DRM33395 Datasheet, PDF (17/44 Pages) Motorola, Inc – ANALOG ICs 33395 EVALUATION MOTOR BOARD DESIGNER REFERENCE MANUALv

Freescale Semiconductor, Inc.
33395 Evaluation Motor Board
Section 2. Operational Description
2.1 Contents
2.2 Introduction ...............................................................................15
2.3 Electrical Characteristics ..........................................................16
2.2 Introduction
Motorola’s embedded motion control series SMOS EVM motor board is
a 12-volt, 8-amp, surface-mount power stage with an analog SMOS
driver. In combination with one of the embedded motion control series
control boards, it provides a development platform that allows algorithms
to be written and tested without the need to design and build a power
stage. It supports algorithms that use Hall sensors, encoder feedback,
and Back-EMF (electromotive force) signals for sensorless control.
The SMOS EVM motor board has an over-current protection that is
independent of the control board, yet some care in its setup and use is
required for board or motor protection. Current-measuring circuitry is set
up for 8 amps full scale, according to trimmer position. A 25°C ambient
temperature operation with output current up to 10 amps of continuous
RMS value is within the board’s thermal limits. Note that there is no
thermal protection provided on the board.
Input connections are made via a 40-pin ribbon cable connector J1. Pin
assignments for the input connector are shown in Figure 3-1. Power
connections to the motor are made on one of the output connectors J2
or J4 or FASTON type (J5 J7 J8). Phase A (J8), phase B (J7), and phase
C (J5) are labeled on the board, the phase pin order for all three
connector types is identical. Power requirements are met by a single
external 12-Vdc power supply. Two connectors, labeled J3 and JP4, are
33395 Evaluation Motor Board
DRM33395 Designer Reference Manual
MOTOROLA
Operational Description
15
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