2ED100E12-F2_EVAL Infineon Technologies, 2ED100E12-F2_EVAL Datasheet - Page 12

• Manufacturer Part Number: 2ED100E12-F2_EVAL
• Description: Power Management IC Development Tools Eval Driver Board EconoDual
• Manufacturer: Infineon Technologies

Using these values and the equivalent circuit, it is possible to determine the maximum board temperature, if
the power losses of the external gate resistors, the maximum ambient temperature and the maximum
baseplate temperature are known:
The maximum switching frequency will be determined when either the maximum allowable board
temperature has been reached (105°C) or when the limit of power transmission of the DC/DC converter (1.5
W per channel) is exceeded.
3.4
Two complementary pairs of transistors are used to amplify the driver ICs signal. This allows driving IGBTs
that need more current than the driver IC can deliver. Two NPN transistors are used for switching the IGBT
on and two PNP transistors for switching the IGBT off. Resistors in the individual base connections ensure
proper parallel operation.
The transistors are dimensioned to have enough peak current to drive all 600 V and 1200 V EconoDUAL™3
and EconoPACK™+ modules. Peak current can be calculated like in formula (2):
Figure 8
Gate resistors are connected in between booster stage and IGBT module gate connection. Suggested
values are provided in tables 5 and 7. For some modules the value for these resistors is 0 Ohm. In this case
just a jumper is required. If resistors are needed ensure that these resistors have a suitable rating for
repetitive pulse power to avoid degradation.
3.5
The short circuit protection of the Evaluation Driver Board basically relies on the detection of a voltage level
higher as 9 V on the DESAT pin of the 1ED020I12-F driver IC and the implemented active clamp function.
Thanks to this operation mode, the collector-emitter overvoltage, which is a result of the stray inductance and
Application Note
T
G
Booster
Booster
Short circuit protection and clamp function
T
A
R
thB
R
thR
G
( *
A
Driver board for EconoDUAL™3 and EconoPACK™+
T
I
peak
BASE
R
thB
R
G
int
G
T
12
R
A
G
V
)
ext
out
R
P
Driver
Rgext
*
R
R
thR
thR
A
A
*
R
R
thB
thB
Application Note
V1.2, 2009-08
AN2008-02
G
G
(2)