Specifications

36
Dec. 2012
Mitsubishi IPM-series Application Note
9-5 Other notice of using IPM
(1) The treatment of the terminal not to use
Type CLA,CLB have B terminal. These terminal aren’t connected to the circuit. The pattern can be
connected with this terminal. However, pay attention to the wiring. When connecting a pattern with these
terminals, the noise might invades IPM via the terminals. Please just leave these terminals open.
If any phase of the IPM is not used, the corresponded control power supply in the circuit will not use. Please
pull-up the corresponded input terminals and make IGBT off. This is to prevent the erroneous turn on of the
circuit by noise.
(2) The connection of the control side GND(V
NC
/V
*PC
) and output emitter GND (N or U/V/W)
Do not connect the control side GND and the output emitter GND on the printed circuit board. Otherwise It
will be easy to undergo influence by the noise. V
NC
and the N terminal are connected inside IPM. If
connecting VNC and N terminal, the current which should flow through N sometimes flows to VNC. Then,
the electric potential difference occurs between N and VNC by parasitic inductance inside and might cause
IC malfunction.
(3) The circuit structure inside
The IPM is built up with IGBT chip ,FWDi chip, Control IC and the other discreet parts(R,C).
Gate of IGBT chip is MOS structure. However, The gate of IGBT chip doesn’t directly connect to the control
terminal of IPM. VD, Input, Fo and GND terminal are connected to the control IC. It is possible to consider
the terminal of IPM to be a bipolar structure. The countermeasure against static electricity like conventional
IC with MOS structure is unnecessary to IPM.
(The handling of IPM is equal to that of a bipolar IC.)
(4) The parallel operation
The IPM is not recommended for parallel operation.
Because the balance of the switching time and the current are not identical, the IPM with larger loss might
be thermally damaged because it isn't possible to do the protection-coordination of each IPM.
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ࡄ࠲࡯ࡦࠍ࡟ࠗࠕ࠙࠻ߔࠆ
The course
of the current
The course
of the current
The noise which occurs with stray -current
㪣㪸㫐㫆㫌㫋㩷㫋㫆㩷㫇㪸㫊㫊㩷㫆㫅㫃㫐㩷㪸㩷㪺㫀㫉㪺㫌㫀㫋㩷㪺㫌㫉㫉㪼㫅 㫋㪅
IGBT
IN
Fo
C
E
Control IC
FWDi
VCC
GND
Drive
r
Using IPM