TLE82453-3SA_15 Datasheet, PDF (33/71 Pages) Infineon Technologies AG – 3 Channel High-Side and Low-Side Linear Solenoid Driver IC

TLE82453-3SA
Protection Functions
Conditions for an overcurrent fault detection
1. I_load > I_{load_lim_H}
- power stage is disabled immediately, independent of OCDT filter
2. I_{load_lim_L} < I_{load_lim_H}
- NO quick shutoff
- Overcurrent condition needs to persist for t > t_OCDT
OR
- power stage changes its state if t < t_OCDT
to disable the power stage and issue a fault according to the fault assignment matrix
Table 8 Fault assignment matrix
Configuration of
Channel
Location of detected
overcurrent
LS
HS FET
LS
LS FET
HS
HS FET
HS
LS FET
X
Open load in ON
OLSB
X
X
X
OVC
X
X
I_load
I_{load_lim_H}
I _{load_lim_L}
PS off & fault bit set
t
Figure 12 High-level short circuit (I_L > I_{load_lim_H})
Data Sheet
-
33
Rev 1.0, 2015-03-27