1EDS20I12SV Datasheet, PDF (13/33 Pages) Infineon Technologies AG – Single-channel isolated IGBT Driver

EiceDRIVER™ Safe
1EDS - slew rate control IGBT driver IC
4
Functional description
4.1
Introduction
The 1EDS20I12SV is an advanced IGBT gate driver with various control and protection features to allow the
design of highly reliable systems. The integrated circuit consists of two reinforced isolated sides, called input
side and output side. The input side is typically interfaced with a CMOS-compatible standard DSP or a
microcontroller. The galvanically isolated output side is connected to the high voltage domain. The adjustable
gate current source allows the tuning of the IGBT turn-on slew rate to limit the EMI radiation.
The turn-off process is accomplished with an internal MOSFET stage capable of driving 2 A. An internal
MOSFET switch capable of driving 1 A is connected to an external high-impedance gate resistor and prevents
from an overvoltage at the IGBT in case of a short or an overcurrent.
The driver also includes IGBT desaturation protection for conventional IGBTs and overcurrent protection for
sense IGBTs with the fault status output terminal. Two ready status output terminals indicate whether the driver
is properly supplied and operates normally. A two-level turn-off feature with adjustable delay protects against
excessive overvoltage at turn-off in case of an overcurrent or a short. The same delay is applied at turn-on to
prevent pulse width distortions.
5V
5V
VCC1
/FLT
RDY2
RDY1
C1
PADP
INP
INN
EN
PADN
RF
SPEED
CF
SIGI
SIGO
GND1
Figure 3
GND
Typical application
VCC2
DESAT
CS
OCOFF
RSENSE
ON
VCC2
RD
CD
R_DESAT
C_DESAT
D_DESAT
RS
T2
T1
GATE
CZ
VZ
OFF
SOFF
PRB
VEE2
GND2
RSOFF
ROFF
R_PRB2 R_PRB1 ^VCC2
C3
C2
4.2
IC Supply
The start up of the input section and the output section of the 1EDS02I12SV needs approx. tbd µs for the VCC1/
PADP domains and tbd µs for the VCC2 domain. However, the IC is in a safe state in any case, meaning that
the gate drive outputs are never activated before each part of the IC is ready to operate. The startup times are
given in section 5.3.1.
Target datasheet
13
<Revision 0.73>, 05.06.2014