Basic configuration
Figure 14
Basic configuration mode
This mode is based on 5 visual items:
1.
Current Rail Transfer Factor: this is the transfer factor in [µT/A] associated with the sensing structure. The
value must be known from simulations or measured on the final system. Please refer to
for instructions on how to estimate the current rail transfer factor using the Current Sensor Programmer
software;
2.
Measurement range: decimal value. This is the measurement range code to program in the sensor
integrated EEPROM. Only the measurement ranges linked to sensitivity settings specified on product
datasheet [1] can be used in the final productive system (e.g.
S1
= 5;
S2
= 6;
S3
= 8;
S4
= 12;
S5
=
16;
S6
= 24). The measurement range codes corresponding to the sensitivity settings specified on the
product datasheet [1] are reported on the User manual [2]. Other measurement ranges are available for
programming for testing purposes;
3.
Full scale: this represents the nominal full scale in ampere that is resulting from the choice of the current
rail transfer factor and measurement range values;
4.
Nominal Sensitivity: this represents the nominal sensitivity in [mV/A] that is resulting from the choice
of the current rail transfer factor and measurement range values. This is the value to be used as target
sensitivity for calibration;
5.
Basic Config button: this is a shortcut for the Basic Configuration window, described in
.
For further information about target sensitivity for calibration and calibration procedures please refer to the
User manual [2].
4.2.4.3
Double Code Word Calibration
Before starting sensor calibration, it is recommended to always store the original internal EEPROM of each
sensor using the functionality explained in
. If the calibration needs to be repeated, the user
should restore the original EEPROM content of the sensor before starting the new calibration procedure.
The Double Code Word method is used to calibrate the sensors to the target sensitivity and target offset (zero
offset). The complete algorithm is explained in the User manual [2] in the Calibration section. The programmer
GUI software implements and automatizes the calibration based on the Double Code Word algorithm.
TLE4972 Current sensor programmer
User guide
4 System and functional description
User guide
19
Rev. 1.00
2022-04-05
