BTS 5562E Infineon Technologies, BTS 5562E Datasheet - Page 31

• Manufacturer Part Number: BTS 5562E
• Manufacturer: Infineon Technologies

Specifications of BTS 5562E

• Packages: PG-DSO-36
• Channels: 5.0
• Channel Mix: 3x50mohm+2*130mohm
• Led Mode: No
• Cranking Mode: No
• Pwm Engine Integrated: No

Current Sense Multiplexer
There is a current sense multiplexer implemented in the SPOC - BTS5562E 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
31
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 - BTS5562E
Rev. 1.0, 2008-05-15
MuxTiming.emf
t
t
Diagnosis
V
DS
.