Itrip And Gk Setup; Itrip Setup - Infineon EVAL-M1-IM818-A User Manual

EVAL-M1-IM818-A user guide
Evaluation power board with MADK M1 connector
System and functional description
Current feedback configuration in MCEWizard for EVAL-M1-101T and EVAL-M1-IM818-A
Figure 14
2.6.3

ITRIP and GK setup

2.6.3.1

ITRIP setup

Over-current protection circuit and ITRIP signal
Figure 15
IM818 series provides an over-current detection function by connecting the ITRIP input with the shunt
current feedback. The ITRIP comparator threshold (typ. 0.5 V) is referenced to VSS ground.
Set D8/9/10 drop is 0.15 V, then the typical over-current threshold (IOCP) is:
0.5+0.15
×
0.05
U phase: I =
2 ��31+��33
uOCP
0.5+0.15
0.05 ×
V phase: I =
2 ��31+��32
VOCP
0.5+0.15
0.05 ×
W phase: I =
2
wOCP
When the current is higher than 28.6 A, it will generate a shutdown for all outputs of the gate driver. The
shutdown propagation delay is typically 1 µs.
User guide
��31
=28.6A
��31
=28.6A
��31
=28.6A
��31+��34
19 of 35 Revision 1.4
2021-09-10