12ASX2 datasheet(43/147 Pages) INFINEON

43 / 147 page

EiceDRIVER

™ SIL

1EDI2002AS

Functional Description

Datasheet

Rev. 3.1, 2015-07-30

Hardware 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 < tTTON),

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.

Figure 2-14 TTON: Principle of Operation

tPULSE < tTTON

tPDON

Input Pulse

Output Pulse

TTON Plateau

tPULSE > tTTON

tPDON

tTTON

tPULSE

tPDOFF

Input Pulse

Output Pulse

tTTON

12ASX2 Datasheet(PDF) 43 Page - Infineon Technologies AG