TLE8082ES datasheet(24/61 Pages) INFINEON

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5.1.5

5 V Communication supply

The output COM5V of the 5 V communication supply follows the voltage level at pin V5VI. The communication

supply is supplied out of pin V6VI.

The output is protected against overload (e.g short to GND) and overtemperature. In case of an overcurrent, the

output current is limited and the diagnosis bit is set. The diagnosis bit is cleared with a readout of register

DIAG0 if no overcurrent is present anymore.

The 5 V communication supply is designed for low battery operation (see Communication supply low drop

resistance).

The 5 V communication supply can be deactivated through SPI configuration of bit T5VEN in the CONFIG

A capacitor, at the pin COM5V is recommended for stable operation and ripple reduction.

5.2

Voltage monitoring

The TLE8082ES implements an undervoltage detection and overvoltage detection at pins V5VI, T5V and COM5V.

All undervoltage and overvoltage diagnosis bits are located in the register DIAG0.

The V5VI undervoltage detection monitors the pin V5VI. Two thresholds are implemented, one for rising

voltages and one for falling voltages. For falling voltages the diagnosis bit is set if the voltage level is below

the V5VI Undervoltage detection threshold 2. If the voltage level is above V5VI Undervoltage detection

threshold 1, the diagnosis bit is reset after an SPI read out. An Undervoltage detection filter time is

implemented. In case of an undervoltage, the V5VI undervoltage reset is triggered (see Chapter 4.2).

The V5VI overvoltage detection monitors the pin V5VI. For voltage levels above V5VI Overvoltage detection

threshold, the diagnosis bit is set. If the voltage level is below the threshold, the diagnosis bit is reset

after an SPI read out. An Overvoltage detection hysteresis and an Overvoltage detection filter time are

implemented.

The T5V undervoltage detection monitors the pin T5V. For voltage levels below the T5V Undervoltage

detection threshold, the diagnosis bit is set. If the voltage level is above the threshold, the diagnosis bit

is reset after an SPI read out. An Undervoltage detection hysteresis and an Undervoltage detection filter

time are implemented.

The T5V overvoltage detection monitors the pin T5V. For voltage levels above the T5V Overvoltage detection

threshold, the diagnosis bit is set. If the voltage level is below the threshold, the diagnosis bit is reset

after an SPI read out. An Overvoltage detection hysteresis and an Overvoltage detection filter time are

implemented.

The COM5V undervoltage detection monitors the pin COM5V. For voltage levels below the COM5V Undervoltage

detection threshold the diagnosis bit is set. If the voltage level is above the threshold, the diagnosis bit is reset

after an SPI read out. An Undervoltage detection hysteresis and an Undervoltage detection filter time are

implemented.

The COM5V overvoltage detection monitors the pin COM5V. For voltage levels above the COM5V Overvoltage

detection threshold the diagnosis bit is set. If the voltage level is below the threshold, the diagnosis bit is

reset after an SPI read out. An Overvoltage detection hysteresis and an Overvoltage detection filter time are

implemented.

TLE8082ES

Small engine management IC

Power supply and voltage monitoring function

Datasheet

Rev. 1.0

2021-03-23

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