BTS 5572E Infineon Technologies, BTS 5572E Datasheet - Page 32
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BTS 5572E
Manufacturer Part Number
BTS 5572E
Description
Manufacturer
Infineon Technologies
Datasheet
1.BTS_5572E.pdf
(46 pages)
Specifications of BTS 5572E
Packages
PG-DSO-36
Channels
5.0
Channel Mix
3x50mohm+2*130mohm
Led Mode
Yes
Cranking Mode
No
Pwm Engine Integrated
No
Current Sense Multiplexer
There is a current sense multiplexer implemented in the SPOC - BTS5572E that routes the sense current of the
selected channel to the diagnosis pin IS. The channel is selected via SPI register DCR.MUX. The sense current
also can be disabled by SPI register DCR.MUX. For details on timing of the current sense multiplexer, please refer
to
Figure 16
8.3
To detect short circuit to
output pin OUT and
circuit (bypass) with undefined ratio. As a result, the current sense signal will show lower values than expected by
the load current. In OFF-state, the output voltage will stay close to
The switch bypass monitor compares the voltage V
by the current sense multiplexer (DCR.MUX) with threshold
register DCR.SBM.
Data Sheet
Figure
DCR.MUX
16.
CS
I
Timing of Current Sense Multiplexer
Switch Bypass Diagnosis
IS
110
V
BB
000
in ON-state, the current will flow through the power transistor as well as through the short
V
BB
, there is a switch bypass monitor implemented. In case of short circuit between the
t
sIS (E N)
001
DS
across the power transistor of that channel which is selected
32
t
s IS (MUX )
V
DS(SB)
. The result of comparison can be read in SPI
V
BB
potential which means a small
110
t
dIS (MUX )
SPOC - BTS5572E
Rev. 1.0, 2008-05-15
MuxTiming.emf
t
t
Diagnosis
V
DS
.