Infineon TLE4972 User manual

TLE4972 Current sensor programmer
User guide
About this document
This document describes feature set, hardware and soware layers of the Infineon Current Sensor Programmer.
Scope and purpose
The purpose of this document is to guide the user in the programming, calibration and general evaluation of
compatible TLE4972 sensing boards using the Infineon Current Sensor Programmer.
Intended audience
This document is written for TLE4972 users who are dealing with the implementation of the product in the
system.
Evaluation Board
Infineon’s magnetic current sensor evaluation kit consists of the Current Sensor Programmer board, USB
cable and evaluation board connection cable. The programmer GUI along with Current Sensor Programmer
board can be used to evaluate, program and calibrate Infineon’s set of evaluation boards or a customized PCB
setup. The programmer board is to be used by the customer solely for the purpose of evaluation and testing. It
is not a commercialized product and shall not be used for series production. The programmer board is thus not
intended to meet any industrial specifications and the recommended operating ambient temperature is 80°C.
The following key aspects are discussed in this document:
• Programmer board and evaluation board order information;
• Programmer board and GUI description;
• Programmer board ELV and SELV isolation scheme;
• GUI installation procedure;
• Typical application setup with and without Infineon evaluation boards;
• GUI operation with and without Infineon evaluation boards;
• Easy programming of current sensor parameters such as operating mode, sensitivity, overcurrent threshold
and deglitch filtering time;
• Internal signals readout (e.g. internal temperature);
• Crosstalk compensation procedure;
• Calibration procedure.
Table 1 Programmer and evaluation boards ordering codes
Device name SP number Device information
CUR SENSOR PROGRAMMER SP004441438 Current Sensor Programmer for
TLE4972
TLE4972 EVAL STD PCB SP005632136 TLE4972 TDSO, multi-layer FR4
board, 45° S-bend
TLE4972 EVAL INLAY SP005632138 TLE4972 TDSO, FR4 board with
copper inlay, 45° S-bend
(table continues...)
User guide Please read the sections "Important notice" and "Warnings" at the end of this document Rev. 1.00
www.infineon.com 2022-04-05

Table 1 (continued) Programmer and evaluation boards ordering codes
Device name SP number Device information
TLE4972 EVAL VER BAR SP005632142 TLE4972 VSON, Busbar, Vertical
insertion
TLE4972 EVAL LAT BAR SP005632140 TLE4972 VSON, Busbar, 45° S-bend
Figure 1 TLE4972 Current Sensor Programmer
The Current Sensor Programmer board connection with a 3-phase TLE4972 evaluation board is shown in the
figure below. The communication between the current sensor and programmer board is done through an
interface cable.
Interface Cable
Figure 2 TLE4972 evaluation board (Green) connected to Current Sensor Programmer board
(Red)
TLE4972 Current sensor programmer
User guide
User guide 2 Rev. 1.00
2022-04-05

Table of contents
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 The board at a glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1 Delivery content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.1 Soware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1.1.1 Soware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1.2 Hardware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 System and functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.1 Initial setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.1.2 Initial setup with generic DUT board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.1.3 Sensor not recognized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Description of the functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2.1 DUT board connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.2 Measurement header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.3 Optional external power supply connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.2.4 Mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2.4.1 Continuous readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.4.2 Basic configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2.4.3 Double Code Word Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.2.5 Options drop down menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.5.1 EXT EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.2.5.2 Temperature Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.5.3 Register Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.2.5.4 EXIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2.6 Memory drop down menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.6.1 Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.6.2 EEPROM Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.6.3 Calibration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.7 Tools drop down menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.7.1 OCD Calculation Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.7.2 Current Rail Transfer Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.7.3 Calibrate Toolbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 References and appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1 GUI soware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
TLE4972 Current sensor programmer
User guide
Table of contents
User guide 3 Rev. 1.00
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5.2 FTDI drivers installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3 Abbreviations and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
TLE4972 Current sensor programmer
User guide
Table of contents
User guide 4 Rev. 1.00
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1 Important notice
“Evaluation Boards and Reference Boards” shall mean products embedded on a printed circuit board
(PCB) for demonstration and/or evaluation purposes, which include, without limitation, demonstration,
reference and evaluation boards, kits and design (collectively referred to as “Reference Board”).
