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This chapter describes the precautions when using IGBT module and application.
1. Selection of IGBT Module Ratings
When using IGBT modules, it is important to select modules with the voltage and current ratings most
suited for the intended application.
1.1 Voltage rating
The IGBT must have voltage rating that is suitable with the input voltage of the system in which it
will be installed. Table 3-1 shows the IGBT voltage ratings and applicable input voltages. Use this
table as a reference when selecting modules for a particular voltage application.
Table 3-1 IGBT rated voltage and application input voltage
Asia
North America
Europe
1.2 Current rating
When the collector current I
increase, resulting in an increase in the module temperature. Since the IGBT module must be used
with the virtual junction temperature T
temperature T
Incorrect selection of current rating may lead to module destruction or deterioration of reliability.
Note that in high frequency switching applications, switching loss increases, which increases the
module temperature.
As a basic selection criteria, it is common to select a module with current rating higher than √2
times of the AC output current RMS value of the inverter circuit. However, the selection of the current
rating depends on the operating conditions and heat dissipation conditions of the equipment, thus it is
important to select the current rating after checking the power loss and temperature rise in the
equipment.
REH984f
Area
Japan
South Korea
200VAC, 220VAC
China
U.S.A
U.K.
France
Germany
Russia
of the IGBT module increases, the conduction loss and switching loss
C
, I
must be set in order not to exceed T
vj(max)
C
IGBT rated voltage
600V
200VAC
400VAC, 440VAC
220VAC
120VAC, 208V,
460VAC, 480VAC
240VAC
230VAC
230VAC
230VAC
220VAC
of IGBT and FWD below the maximum virtual junction
vj
.
vj(max)
© Fuji Electric Co., Ltd. All rights reserved.
1200V
1700V
380VAC
380VAC
690VAC
(Industry high
voltage power
supply, wind power
480VAC
generation, etc.)
400VAC
400VAC
380VAC
3-2
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