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AN1596 Datasheet(PDF) 23 Page - STMicroelectronics

No. de pieza AN1596
Descripción Electrónicos  Today?셲 automotive market requires a continuous increasing
PDF  24 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1596 Datasheet(HTML) 23 Page - STMicroelectronics

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AN1596 - APPLICATION NOTE
8)
Load dump
D3 or
RGND
External
suppressor
Dld
used for load dump > 40V.
Alternative
resistor
RGND
can be added to the ground
pin to limit the current in the
control
part
in
case
it
exceeds
the
signal
path
breakdown voltage
9)
Inductive
loads: VCC
disconnection
D7
VCC disconnection occurs
each time the ignition key is
turned off and if the load is
highly inductive. If current is
too high, the device could be
destroyed. In some extreme
cases, a 40V MOV (D7) is
necessary.
10)
Inductive
loads: GND
pin pulled
negative
during
switching off
RGND
RGND is necessary during
fast
demagnetization
because it pulls down to
zero the GND voltage. RGND
suggested value is 1k
Ω.
+
VCC
VCC
VOUT
R1
R2
Dld
R
SENSE
RGND
CS
INPUT
DRIVER
LOGIC
+
-
DRIVER
+
LOGIC
INPUT
STATUS
VCC
DGND
RGND
V
OUT
R1
R2
D7
+
-
INPUT
STATUS
VCC
DGND
RGND
V
OUT
R1
R2
DRIVER
+
LOGIC
+
-



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