TLE8110ED datasheet(29/74 Pages) INFINEON

29 / 74 page

Data Sheet

Rev. 1.0

2018-03-07

TLE8110ED

Smart Multichannel Low Side Switch with Parallel Control and SPI Interface

Diagnosis

Refer to Figure 16 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 [10B] 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 ≥ tOFFcl_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 16 for the procedure flow-chart.

Figure 16

Diagnosis Confirmation procedure

Diagnosis Confirmation

SCG

take SCG action

yes

OCT

yes

DEVS.DCCx=0

(disable OFF-diag)

DCC.DRxCL

(clear diagnosis)

DCC.DRx

(read Diagnosis)

DEVS.DCCx=1

(enable OFF-diag)

OCT

yes

take OCT action

take OL action

DCC.DRx

(read diagnosis)

no actions

wait

td(max) with

Channel OFF

yes

DCC.DRx

(read Diagnosis)

wait

tOFFcl_l(max) with

Channel ON

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