Microchip Technology dsPIC33CK User Manual

dsPIC33CK Low-Voltage Motor Control Board User’s Guide
DS50002927A-page 36  2020 Microchip Technology Inc.
FIGURE 3-4: CURRENT SENSE CONFIGURATION
(1)
PGND
Three-Phase Inverter Bridge
VDC
Phase A Current (+)
Phase A Current
(
-
)
Rsh1
(
0.010ȍ
)
Phase B Current (+)
Phase B Current
(
-
)
Rsh1
(
0.010ȍ
)
Phase C Current (+)
Phase C Current
(
-
)
Rsh1
(
0.010ȍ
)
Bus Current (+)
Bus Current (-)
Rsh1
(
0.010ȍ
)
U5A
MCP6024
Phase A Current (-)
-
+
Phase A Current (+)
V
REF
(+1.65V)
U5B
Phase B Current (-)
-
+
Phase B Current (+)
V
REF
(+1.65V)
U5C
Phase C Current (-)
-
+
Phase C Current (+)
V
REF
(+1.65V)
U15
MCP651S
Bus Current (-)
-
+
Bus Current (+)
V
REF
(+1.65V)
CMP1
-
C
M
M
P
+
OA1
dsPIC33CK256MP508
Phase A Current (-)
-
+
Phase A Current (+)
V
REF
(+1.65V)
DNP
OA2
Phase B Current (-)
-
+
Phase B Current (+)
V
REF
(+1.65V)
DNP
OA3
Bus Current (-)
-
+
Bus Current (+)
V
REF
(+1.65V)
DNP
DAC
ADC
HRPWM
PG1
PG2
PG4
Fault PCI I/P
V
REF
(+1.65V)
U5D
-
+
+1.65V (+3.3VA/2)
AGND
IBUS_FILT_EXT
IBUS_EXT
IC_EXT
IB_EXT
IA_EX
T
IB
R121
R129
R108
C66
0R
R125
IA
0R
R133
0R
R141
R137
I
BUS
Note 1: This is a representational diagram only; for detailed schematics, refer to Appendix A. “Schematics
and Layout”.

Microchip Technology dsPIC33CK Specifications

General

Brand	Microchip Technology
Model	dsPIC33CK
Category	Computer Hardware
Language	English