Mitsubishi Electric PSS**S72FT Manual page 34

<Dual-In-Line Package Intelligent Power Module>
1200V Mini DIPIPM with BSD Series APPLICATION NOTE
Influence of pattern wiring around the shunt resistor is shown below.
(1) Influence of the part-A wiring
The ground of N-side IGBT gate is V
generated by the wiring parasitic inductance will result the potential of IGBT emitter variation during switching
operation. Please install shunt resistor as close to the N terminal as possible.
(2) Influence of the part-B wiring
The part-B wiring affects SC protection level. SC protection works by detecting the voltage of the CIN
terminals. If part-B wiring is too long, extra surge voltage generated by the wiring inductance will lead to
deterioration of SC protection level. It is necessary to connect CIN and V
shunt resistor and avoid long wiring.
(3) Influence of the part-C wiring pattern
C1R2 filter is added to remove noise influence occurring on shunt resistor. Filter effect will dropdown and noise
will easily superimpose on the wiring if part-C wiring is too long. It is necessary to install the C1R2 filter near CIN,
V terminals as close as possible.
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(4) Influence of the part-D wiring pattern
Part-D wiring pattern gives influence to all the items described above, maximally shorten the GND wiring is
expected.
Publication Date: September 2015
Drive circuit
P-side
IGBTs
N-side
IGBTs
Drive circuit
SC protection
Fig.3-1-12 External protection circuit
. If part-A wiring pattern in Fig.3-1-11 is too long, extra voltage
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DIPIPM
P
U
External protection circuit
V
W
N
A
CIN R2
C
C1
V
D
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terminals directly to the two ends of
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DC-bus current path
B
Shunt resistor
N1