TLE8242-2 Datasheet, PDF (21/78 Pages) Infineon Technologies AG – 8 Channel Fixed Frequency Constant Current Control With Current Profile Detection

TLE8242-2
Functional Description and Electrical Characteristics
The tested bits allow the distinction between a a case when a fault bit is not set because the fault is not detected,
and the case when a fault bit is not set because the diagnostic test has not completed. For instance, the calculated
duty cycle is too low to complete the short to battery test.
Two fault tested bits are defined:
The tested bit is set to 1 when the fault test has completed successfully.
Table 4 Diagnostics Tested Bits / Flags
Tested Type
OUTx High
Short to Ground and Open load OFF
tested
Short to Battery tested
Bit SB-T
Each fault type can be described by the two bits: FAULT and TESTED.
OUTx Low
Bit OFF-T
Table 5
FAULT
0
0
1
1
FAULT vs. TESTED Bits Matrix and Interpretation
TESTED Interpretation by microcontroller
0
This fault type has not been tested
1
No Fault - The fault type has been tested and no fault is present
0
This combination cannot occur
1
Fault - This particular fault type has occurred
Data Sheet
21
Rev. 1.0, 2010-02-09