bts5235l Infineon Technologies Corporation, bts5235l Datasheet - Page 17

• Manufacturer Part Number: bts5235l
• Description: Smart High-side Power Switch
• Manufacturer: Infineon Technologies Corporation

4.2.2
In case of reverse polarity, the intrinsic body diode causes power dissipation. Additional
power is dissipated by the integrated ground resistor. Use following formula for
estimation of total power dissipation
P
The reverse current through the intrinsic body diode has to be limited by the connected
load. The current through sense pins IS1 and IS2 has to be limited (please refer to
maximum ratings on
internally by
4.2.3
In addition to the output clamp for inductive loads as described in
a clamp mechanism for over voltage protection. Because of the integrated ground
resistor, over voltage protection does not require external components.
As shown in
transistor switches on and the voltage across logic part is clamped. As a result, the
internal ground potential rises to
at pin IN1, IN2 and SEN rises almost to that potential, depending on the impedance of
the connected circuitry.
Figure 12
4.2.4
In case of complete loss of the device ground connections, but connected load ground,
the BTS 5235L securely changes to or stays in off state.
Data Sheet
diss(rev)
=
Reverse Polarity Protection
Over Voltage Protection
Loss of Ground Protection
all channels
R
GND
Figure
Over Voltage Protection
¦
. The over-temperature protection is not active during reverse polarity.
(
V
IN
IS
SEN R
DS(rev)
12, in case of supply voltages greater than
Page
ZD
R
ESD
SEN
IN
⋅
8). The current through the ground pin (GND) is limited
I
L
)
V
+
bb
------------- -
R
internal ground
V
GND
-
bb
P
V
diss(rev)
logic
2
bb(AZ)
17
. Due to the ESD zener diodes, the potential
in reverse polarity mode.
ZD
R
GND
Smart High-Side Power Switch
AZ
GND
VBB
OUT
Protection Functions
Section
V
V
bb(AZ)
OUT
V1.0, 2005-12-19
4.1.3, there is
BTS 5235L
, the power
OverVoltage .emf
(3)