IHD215 CT-Concept Technologie AG, IHD215 Datasheet - Page 15

• Manufacturer Part Number: IHD215
• Description: Intelligent Half-bridge Drivers For Igbts And Power Mosfets
• Manufacturer: CT-Concept Technologie AG

Pin 35 pin 24
Terminal COM1 COM2
This is the ground terminal of the secon-
dary-side blocking capacitor. It is simulta-
neously used as the reference potential for
the measurement filter and the capacitors
Cb1 Cb2 .
In place of E1 E2 , the terminal COM1
source of a power MOSFET. In this case,
the reference must also applied to this
terminal. This circuit allows power MOS-
FETs to be driven without a negative gate
voltage. The transistor is then driven in its
deactivated state with 0V (unipolar gate
driving, see Fig. 8).
The terminal E1 E2
circuit and may under no circumstances
be connected with COM1 COM2 .
As a rule, this method of gate driving is
not useful for IGBTs, as it is necessary to
work with a negative gate voltage, espe-
cially with Japanese chips and larger
I n t e r n e t :
IHDxxx
Fig. 8 Unipolar gate driving (0/+15V)
COM2 can also be connected to the
30
36
32
35
ME1
G1
REF1
COM1
Pin 33 (E1) is not used
Dref
w w w . I G B T - D r i v e r . c o m
is unused in this
Cme
Rme
Rg
Dme
Data Sheet & Application Manual
modules.
Configuration within the
Power Section
The drivers of the IHD series should be
located as closely as possible to the power
transistors. The connecting leads to the
transistors should be as short as possible,
i.e. they can be up to 10 cm long depend-
ing on the gate current and switching
speed. In contrast, the input leads may be
about 25 cm in length (see Fig. 9). But as
has already been described, care should
be taken to ensure that all leads are run in
a neat pattern.
IHD 215/280/680
Page 15