BTS5020-1EKA Infineon Technologies, BTS5020-1EKA Datasheet - Page 23

• Manufacturer Part Number: BTS5020-1EKA
• Manufacturer: Infineon Technologies

Specifications of BTS5020-1EKA

• Packages: PG-DSO-14
• Channels: 1.0
• Ron @ Tj = 25°c: 20.0 mOhm
• Recommended Operating Voltage Min.: 5.0 V
• Recommended Operating Voltage Max.: 28.0 V
• Il(sc): 50.0 A

6.4
In case of reverse polarity, the intrinsic body diodes of the power DMOS causes power dissipation. The current in
this intrinsic body diode is limited by the load itself. Additionally, the current into the ground path and the logic pins
has to be limited to the maximum current described in
typical application.
and
limit the current in the sense transistor which behaves as a diode. The recommended value for
= 4.7 kΩ.
In case the overvoltage is not considered in the application,
resistor in parallel. Optionally a capacitor in parallel is recommended for EMC reasons.
During reverse polarity, no protection functions are available.
Figure 17
6.5
In case of overload, such as high inrush of cold lamp filament, or short circuit to ground, the BTS5020-1EKA offers
several protection mechanisms.
6.5.1
At first step, the instantaneous power in the switch is maintained at a safe value by limiting the current to the
maximum current allowed in the switch
the current flowing in the DMOS. The current limitation value is
the current limitation as a function of the drain to source voltage.
Data Sheet
PROFET™+ 12V
R
IN
are used to limit the current in the logic of the device and in the ESD protection stage.
protection diodes
Micro controller
Z
GND
Reverse Polarity Protection
Reverse Polarity Protection with External Components
Overload Protection
Current Limitation
can be either a 150 Ω resistor or Schottky diode with 1 kΩ resistor in parallel.
IN0
R
GND
resistor is used to limit the current in the Zener protection of the device. Resistors
R
R
R
SENSE
DEN
IN
R
IS
ZD
DEN
IN
IS
ESD
I
L(SC)
. During this time, the DMOS temperature is increasing, which affects
Z
IS(AZ)
Chapter 4.1
23
LOGIC
R
GND
GND
V
Z
GND
DS
can be replaced by a Schottky diode and 1kΩ
dependent.
with an external resistor.
Z
V
D(AZ)
S
Z
DS(AZ)
Figure 18
OUT
Reverse Polarity single.svg
Protection Functions
shows the behavior of
Rev. 2.0, 2011-12-09
V
DS(REV)
BTS5020-1EKA
R
Figure 17
DEN
R
SENSE
=
-V
R
IN
S(REV)
is used to
=
shows a
R
SENSE
R
DEN