TLE9260-3QX Datasheet, PDF (104/175 Pages) Infineon Technologies AG – Dedicated Data Sheets are available for the different product variants

VCC1
VCC1,OV
TLE9260-3QX
Supervision Functions
t
t_{OV _filt}
RO
t_RD1
SBC Normal
SBC Restart
Figure 46 VCC1 Over Voltage Timing Diagram
t
SBC Normal
13.7
VCC1 Short Circuit Diagnostics
The short circuit protection feature for V_CC1 is implemented as follows (VS needs to be higher than V_S,UV):
• If VCC1 is not above the V_RTx within t_VCC1,SC after device power up or after waking from SBC Sleep Mode then
the SPI bit VCC1_SC bit is set, VCC1 is turned OFF, the FOx pins are enabled, FAILURE is set and SBC Fail-
Safe Mode is entered. The SBC can be activated again via wake on CAN, WKx.
• The same behavior applies, if V_CC1 falls below V_RTx for more than t_VCC1,SC.
Note: The VCC1_SC flag is not set during power up of V_CC1.
13.8
VCC2 Undervoltage and VCAN Undervoltage
An undervoltage warning is implemented for VCC2 and VCAN as follows:
• V_CC2 undervoltage Detection: In case V_CC2 will drop below the V_CC2,UV,f threshold, then the SPI bit VCC2_UV
is set and can be only cleared via SPI.
• V_CAN undvervoltage Detection: In case the voltage on V_CAN will drop below the V_{CAN_UV} threshold, then the SPI
bit VCAN_UV is set and can be only cleared via SPI.
Note: The VCC2_UV flag is not set during turn-on or turn-off of V_CC2.
Data Sheet
104
Rev. 1.1, 2014-09-26