pm75cs1d120 Mitsumi Electronics, Corp., pm75cs1d120 Datasheet - Page 32

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

11-6. Control Power supply of IPM
(1) The control power supply
The control supply voltage range should be within the limits shown in the specifications.
Specifications for Ripple Noise
Control Supply Starting up and Shutting Down Sequence
When the noise on the power supply line is a high frequency (pulse-width<about 50ns,pulse-vibration<about
5V) which does not cause an Fo output from IPM, the noise can be ignored.
The power supply should be a low impedance, be careful of the pattern layout.
Connect a bypass condenser with good frequency response and a smoothing condenser close to the
terminals of IPM. It is effective for the prevention of the malfunction.
Control supply VD should be started up prior to the main supply (P-N supply).
Control supply VD should be shut down after the main supply (P-N supply).
If the main supply had been started up before the control supply, or if the main supply remains after
control supply was shut down, external noise might cause the IPM malfunction.
As for the P-side, use the control power supply which was insulated in each of all of the 2 aspects.
As for the N-side , because the GND in 2 aspects and the converter part is common, a common power can
be used for the three control sources in amount.
High frequency noise super imposed on the control IC supply line might cause IC malfunction and cause an
Fo signal output, and results IPM stop (interrupt gates). To avoid such malfunction, the supply circuit should
be designed such that the noise fluctuation is smaller than +/- 5V/us, and the ripple voltage is less than 2V.
Control supply voltage V
Specification:
12.5~13.5
13.5~16.5
4.0~12.5
16.5~20
0~4.0
20.0~
dv
dt
D
5
(V)
V
/
us
It is almost the same as no power supply.
External noise may cause IPM malfunction (turns ON).
Supply under-voltage protection will not operate and no
Fo signal will be asserted.
Even if control input signals are applied, IGBT does not work
Supply under-voltage protection starts operation and outputs Fo
signals.
Switching operation works. However, this value is below the
recommended one, V
specified values, it may increase collector dissipation and
junction temperature.
Recommended values.
Switching operation works. This range, however, is over the
recommended value, thus, too fast switching speed might
cause the chips to be damaged
The control circuit will be destroyed.
,
Vripple 2
32
Vp
p
CE(sat)
Operation behavior
and switching time will be out of the
Using IPM
Sep. 2008