IHD215 CT-Concept Technologie AG, IHD215 Datasheet - Page 8

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

IHD 215/280/680
Data Sheet & Application Manual
components are required in the control
circuit or in the power section.
Reliable operation
Gate driving with a positive and negative
control voltage (depending on the selected
supply voltage between
15V) allows reliable operation of IGBT
modules of any size from any manufac-
turer. Thanks to the great interference
immunity achieved by using a negative
gate voltage, a number of power MOSFET
or IGBT modules can be connected in
parallel without having to worry about
parasitic switching operations or oscilla-
tions.
The components of the IHD type series
contain - for each of the two channels -
an electrical isolation between the control
and power sides, an overcurrent and
short-circuit protection circuit for the
power transistors, a supply-voltage moni-
toring circuit, a state acknowledgment
circuit as well as an electrically-isolated
supply of the drive electronics via an inte-
grated DC/DC converter.
The two drive channels operate inde-
pendently of each other, there is no
mutual logical linking or blocking.
Genuine electrical isolation
The electrical isolation realized on the
basis of the transformer principle at
operating voltages of up to 1000V
(corresponding to a test voltage of
4000V) between the control and power
sections as well as the extremely high
interference immunity of at least 50,000V
per microsecond predestine the drive
modules of the IHD series to applications
Page 8
I n t e r n e t :
12V and
w w w . C T - C O N C E P T . c o m
in which large potential differences and
large potential jumps occur between the
power section and the control electronics.
Application benefits
The extraordinarily short delay times of
the drivers of the IHD series permit their
use in high-frequency switchmode power-
supplies, high-frequency converters and
resonance converters. Thanks to their
extremely short delay times through the
driver, they ensure trouble-free operation
in bridge circuits, and their outstanding
properties also preclude any offset prob-
lems.
The use of driver modules of the IHD
series means that power stages with
power MOSFETs or IGBTs can be realized
within an extremely short time.
Short-circuit and over-
current protection
One of the basic functions of the intelli-
gent half-bridge drivers of the IHD series
is to ensure reliable protection of the con-
trolled power transistors against overcur-
rent and short circuit. The current meas-
urement is based on the determination of
the drain source or collector-emitter volt-
age at the activated transistor. If a
threshold defined by the user is exceeded,
the power transistor is turned off and
remains blocked in this state for a defined
minimum time. After this
elapsed, the transistor is turned on again
synchronously with the next turn-on edge
of the drive signal.
This protection concept can be used to
protect IGBT half-bridges and three-phase
modules in an effective and reliable way.
time
has