Environmental conditions have been considered in the design of the Evaluation Boards and Reference
Boards provided by Infineon Technologies. The design of the Evaluation Boards and Reference Boards has
been tested by Infineon Technologies only as described in this document. The design is not qualified in
terms of safety requirements, manufacturing and operation over the entire operating temperature range
or lifetime.
The Evaluation Boards and Reference Boards provided by Infineon Technologies are subject to functional
testing only under typical load conditions. Evaluation Boards and Reference Boards are not subject to
the same procedures as regular products regarding returned material analysis (RMA), process change
notification (PCN) and product discontinuation (PD).
Evaluation Boards and Reference Boards are not commercialized products, and are solely intended for
evaluation and testing purposes. In particular, they shall not be used for reliability testing or production.
The Evaluation Boards and Reference Boards may therefore not comply with CE or similar standards
(including but not limited to the EMC Directive 2004/EC/108 and the EMC Act) and may not fulfill other
requirements of the country in which they are operated by the customer. The customer shall ensure that
all Evaluation Boards and Reference Boards will be handled in a way which is compliant with the relevant
requirements and standards of the country in which they are operated.
The Evaluation Boards and Reference Boards as well as the information provided in this document
are addressed only to qualified and skilled technical sta, for laboratory usage, and shall be used
and managed according to the terms and conditions set forth in this document and in other related
documentation supplied with the respective Evaluation Board or Reference Board.
It is the responsibility of the customer’s technical departments to evaluate the suitability of the
Evaluation Boards and Reference Boards for the intended application, and to evaluate the completeness
and correctness of the information provided in this document with respect to such application.
The customer is obliged to ensure that the use of the Evaluation Boards and Reference Boards does not
cause any harm to persons or third party property. The Evaluation Boards and Reference Boards and any
information in this document is provided "as is" and Infineon Technologies disclaims any warranties,
express or implied, including but not limited to warranties of non-infringement of third party rights and
implied warranties of fitness for any purpose, or for merchantability.
Infineon Technologies shall not be responsible for any damages resulting from the use of the Evaluation
Boards and Reference Boards and/or from any information provided in this document. The customer is
obliged to defend, indemnify and hold Infineon Technologies harmless from and against any claims or
damages arising out of or resulting from any use thereof.
Infineon Technologies reserves the right to modify this document and/or any information provided
herein at any time without further notice.
TLE4972 Current sensor programmer
User guide
1 Important notice
User guide 5 Rev. 1.00
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2 Safety precautions
Note: Please note the following warnings regarding the hazards associated with development systems.
Figure 3 Safety Precautions
•Warning: Remove or disconnect power from the drive before you disconnect or reconnect wires, or
perform maintenance work. Failure to do so may result in personal injury or death.
•Warning: Do not keep the programmer connected to the laptop while the board is in use in an inverter. The
laptop may be damaged during the operation of the system.
•Caution: Only personnel familiar with the drive, power electronics and associated machinery should plan,
install, commission and subsequently service the system. Failure to comply may result in personal injury
and/or equipment damage.
•Caution: The programmer board contains parts and assemblies sensitive to electrostatic discharge (ESD).
Electrostatic control precautions are required when installing, testing, servicing or repairing the assembly.
Component damage may result if ESD control procedures are not followed. If you are not familiar with
electrostatic control procedures, refer to the applicable ESD protection handbooks and guidelines.
•Caution: A drive that is incorrectly applied or installed can lead to component damage or reduction in
product lifetime. Wiring or application errors such as undersizing the motor, supplying an incorrect or
inadequate AC supply, or excessive ambient temperatures may result in system malfunction.
•Caution: The programmer board is shipped with packing materials that need to be removed prior to
installation. Failure to remove all packing materials that are unnecessary for system installation may result
in overheating or abnormal operating conditions.
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3 The board at a glance
3.1 Delivery content
3.1.1 Soware overview
The required soware can be acquired from the respective Infineon sales person. The soware package
contains:
• A Graphical User Interface (GUI);
• FTD chipset USB driver, which is necessary to establish the USB connection. It enables USB 2.0 and USB 3.0
protocol capabilities.
