MOTOROLA
56F805EVM Schematics
A-9
Figure
A
-8
. S
eco
nda
ry
U
NI-3
Bac
k
-EMF, Ov
er-Volta
ge a
nd
O
ve
r-C
u
rr
ent Se
nse
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
SECONDARY UNI-3 CONNECTOR
PFC ZERO CROSSING JUMPER
PFC PWM JUMPER
PFC INHIBIT JUMPER
SECONDARY UNI-3
SERIAL COM
COM JUMPER
PHASE B BACK EMF
PHASE C BACK EMF
PHASE A BACK EMF
M
O
T
OR PHASE A CURRENT SENSE
MOTOR
DRIVE TEMPERATURE SENSE
M
O
T
OR PHASE C CURRENT SENSE
M
O
TOR DRIVE BRAKE CONTROL
PWM_AT
PWM_AB
PWM_BT
PWM_BB
PWM_CT
PWM_CB
M
O
T
OR PHASE B CURRENT SENSE
PHASE A ZERO CROSSING
P
HASE B ZERO CROSSING
PHASE C ZERO CROSSING
SECO
NDARY UNI-3 OVER-VOLTAGE
FAULT DETECTION
FAULT SENSE 0
DSP PWM 1
UNATTACHED SECONDARY UNI-3 SIGNALS
SECONDARY
UNI-3 DC BUS CURRENT SENSE
SECONDARY UNI-3 BACK-EMF, OVER-VOLTAGE AND O
VER-CURRENT SENSE
B
D
S
P
5
6
F
8
0
5
EVM.DSN
Tuesday, July 04,
2
0
0
0
Development
Tools
1
8
8
1.3
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u
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Title
Size
Docu
ment
N
u
mber
Date:
Designe
r:
Rev
.
Sheet
o
f
SU3_V_S_DCB
SU3_BK_EMF_A
SU3_BK_EMF_C
SU3_BK_EMF_B
SU3_PFC_PWM
S
U
3_PFC_ZERO_CROSS
SU3_SERIAL_COMM
SU3_PFC_INHIBIT
S
U
3_PFC_ZERO_CROSS
SU3_PFC_PWM
SU3_SERIAL_COMM
SU3_PFC_INHIBIT
SU3_V_S_DCB
SU3_BK_EMF_A
SU3_BK_EMF_C
SU3_PHB_IS
SU3_BK_EMF_B
SU3_PHA_IS
SU3_PHC_IS
SU3_I_S_DCB
PWMB0
PWMB1
PWMB2
PWMB3
PWMB4
PWMB5
PB6
TD3
PB7
TD0
TC1
FAULTB0
SU3_PHA_IS
SU3_PHC_IS
SU3_PHB_IS
SU3_TEMP
SU3_ZERO_X_A
SU3_ZERO_X_C
SU3_ZERO_X_B
SU3_ZERO_X_B
SU3_ZERO_X_A
SU3_ZERO_X_C
SU3_I_S_DCB
+3.3V
+5.0V
+5.0V
+5.0V
+
-
U6B
LM393A
5
6
7
8
4
J31
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
JG4
1
3
5
7
2
4
6
8
J14
1
3
5
7
9
11
13
2
4
6
8
10
12
14
C3
0.1uF
R4
5.1K
R5
10K-TP
R1
16K
R2
16K
R3
1
M
F
re
e
sc
a
le
S
e
m
ic
o
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to
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I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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c
.
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