33395 Evaluation Motor Board
Table of Contents
Section 1. Introduction and Setup
1.1 Contents .....................................................................................9
1.2 SMOS EVM Motor Board Introduction........................................ 9
1.3 About This Manual...................................................................... 9
1.4 Warnings ..................................................................................12
1.5 Setup Guide.............................................................................. 13
Section 2. Operational Description
2.1 Contents ...................................................................................15
2.2 Introduction...............................................................................15
2.3 Electrical Characteristics ..........................................................16
Section 3. Pin Descriptions
3.1 Contents ...................................................................................17
3.2 Introduction...............................................................................17
3.3 Signal Descriptions...................................................................19
3.3.1 Power Connectors J3 and JP4............................................ 19
3.3.2 40-Pin Ribbon Connector J1 ............................................... 19
3.3.3 Output Connectors: J2, J4, FASTONS (J5, J7, J8)............. 22
3.3.4 Jumpers and Switch/Push Button: M0, M1, PWM, SW1.....22
3.3.5 Test Points ..........................................................................24
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
4 Table of Contents
Table of Contents
Section 4. Schematics and Parts List
4.1 Contents ...................................................................................25
4.2 Overview................................................................................... 25
4.3 Schematics ...............................................................................25
4.4 Parts List................................................................................... 32
Section 5. Design Considerations
5.1 Contents ...................................................................................37
5.2 Overview................................................................................... 37
5.3 3-Phase H-Bridge .....................................................................37
5.4 Bus Voltage and Current Feedback Signals.............................38
5.5 Back-EMF Signals ....................................................................40
5.6 Brake Control............................................................................41
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
List of Figures 5
33395 Evaluation Motor Board
List of Figures
Figure Title Page
1-1 System Configurations..............................................................10
1-2 SMOS EVM Motor Board ver. 140A01 ..................................... 11
1-3 SMOS EVM Motor Board Setup ............................................... 14
3-1 40-Pin Input Connector J1 ........................................................ 18
4-1 SMOS EVM Motor Board ver. 140A01 Overview ....................26
4-1a SMOS EVM Motor Board ver. 140A02 Overview ....................27
4-2 3-Phase H-Bridge with Gate Driver ..........................................28
4-3 Current Feedback Circuits ........................................................29
4-4 Back-EMF Signals .................................................................... 30
4-5 Brake Control............................................................................31
4-6 Brushless DC Motor Connections - Schematic View................31
5-1 Phase Current and DC Bus Voltage Sensing ...........................39
5-2 Reconstructed Bus Current ......................................................40
5-3 Phase C Back-EMF Feedback ................................................. 40
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
6 List of Figures
List of Figures
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
List of Tables 7
33395 Evaluation Motor Board
List of Tables
Table Title Page
2-1 Electrical Characteristics ..........................................................16
3-1 Connector J1 Signal Descriptions ............................................19
3-2 Connectors J2 and J4 Signal Descriptions ............................... 22
3-3 Driver Jumper Groups for Operating Mode .............................. 22
3-4 Gate Driver PWM Signal Selection ...........................................23
3-5 Test Points ...............................................................................24
4-1 Parts List...................................................................................32
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
8 List of Tables
List of Tables
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
Introduction and Setup 9
33395 Evaluation Motor Board
Section 1. Introduction and Setup
1.1 Contents
1.2 SMOS EVM Motor Board Introduction........................................9
1.3 About This Manual......................................................................9
1.4 Warnings ..................................................................................12
1.5 Setup Guide..............................................................................13
1.2 SMOS EVM Motor Board Introduction
Freescale SMARTMOSTM 33395 evaluation motor board
(SMOS EVM motor board) is a 12-volt, 8-amp power stage that is an
integral part of Freescale embedded motion control series of
development tools. It is also supplied as a kit. In combination with one of
the embedded motion-control series control or evaluation boards, it
provides a ready-made development platform for brushless dc motors.
The motor can be controlled using Hall sensors, an optical encoder or
sensorless techniques. An illustration of system configurations is shown
in Figure 1-1. Figure 1-2 depicts the board layout.
1.3 About This Manual
Key items can be found in the following locations in this manual:
• Setup instructions are found in chapter 1.5.
• Schematics are found in chapter 4.3.
• Pin assignments are shown in Figure 3-1, and a pin-by-pin
description is contained in chapter 3.3.
• For those interested in the reference design aspects of the board’s
circuitry, a description is provided in Section 5.
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
10 Introduction and Setup
Introduction and Setup
Figure 1-1 System Configurations
HC08
CONTROLLER
BOARD
SMOS EVM
MOTOR BOARD
MOTOR
WORKSTATION
MMDS08
DSP
EVM
BOARD
SMOS EVM
MOTOR BOARD
MOTOR
WORKSTATION
b) 56800(E) DSPa) MC68HC(9)08MR MICROCONTROLLER
OPTIONAL FEEDBACKOPTIONAL FEEDBACK
Introduction and Setup
About This Manual
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
Introduction and Setup 11
Figure 1-2 SMOS EVM Motor Board ver. 140A01
MOTOR CONNECTORS
POWER SUPPLY CONNECTORS
TRIMMER
JUMPERS AND SWITCH
UNI-3
CONNECTOR
DRM33395 Designer Reference Manual 33395 Evaluation Motor Board
12 Introduction and Setup
Introduction and Setup
1.4 Warnings
The SMOS EVM motor board kit includes a rotating machine and power
transistors. Both can reach temperatures hot enough to cause burns! To
facilitate safe operation, 12-volt input power should come from a dc
laboratory power supply that is current limited to no more than 10 amps.
The user should be aware that:
• Before moving scope probes, making connections, etc., it is
generally advisable to power down the 12-volt supply.
• Standalone operation of the board should be allowed only with use
of an insulative pad or standoffs as shown in Figure 1-3.
• Wearing safety glasses, avoiding neckties and jewelry, using
shields, and operation by personnel trained in power electronics
lab techniques are also advisable.
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