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KIT33771TPLEVB evaluation board,
Rev. 2.0
14
NXP Semiconductors
Getting to know the hardware
3.12 Fault detection
The KIT33771PTLEVB uses an optocoupler to detect a fault that is dependent on user defined internal or external faults.
The Fault signal can be chained between EVBs and can be made available on the controller inputs. With two KIT33771TPLEVB boards,
the fault is chained as shown below.
Figure 10. Fault detection
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FAULT_HIGH
KIT3371TPLEVB_high
R50
1
IC3
2
PS2703-1-F3-K-A
4
3
10.0 K
R53
10 K
FAULT_OUT
4
3
2
1
J4
DNP
C48
TBD
300 K
R52
FAULT_RTN
KIT3371TPLEVB_LOW
GPIO0
VCOM
VPWR_LOW
R112
10.0 K
R58
10 K
4
3
2
1
J3
3
2
1
NTC1
10K
R103
1.0 K
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C89
2200 pF
C88
1000 pF
JP31
13
ZD1
BZX84C4V7-E3-08
NC
2
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