< Dual-In-Line Package Intelligent Power Module >
Series Application note
Publication Date: September 2016
36
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)
Connect GND wiring from V
NC
terminal to the
shunt resistor terminal as close as possible.
Shunt
resistors
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
V
NC
DIPIPM
NU
NV
NW
Connect GND wiring from V
NC
terminal to the
shunt resistor terminal as close as possible.
Shunt
resistor
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
NU, NV, NW should be connected each other at near terminals.
V
NC
DIPIPM
NU
NV
NW