Recommended Wiring Method Around Shunt Resistor - Mitsubishi Electric PSSxxMC1Fx Manual

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DIPIPM+ Series Application note

3.1.7 Recommended wiring method around shunt resistor

External shunt resistor is necessary to detect short-circuit accident. If applied a longer patterning between the
shunt resistor and DIPIPM, it causes so much large surge that might damage built-in IC. To decrease the pattern
inductance, the wiring between the shunt resistor and DIPIPM should be connected as short as possible and
using low inductance resistor such as SMD (Surface Mounted Device) resistor instead of long-lead resistor.
Fig.3-1-10 Wiring instruction (In the case of using with one shunt resistor)
Fig.3-1-11 Wiring instruction (In the case of using with three shunt resistors)
Publication Date: September 2016
DIPIPM
NU
NV
V
NC NW
Shunt
resistor
DIPIPM
NU
NV
V
NC NW
NU, NV, NW should be connected each other at near terminals.
It is recommended to make the inductance of this part
(including the shunt resistor) under 10nH.
e.g.
Inductance of copper pattern
(width=3mm, length=17mm) is about 10nH.
N1
Connect GND wiring from V
shunt resistor terminal as close as possible.
It is recommended to make the inductance of each
phase (including the shunt resistor) less than 10nH.
e.g.
Inductance of copper pattern
(width=3mm, length=17mm) is about 10nH.
N1
Connect GND wiring from V
Shunt
shunt resistor terminal as close as possible.
resistors
36
terminal to the
NC
terminal to the
NC