TLE94106EL Datasheet, PDF (29/75 Pages) Infineon Technologies AG – Six half bridge power outputs

TLE94106EL
Half-Bridge Outputs
6.2
Protection & Diagnosis
The TLE94106EL is equipped with an SPI interface to control and diagnose the state of the half-bridge drivers.
This device has embedded protective functions which are designed to prevent IC destruction under fault
conditions described in the following sections. Fault conditions are treated as “outside” normal operating
range. Protection functions are not designed for continuous repetitive operation.
The following table provides a summary of fault conditions, protection mechanisms and recovery states
embedded in the TLE94106EL device.
Table 7 Summary of diagnosis and monitoring of outputs
Fault
condition
Error Flag Error bit: Status Register
(EF)
behaviour
Output
Protection
mechanism
Overcurrent Latch
1. Load Error bit, LE (bit 6) in
SYS_DIAG 1: Global Status 1
Register
2. Localized error for each HS and
LS channel of half-bridge,
HBn_HS_OC and HBn_LS_OC bits
in SYS_DIAG_2, SYS_DIAG_3 status
registers.
Error output
shutdown
and latched
Open load Latch
1. Load Error bit, LE (bit 6) in
None
SYS_DIAG 1: Global Status 1
Register
2. Localized error for each HS and
LS channel of half-bridge,
HBn_HS_OL and HBn_LS_OL bits in
SYS_DIAG_5, SYS_DIAG_6 status
registers.
Temperature Latch
pre-warning
Global error bit 1, TPW in
SYS_DIAG_1: Global Status 1
register
None
Temperature Latch
shutdown
Global error bit 2, TSD in
SYS_DIAG_1: Global Status 1
register
All outputs
shutdown
and latched.
Output Output and error
error flag (EF) recovery
state
High-Z
Half-bridge control
bits remain set
despite error,
however the
output stage is
shutdown. Clear EF
to reactivate
output stage.
No
An open load
state detection does not
change change the state of
the output.
EF to be cleared.
No
Not applicable
state
change
High-Z
Half-bridge control
bits remain set
despite error,
however the
output stage is
shutdown. Clear EF
to reactivate
output stage.
Data Sheet
29
1.0
2016-09-08