1EDI2002AS_15 Datasheet, PDF (42/147 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

a)
tPULSE < tTTOFF + 2. tSSOSC
Input Pulse
tPDON
tTTOFF
2. tSSOSC
tTTOFF
Output Pulse
EiceDRIVER™ SIL
1EDI2002AS
Functional Description
TTOFF Plateau
b)
tPULSE > tTTOFF + 2. tSSOSC
Input Pulse
tPDON
tTTOFF
tPDOFF
tTTOFF
Output Pulse
Figure 2-13 TTOFF: Principle of Operation
tPULSE
Two Level Turn-On (TTON)
In order to increase EM compatibility and the efficiency of the whole system, the 1EDI2002AS supports the Two
Level Turn-On functionality (TTON). The TTON function consists in switching the IGBT on in three steps in such
a way that:
1. The IGBT gate voltage is first increased until a specific (and programmable) voltage is reached by the TON
signal.
2. TON (and TOFF) voltage is stabilized at this level. The IGBT Gate voltage forms thus a plateau.
3. Finally, the switch-on sequence is resumed up to the maximum output voltage.
The TTON feature needs to be activated by configuring the delay with bit field SCFG2.TTOND.
Datasheet
42
Hardware Description
Rev. 3.1, 2015-07-30