1EDI30J12CP Datasheet, PDF (23/28 Pages) Infineon Technologies AG – 1EDI EiceDRIVER™ Enhanced

EiceDRIVER™ Enhanced
1EDI30J12CP
Application Hints
+5V
C_VCC1
GND
VCC1 JFDrv
VCC2
GND1 MDrv
EN
VREG
CVReg
CVEE2
IN
IN
CLJFG
VEE2
BSEN
1EDI30J12Cx
-22V … -28V
Isolated,
fixed
Figure 12 MOSFET drain related supply
An alternative method of supplying the low-side driver is via a bootstrapping scheme from the high-side supply
(shown in Figure 13). This cascaded bootstrap supply transfers the needed energy via a bootstrapping capacitor
(C_BS) to the low-side.
Additional information on how to activate the bootstrap mode can be found in Chapter 3.2.4 Bootstrap supply
mode and start up.
HV supply
HV supply
+5V
CVCC1
GND
HS_IN
VCC1 JFDrv
VCC2
GND1 MDrv
EN
VReg
IN
CLJFG
VEE2
BSEN
1EDI30J12Cx
HV
related
CVReg CVEE2
Bootstrap HS
-19V … -28V
CBS
+5V
CVCC1
GND
HS_IN
VCC1 JFDrv
VCC2
GND1 MDrv
EN
VReg
IN
CLJFG
VEE2
BSEN
1EDI30J12Cx
C_VReg
C_VEE2
HV
related
Bootstrap HS
-19V … -28V
+5V
C_VCC1
GND
LS_IN
a)
Figure 13
VCC1
JFDrv
VCC2
+5V
C_VCC1
VCC1
JFDrv
VCC2
GND1
EN
MDrv
VReg
C_VReg C_VEE2
GND
GND1
EN
MDrv
VReg
CVReg CVEE2
IN
CLJFG
VEE2
LS_IN
IN
CLJFG
VEE2
BSEN
BSEN
1EDI30J12Cx
b)
1EDI30J12Cx
Cascaded bootstrap supply, a) cascode configuration, b) only JFET
In case a normally off behavior is not needed or desired the JFET can be used without the cascoded MOSFET.
Topologies depicting a normally on circuit are shown in Figure 10 b), Figure 11 b) and Figure 13 b).
In these cases a short circuit in a failure event cannot be prevented due to the fact that every safety aspect of the
Direct Drive JFET Topology is deactivated.
Preliminary Datasheet
22
Rev. 1.3, 2014-11-12