BTS5020-1EKA Infineon Technologies, BTS5020-1EKA Datasheet - Page 29

• 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

7.3
Figure 21
pull-down resistor
in the sense circuitry. A typical value is 1.2 kΩ. The blue curve represents the ideal SENSE, assuming an ideal
k
defined current.
Figure 21
7.3.1
In some applications a better accuracy is required around half the nominal current
requirement, a calibration on the application is possible. To avoid multiple calibration points at different load and
temperature conditions, the BTS5020-1EKA allows limited derating of the
+25 °C). This derating is described by the parameter Δ
assuming one calibration point at nominal load at +25 °C.
The blue line indicates the ideal
The green lines indicate the derating on the parameter across temperature and voltage, assuming one calibration
point at nominal temperature and nominal battery voltage.
The red lines indicate the
Data Sheet
PROFET™+ 12V
ILIS
factor value. The red curves show the accuracy the device provides across full temperature range, at a
and
3.5
2.5
1.5
0.5
SENSE Signal in the Nominal Current Range
Current Sense for Nominal Load
SENSE Signal Variation as a Function of Temperature and Load Current
4
3
2
1
0
0
Figure 22
k
ILIS1
R
IS
is connected to the IS pin. This resistor has to be higher than 560 Ω to limit the power losses
1
show the current sense as a function of the load current in the power DMOS. Usually, a
k
ILIS
k
ILIS2
accuracy without calibration.
2
k
ILIS
ratio.
3
k
ILIS3
4
k
29
ILIS
I
L
5
[A]
.
Figure 22
6
shows the behavior of the SENSE current,
k
ILIS4
7
k
ILIS
value, at a given point (
I
L(NOM)
8
. To achieve this accuracy
kilis BTS5020
Diagnostic Functions
Rev. 2.0, 2011-12-09
9
BTS5020-1EKA
10
I
IS
=
I
L3
K
ILIS ideal
;
I
L
T
J
=