User manual

F1 LV EVALUATION PLATFORM
MOTOR CONTROL ADD-ONS
 2012 Microchip Technology Inc. DS41629A-page 41
Chapter 5. The Unipolar Stepper Add-on Board
5.1 GETTING STARTED
5.1.1 Overview
The unipolar stepper add-on (DM164130-7) allows you to drive common two-phase
unipolar stepper motors used in consumer electronics, ranging from CNCs, printers,
optical disc drives and small load positioning systems. The add-on is shipped together
with the Leadshine 42HS03 unipolar stepper motor pre-wired to plug directly into
add-on connector J3. Alternatively, any other 5-12V unipolar stepper motor can be
used by hooking it up through the J3 connector.
5.1.2 Features
The key features of this board include the following:
Connectors:
• Male 20-pin connector (J1) to match the F1 LV Evaluation Platform
• Generic 8-pin unipolar stepper motor connector(J3)
• 5-12V power supply input connector (J2)
Typical Unipolar Stepper drive:
• Four N-type MOSFETs, one for each motor winding end
• One sensing resistor for current measurement (R3).
Protection:
• 2x5A power fuses (F1, F2)
Power Supply:
• 3.3V voltage regulator (U1)
Parameter Storage:
• 1k x 8 UNI/O
®
Serial EEPROM (U2)
5.1.3 What’s Included
The unipolar stepper add-on with part number DM164130-7 contains:
• Unipolar Stepper Add-on Board designed for the F1 Evaluation Platform
• Leadshine motor (P/N: 42HS03)