BTS 5120-2EKA Infineon Technologies, BTS 5120-2EKA Datasheet - Page 29

• Manufacturer Part Number: BTS 5120-2EKA
• Manufacturer: Infineon Technologies

Specifications of BTS 5120-2EKA

• Packages: PG-DSO-14
• Channels: 2.0
• Ron @ Tj = 25°c: 120.0 mOhm
• Recommended Operating Voltage Min.: 5.0 V
• Recommended Operating Voltage Max.: 28.0 V
• Il(sc): 9.0 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 BTS5120-2EKA allows limited derating of the
T
current, 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
J
= +25 °C). This derating is described by the parameter Δ
factor value. The red curves show the accuracy the device provides across full temperature range, at a
6,0
5,0
4,0
3,0
2,0
1,0
0,0
0,0
and
SENSE Signal in the Nominal Current Range
Current Sense for Nominal Load
SENSE Signal Variation as a Function of Temperature and Load Current
K
Figure 22
ilis1
R
IS
K
is connected to the IS pin. This resistor has to be higher than 560 Ω to limit the power losses
0,5
ilis2
show the current sense as a function of the load current in the power DMOS. Usually, a
k
ILIS
accuracy without calibration.
k
ILIS
K
1,0
ilis3
ratio.
I
L
1,5
[A]
29
k
ILIS
k
2,0
.
ilis4
Figure 22
k
ILIS
kilis BTS5120
shows the behavior of the SENSE
value, at nominal load current (
2,5
I
L(NOM)
. To achieve this accuracy
Diagnostic Functions
Rev. 2.1, 2011-09-01
BTS5120-2EKA
3,0
I
IS
=
K
ILIS ideal
I
L
I
L3
;