™
PROFET + 24V
BTT6200-4ESA
Diagnostic functions
7.3.2
SENSE signal timing
Figure 23 shows the timing during settling and disabling of the SENSE.
VINx
t
ILx
tONx
tOFFx
tONx
90% of
IL static
t
VDEN
t
IIS
tsIS(LC)
tsIS(chC)
tsIS(OFF)
tsIS(ON)
tsIS(ON_DEN)
90% of
IIS static
t
t
VDSEL
VINy
t
ILy
tONy
t
current sense settling disabling time.vsd
Figure 23
Current sense settling / disabling timing
7.3.3
SENSE signal in open load
7.3.3.1
Open load in ON diagnostic
If the channel is ON, a leakage current can still flow through an open load, for example due to humidity. The
parameter IL(OL) gives the threshold of recognition for this leakage current. If the current IL flowing out the
power DMOS is below this value, the device recognizes a failure, if the DEN (and DSEL) is selected. In that case,
the SENSE current is below IIS(OL). Otherwise, the minimum SENSE current is given above parameter IIS(OL)
.
Figure 24 shows the SENSE current behavior in this area. The red curve shows a typical product curve. The blue
curve shows the ideal current sense.
Datasheet
30
Rev. 1.00
2019-03-09
INFINEON [ Infineon ]
