TLI4970-D050T5_16 Datasheet, PDF (11/31 Pages) Infineon Technologies AG – Miniature coreless magnetic current sensor for AC and DC measurements

TLI4970-D050T5
2.4
Transfer Function
The transfer function is given by the formula shown in Figure 2-3.
Functional Description
I_out
[
A]
=
out[LSB_D ]− 4096[LSB_D
80[ ^LSBD ]
]
A
out[
LSB_D
]
=
I[
A]
⋅
80[
LSB_D
A
]
+
4096[LSB_D
]
Figure 2-3 Transfer function formula
The basic point are defined by the value 0_D (-51.200A) and 8191_D (51.1875A). Outside this current range, the
sensor status message will be sent instead of the sensor current message (see Figure 2-4).
8191
-2.0 -1.5 -1.0 -0.5
0
x I_PN
0.5 1.0 1.5 2.0
1 1111 1111 1111
7168
1 1100 0000 0000
6144
1 1000 0000 0000
5120
1 0100 0000 0000
4096
1 0000 0000 0000
3072
0 1100 0000 0000
2048
0 1000 0000 0000
1024
0 0100 0000 0000
0
-50 -40 -30 -20 -10 0
Sensor current message
Sensor status message
Figure 2-4 Transfer function
0 0000 0000 0000
10 20 30 40 50
Current [A]
Data Sheet
11
Rev. 1.1, 2016-06-17