TLE9263QX datasheet(106/164 Pages) INFINEON

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Data Sheet

106

Rev. 1.1, 2014-09-26

TLE9263QX

Supervision Functions

15.4

Under Voltage VS and VSHS

If the supply voltage VS reaches the under voltage threshold VS,UV then the SBC does the following measures:

•

SPI bit VS_UV is set. No other error bits are set. The bit can be cleared once the condition is not present

anymore,

•

VCC3 is disabled (see Chapter 8.2) unless the control bit VCC3_VS_ UV_OFF is set

•

The VCC1 short circuit protection becomes inactive (see Chapter 15.7). However, the thermal protection of

the device remains active.

If the under voltage threshold is exceeded (VS rising) then functions will be automatically enabled again.

If the supply voltage VSHS passes below the under voltage threshold (VSHS,UVD) the SBC does the following

measures:

•

HS1...4 are acting accordingly to the SPI setting (see Chapter 9)

•

LINx is switched to LIN Receive Only Mode;

•

SPI bit VSHS_UV is set. No other error bits are set. The bit can be cleared once the condition is not present

anymore,

•

VCC1, VCC2, WKx and CAN are not affected by VSHS under voltage

15.5

Over Voltage VSHS

If the supply voltage VSHS reaches the over voltage threshold (VSHS,OVD) the SBC triggers the following measures:

•

HS1...4 are acting accordingly to the SPI setting (see Chapter 9)

•

SPI bit VSHS_OV is set. No other error bits are set. The bit can be cleared once the condition is not present

anymore,

•

VCC1, VCC2, VCC3, WKx, LIN and CAN are not affected by VS over voltage

15.6

VCC1 Over-/ Under Voltage and Under Voltage Prewarning

15.6.1

VCC1 Under Voltage and Under Voltage Prewarning

A first-level voltage detection threshold is implemented as a prewarning for the microcontroller. The prewarning

event is signaled with the bit VCC1_ WARN. No other actions are taken.

As described in Chapter 15.1 and Figure 53, a reset will be triggered (RO pulled ‘low’) when the

CC1 output

voltage falls below the selected under voltage threshold (VRTx). The bit VCC1_UV is set and the SBC will enter

SBC Restart Mode.

Note: The VCC1_ WARN or VCC1_UV bits are not set in Sleep Mode as

CC1 = 0V in this case

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