User manual

dsPICDEM™ MCSM
DEVELOPMENT BOARD
USER’S GUIDE
© 2009 Microchip Technology Inc. DS70610A-page 17
Chapter 3. Hardware
This chapter describes the hardware used in the dsPICDEM MCSM Development
Board. Topics covered include:
• Hardware Architecture
• PIM Configuration
• Board Connectors
• User Interface Hardware
3.1 HARDWARE ARCHITECTURE
The dsPIC DSC devices feature an 8-channel, high-speed PWM with Complementary
mode output, a programmable ADC trigger on the PWM reload cycle, digital dead time
control, internal shoot-through protection and hardware fault shutdown.
These features make the dsPIC DSC an ideal solution for high-performance stepper
motor control applications where full control of the full-bridge inverter is required.
Figure 3-1 provides a simplified block diagram of the development board hardware.
FIGURE 3-1: dsPICDEM MCSM DEVELOPMENT BOARD BLOCK DIAGRAM
dsPIC33FJXXXMCXXX
PIM
Drivers
IMOTOR1
FAULT
IMOTOR2
Safe Current
Level
Amplifier
Amplifier
Comparator
PWM1H1
DC_BUS
24 VDC
BP1
BP2
J5
J7
J6
15V3.3V
Regulator
Regulator
PWM1L1
PWM1H2
PWM1L2
PWM1H3
PWM1L3
PWM2H1
PWM2L1
M1
M2
M3
M4
J8
M
UART
to
USB
USB
J4
ICD2
J1/J2
3.3V
POT
S1
DC_BUS
M1
M2
M3
M4