User manual

PICDEM™ MC LV
DEVELOPMENT BOARD
© 2006 Microchip Technology Inc. DS51554B-page 11
Chapter 2. System Level Architecture of the Board
2.1 HIGHLIGHTS
This items discussed in this chapter are:
• Board Block Diagram
• Control Section
• Power Inverter Section
• Power Supply
2.2 BOARD BLOCK DIAGRAM
Figure 2-1 gives a system level architecture of the PICDEM MC LV Development
Board. The board has three sections: control, power inverter and power supply.
FIGURE 2-1: BLOCK DIAGRAM
PWM0
S2
S3
REF
R14
PWM1
PWM2
PWM3
PWM4
PWM5
R60
I
MOTOR
Amplifier
Comparator
FaultA
I
MOTOR
R26
AN1
AN0
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
M
+24V
Conditioning
IC2
IC3
IC1
M3
M2
M1
U10:A
U7:D
RC5
RC4
FLTA
24V Power Supply
+5V
Regulator
+15V
Regulator
+15V
+5V
115/230V
50/60 Hz
AC Input
MPLAB
®
ICD 2
RS-232
IC2
IC3
IC1
0.1R,
2W
RA2
RA3
RA4
G
–
+
+5V
HA
HB
HC
IC2
IC3
IC1
J3
J20
J9
Driver
M2
M3
M1
J6
J1
BEMF Signal
PIC18FXX31/dsPIC30F2010
3-Phase
Bridge
Inverter