1EDI2002AS_15 Datasheet, PDF (43/147 Pages) Infineon Technologies AG – Single Channel Isolated Driver for Inverter Systems AD Step

EiceDRIVER™ SIL
1EDI2002AS
Functional Description
The plateau voltage level can be configured during run time by updating bit field SCTRL.GPONS. This bit field can
also be programmed to a value generating a hard turn-on.
When using the TTON function (with a non-zero delay), the PWM command is received on pin INP is not delayed
by the programmed TTON delay time (Figure 2-14). However, the minimum pulse width that can be generated
corresponds to the programmed TTON delay. Thus, for input pulses smaller than the TTON delay (t_PULSE < t_TTON),
the output pulse width is extended.
The device allows for external booster voltage compensation at the IGBT gate. When bit SCFG2.VBEC is cleared,
the voltage at TON at the plateau corresponds to the programmed value. When bit SCFG2.VBEC is set, an
additional V_BE (base emitter junction voltage of an internal pn diode) is added to the programmed voltage at TON
in order to compensate for the V_BE of an external booster.
The TON and TTOFF functions can be used simultaneously.
a)
tPULSE < tTTON
Input Pulse
tPDON
TTON Plateau
Output Pulse
tTTON
b)
tPULSE > tTTON
Input Pulse
tPDON
tTTON
tPDOFF
Output Pulse
tPULSE
Figure 2-14 TTON: Principle of Operation
Datasheet
43
Hardware Description
Rev. 3.1, 2015-07-30