ADM00308 Microchip Technology, ADM00308 Datasheet - Page 13

• Manufacturer Part Number: ADM00308
• Description: Power Management IC Development Tools MTS2916A Stepper Driver Eval Board
• Manufacturer: Microchip Technology
• Type: Motor / Motion Controllers & Driversr

Specifications of ADM00308

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: MTS2916A
• Input Voltage: 7 VDC to 12 VDC

2.4
 2012 Microchip Technology Inc.
GETTING STARTED
The MTS2916A Dual Full-Bridge Stepper Motor Driver Evaluation Board is fully
assembled and tested driving a dual coil bipolar stepper motor.
2.4.1
Follow these steps to power-up the board:
1. With the supply turned OFF, connect the power to the logic portion of the
2. If the user’s stepper motor requires a voltage that is compatible with the logic
3. Connect the bipolar stepper windings to J2 per the schematic diagram.
4. Turn ON the power supplies. Power sequencing is not required due to the under-
5. Toggle the Mode switch to cycle through the five modes, as indicated by the
6. Press the Run switch once to tell the PIC16F883 to send drive information to the
7. The Hold switch tells the PIC16F883 to command the MTS2916A to hold the
8. The Direction switch tells the PIC16F883 to command the MTS2916A to change
9. The Speed Adjust Potentiometer (R4) varies an analog voltage that is read by
Logic inputs I0 and I1control load current levels are shown in Table 2-1:
TABLE 2-1:
evaluation board at J1 with the specified voltage (7 V
portion of the evaluation board will typically draw less than 50 mA.
supply voltage and the user’s source can handle driving the stepper motor
windings, install JP2. DO NOT connect power at J4. If powering up the stepper
from an additional supply, DO NOT install JP2 and connect the stepper motor
supply to J4. J1 power will still be required for the logic supply.
voltage lockout circuitry.
binary LED count.
MTS2916A with minimal (1V) V
approximately 1V up to 5V maximum. This increases the current regulation
threshold.
motor position.
the direction of the motor.
the PIC16F883 Analog-to-Digital Converter, and varies the speed accordingly.
I0
0
1
0
1
Powering the MTS2916A Dual Full-Bridge Stepper Motor Driver
Evaluation Board
CURRENT LEVEL CONTROL
I1
0
0
1
1
Comparator Trip Voltage
V
V
V
TRIP
TRIP
TRIP
REF
Installation and Operation
=1/10 x V
=1/15 x V
=1/30 x V
. Subsequent Run presses increase V
x
REF
REF
REF
DC
2/3 x I
1/3 x I
to 12 V
I
MAX
Output Current
0 (no current)
MAX
MAX
=V
DC
=V
=V
REF
DS52058A-page 13
). The logic
REF
REF
/10 x R
/15 x R
/30 x R
REF
S
by
S
S