BTS6480SF datasheet(35/73 Pages) INFINEON

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SPOC - BTS6480SF

Protection Functions

Data Sheet

Rev. 1.0, 2010-04-12

Protection Functions

The device provides embedded protective functions, which are designed to prevent IC destruction under fault

conditions described in this data sheet. Fault conditions are considered as “outside” normal operating range.

Protective functions are neither designed for continuous nor for repetitive operation.

8.1

Over Current Protection

The maximum load current

L is switched off in case of exceeding the over current trip level IL(trip) by the device

itself. Depending on the total short circuit impedance higher current over shoots may occur. A limited auto-restart

function is implemented. The number of restarts is dependent of the

DS voltage. Please refer to following figures

for details.

Figure 10

Over current protection with latch due to reaching maximum number of retries

retry

ERR

CurrentTrippingDeltaT_nretry.emf

CL = 1

DS(Vtrip)

L(trip)

over current

normal

operation

IN /

OUTx

j(startn) + ∆

j(res)

j(start1)

j(start1) + ∆Tj(res)

j(start2) + ∆Tj(res)

n = 1

over load

removed

j(SC)

n= n

retry

* ERR-flag will be reset by standard

diagnosis readout during restart

Switch off by over

current switch off

Restart by dynamic

temperature sensor

Latch OFF due

maximum number of

retries reached

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