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| BTS5235-2G Datasheet, PDF (21/25 Pages) Infineon Technologies AG – Smart High-Side Power Switch | |||
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Smart High-Side Power Switch
BTS5235-2G
Diagnosis
7.3
Sense Enable Function
The diagnosis signals have to be switched on by a high signal at sense enable pin (SEN). See Figure 18 for details
on the timing between SEN pin and diagnosis signal IIS. Please note that the diagnosis is disabled, when no signal
is provided at pin SEN.
SEN
IIS
tsIS(SEN)
tdIS(SEN)
tsIS(SEN)
t
tdIS(SEN)
t
SEN.emf
Figure 18 Timing of Sense Enable Signal
The SEN pin circuit is designed equally to the input pin. Please refer to Figure 5 for details. The resistors Rlim are
recommended to limit the current through the sense pins IS1 and IS2 in case of reverse polarity and over voltage.
Please refer to maximum ratings on Page 8.
The stand-by current of the BTS5235-2G is minimized, when both input pins (IN1 and IN2) and the sense enable
pin (SEN) are on low level.
7.4
Electrical Characteristics
Vbb = 9 V to 16 V, Tj = -40 °C to +150 °C, VSEN = 5 V, (unless otherwise specified)
typical values: Vbb = 13.5 V, Tj = 25 °C
Pos. Parameter
Symbol Limit Values Unit
min. typ. max.
General Definition
7.4.1 Diagnostics signal in failure mode
VIS(fault)
5
â
9V
7.4.2 Diagnostics signal current limitation in failure IIS(LIM)
mode
Open Load at OFF-State
7.4.3 Open load detection threshold voltage
VOUT(OL)
7.4.4 Sense signal invalid after negative input slope td(fault)
3 â â mA
1.6 2.8 4.4 V
â â 1.2 ms
7.4.5 Fault signal settling time
ts(fault)
â â 200 µs
Conditions
VIN = 0 V
VOUT = Vbb
IIS = 1 mA
VIN = 0 V
VOUT = Vbb
VIN = 5 V to 0 V
VOUT = Vbb
VIN = 0 V
VOUT = 0 V to
> VOUT(OL)
IIS = 1 mA
Data Sheet
21
Rev.1.1, 2007-09-01
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