BTS6480SF datasheet(45/73 Pages) INFINEON

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SPOC - BTS6480SF

Diagnosis

Data Sheet

Rev. 1.0, 2010-04-12

Diagnosis

For diagnosis purpose, the SPOC - BTS6480SF provides a current sense signal at pin IS and the diagnosis word

via SPI. There is a current sense multiplexer implemented that is controlled via SPI. The sense signal can also be

disabled by SPI command. A switch bypass monitor allows to detect a short circuit between the output pin and the

battery voltage.

In OFF-state a current source is able to be switched on for a selected channel with the DCR.CSOL bit. This allows

open load / short circuit detection to

BB in OFF-state. The current value can be configured to a low or a high value

by programming the bit IECR.CSL. Please refer to parameter

L(OL) (9.8.15).

Note: Please note: All below stated parameters and functions are valid for the internal channels. The behavior of

the current sense of the two external channel is restricted to the behavior of the external drivers.

Please refer to Figure 18 for details on diagnosis function:

Figure 18

Block diagram: Diagnosis

channel 0

load

current

sense

Diagnosis_STD.emf

IS0

current sense multiplexer

gate

control

latch

temperature

sensor

ERR0

latch

DCR.MUX

DS(SB)

SBM

DCR.

OUT3

OUT2

OUT1

OUT0

VBB

CSOL

over current

protection

L(OL)

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