pm75cs1d120 Mitsumi Electronics, Corp., pm75cs1d120 Datasheet - Page 30

• Manufacturer Part Number: pm75cs1d120
• Description: Mitsubishi Ipm L1/s1-series Application Note Igbt Modules
• Manufacturer: Mitsumi Electronics, Corp.

The operating-sequence of the OT protection
The operating-sequence of the SC protection
Therefore, if received Fo signal, please stop the control signal and stop the operation of IPM.
Although IPM has internal protection circuit, it is recommended to ensure the stress which exceeds a
maximum rating does not happen repeatedly.
Because IPM doesn't exclude extraordinary cause, it has to be stopped by the system.
input signal
(Low=ON)
Fo signal
Condition of
Junction
temperature
Output current
Condition of
protection circuit
Output current
a1 : The normal operation=IGBT ON
a3 : IGBT OFF (Even if it makes an input signal to be on)
a4 : The overheating detection reset (OTr)
a5 : The normal operation=IGBT ON
a1 : The normal operation=IGBT ON
a2 : Short current detection (SCt)
a3 : IGBT gate is blocked softly.
a4 : IGBT turn off gradually.
a5 : Fo timer start (tFo=1.8ms typ.)
a6 : Input signal “H”=OFF
a7 : Input signal “L”=ON
a8 : IGBT maintains off. (When a6~a7 occurs at the time which is shorter than tA)
a2 : The overheating detection (OTt)
Gate of IGBT
protection circuit
input signal
Low=ON
Fo signal
Tj
I(A)
I(A)
a1
OTr
a1
SC
SET
OT
a2
a5
SET
a2
a3
a3
a4
30
a6
tA
a4
a8
a7
RESET
a5
RESET
Using IPM
Sep. 2008