TLE8110EE_13 Datasheet, PDF (30/74 Pages) Infineon Technologies AG – Overvoltage, Overtemperature, ESD -Protection

TLE 8110 EE
Smart Multichannel Switch
Diagnosis
8.1.1 Open Load diagnosis
If an OL is read out of the Diagnosis Register, the following procedure is required in order to confirm the channel
status and ensure a safe operation of the device:
After reading the OL [01_B] in the diagnosis register (Chapter 12.3.2)
1. Switch-OFF for t ≥ t_d(max) the related channel (via serial or direct control, see Chapter 12.3.3 and
Chapter 12.3.4)
2. Read again the diagnosis register
a) If OL is confirmed Then take actions according to system implementation
3. Continue normal operation
Refer to Figure 17 for the procedure flow-chart.
8.1.2 Overcurrent / Overtemperature diagnosis
After an OCT assertion the related channel is switched OFF for safety reasons. If an OCT is read out of the
Diagnosis Register, the following procedure is required in order to confirm the channel status and ensure a safe
operation of the device:
After reading the OCT [10_B] in the diagnosis register (Chapter 12.3.2)
1. Set related bit DEVS.DCCx = 0 to disable OFF-diagnosis, see Chapter 12.3.6
2. Clear the Diagnosis issuing a DCC.DRxCL command, see Chapter 12.3.2
3. Switch-ON for t ≥ t_{OFFcl_l(max)} the related channel
4. Read again the diagnosis register
a) If OCT is confirmed Then take actions according to system implementation
5. Set related bit DEVS.DCCx = 1 to enable OFF-diagnosis
6. Continue normal operation
Refer to Figure 17 for the procedure flow-chart.
Data Sheet
30
Rev. 1.4, 2013-07-02