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dsPICDEM? MCSM Development Board User’s Guide
The connector is configured in such a way so that all eight motor wires can be
connected in all possible configurations. Considering an eight-wire motor in a bipolar
configuration (series- or half-winding), two wires will be left floating. The NC pins are
available to accommodate the two floating wires.
The DC bus connection is placed between wires of two different phases to
accommodate the center tap of a winding in unipolar configurations. Refer to Table 3
for details on how to connect the motor wires to J8 for all possible configurations.
3.3.7
Test Points
Table 3-6 lists the test points that can be used to check various signals.
TABLE 3-6:
TEST POINTS
DS70610A-page 26
Test Points
POT
15V
3.3V
AV DD
AV SS
IMOTOR1
IMOTOR2
V REF
DC_REF
IREF
PWM1H1
PWM1L1
PWM1H2
PWM1L2
PWM1H3
PWM1L3
PWM2H1
PWM2L1
Description
POT signal
15V MOSFET driver supply
3.3V digital supply
Analog supply (3.3V)
Analog ground
Motor current phase 1
Motor current phase 2
Zero current reference voltage
DC_BUS voltage input to ADC
Reference current for Fault detection
PWM output for wire 1 top switch
PWM output for wire 1 bottom switch
PWM output for wire 2 bottom switch
PWM output for wire 2 top switch
PWM output for wire 3 top switch
PWM output for wire 3 bottom switch
PWM output for wire 4 bottom switch
PWM output for wire 4 top switch
? 2009 Microchip Technology Inc.
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