< Dual-In-Line Package Intelligent Power Module >
Series Application note
Publication Date: September 2016
30
3.1.2 Interface Circuit (Direct Coupling Interface example for using one shunt resistor)
Fig.3-1-2 shows a typical application circuit of interface schematic, in which control signals are transferred directly
input from a controller (e.g. MCU).
Fig.3-1-2 Interface circuit example in the case of using with one shunt resistor
Long GND wiring might generate noise to input signal
and cause IGBT malfunction
M
MC
U
C2
15V
VD
C4
R1
Shunt resistor
N1
C
5V
+
C1
D
D1
C3
+
R2
5.1k
Ω
C2
+
C1 D1 C2
C5
R3
C5
R3
Brake
Resistor
Prevention circuit
for inrush current
P
(32)
U
(31)
V
(30)
W
(29)
NW
(26)
LVIC
NV
(27)
NU
(28)
HVIC
S
(35)
T
(34)
B
(33)
LVIC
Power GND patterning
Control GND patterning
C5
R3
C5
R3
C5
R3
C5
R3
C5
R3
+
+
A
B
U
N
(17)
V
N
(18)
W
N
(19)
Fo
(20)
V
VFB
(9)
V
P
(14)
V
WFB
(11)
W
P
(15)
U
P
(13)
V
NC
(25)
V
P1
(16)
V
UFB
(7)
V
OT
(21)
P1(1)
N1 (2)
N(B) (3)
AIN
(5)
V
NC
(4)
V
P1
(6)
V
UFS
(8)
V
VFS
(10)
V
WFS
(12)
R
(36)
V
N1
(24)
CIN
(22)
CFo
(23)
X
Y
X
Y
Long wiring might cause short
circuit failure
AC input
Long wiring might cause SC level fluctuation
and malfunction
