TLE4998P3 datasheet(24/34 Pages) INFINEON

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TLE4998P

Error Detection

Data Sheet

V 1.0, 2008-07

Error Detection

Different error cases can be detected by the On-Board-Diagnostics (OBD) and reported

to the microcontroller. The OBD is useful only when the clamping function is enabled.

7.1

Voltages Outside the Operating Range

The output signals error conditions if

VDD crosses the overvoltage threshold level.

Table 15

Overvoltage

7.2

EEPROM Error Correction

The parity method is able to correct one single bit in one EEPROM line. One other single-

bit error in another line can also be detected. As this situation is not correctable, this

status is signalled at the output pin by clamping the output value to

CYPWM = 100%.

Table 16

EEPROM Error Signalling

Parameter

Symbol

Limit Values

Unit

Notes

min.

typ.

max.

Overvoltage threshold

VDDov

16.65

17.5

18.35

Output duty cycle

@ overvoltage

CYPWMov 100

1) Output stays in “off” state (high ohmic)

Parameter

Symbol

Limit Values

Unit

Notes

min.

max.

Output duty cycle

@ EEPROM error

CYPWMerr 100

1) Output stays in “off” state (high ohmic)

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