The soware can be used in combination with Windows 7 and Windows 10 operating systems. It is compatible
with both 32-bit and 64-bit systems. Other operating systems may work, but have not been tested.
3.1.1.1 Soware installation
The following description guides through the GUI soware installation step by step:
1. Download the required GUI soware;
2. Extract the GUI soware to a local folder;
3. To start the installation double click on the "Current Sensor Evalkit Vx.x.x.exe" with le mouse button.
For detailed steps please refer to Chapter 5.
3.1.2 Hardware overview
The Current Sensor Programmer board order contains the following hardware items:
• The programmer board, fully assembled;
• Micro USB cable, used to enable communication with GUI and to power up the programmer board and
sensors on the evaluation board or external PCB;
• Interface cable. It enables the connection and communication between programmer board and evaluation
board.
3.2 Main features
The Current Sensor Programmer board, shown in the figure below, together with the GUI soware constitute a
ready-to-use evaluation setup which provides the following main features:
• Oscilloscope-like functionality;
• Crosstalk matrix cancellation in real time;
• Sensor calibration and programming.
The main hardware features of the Current Sensor Programmer board are:
• XMC4700 microcontroller based on ARM Cortex™-M4 with 144 MHz frequency used for the debugging and
USB communication;
• Micro USB connector for power supply and communication with the GUI;
• External power supply for standalone operation (without USB connection);
• LED for indication of power supply and status indication;
• Circuit for the generation of the sensor EEPROM programming voltage (20.6 V);
• DUT board connector for the connection with DUT boards (e.g. Infineon's evaluation boards);
• Measurement header for measurement instrumentation connection;
• Reinforced galvanic isolation on USB connection and external power supply.
TLE4972 Current sensor programmer
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3 The board at a glance
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Figure 4 Current Sensor Programmer board features
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3.3 Block diagram
The figure below shows the block diagram of the programmer board. To provide the required safety
isolation level, the controller and interface circuits are isolated. The Micro-USB connector is isolated from
the microcontroller through the reinforced insulation of the DC-DC converter. The control circuits are designed
to meet the ELV safety standards and the interfacing devices are designed to meet the SELV safety standards.
Therefore, regardless of the isolation scheme used on the DUT Board, a safe isolation barrier is provided by the
programmer. Nevertheless, under all circumstances proper care must be taken while working with high voltage
applications.
Figure 5 Current Sensor Programmer board architecture
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3 The board at a glance
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4 System and functional description
4.1 Commissioning
4.1.1 Initial setup
The figure below shows an example about how to connect the TLE4972 evaluation boards with the programmer
board via USB connector to a PC or laptop in case of general purpose drive application. Here, the green color
board shown in the figure below could be either of the following boards:
• Infineon's evaluation board;
• An user designed generic DUT board.
Interface
cable
Programmer board
DUT board
Load
Software GUI
Figure 6 Test setup of TLE4972 DUT board with programmer board
Once the test set up is done, the user has to to connect the programmer board through USB connection
and open the GUI soware in order to start the communication with the hardware. If the USB connection is
successful, the LED D1 on the programmer board will light. If the programmer board is correctly recognized
by the GUI, it will appear as "Current Toolbox" in the devices list, as shown in the figure below. Click on the
connection button to start the communication.
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Figure 7 Connection with programmer board
If an Infineon evaluation board is connected as DUT board, the "Continuous readout" window will appear
(Chapter 4.2.4.1) and the led D2 on the programmer board will start blinking. The soware GUI will
automatically configure itself using configuration data stored on the Infineon evaluation board external
EEPROM.
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4.1.2 Initial setup with generic DUT board
As discussed in the previous section, the GUI soware and the programmer board support customized DUT
boards. The pinout for the DUT board connector is shown in Chapter 4.2.1. The following window will pop-
up if the user did not connect an Infineon evaluation board but a custom DUT board, without a properly
programmed external EEPROM on it. The user has to enter the expected sensitivity in [mV/A] and confirm it by
selecting the "Set" button; the tool uses the value entered here to convert the [V] reading into [A] reading in the
continuous readout mode.
Figure 8 Connection with generic DUT board
Aer clicking on "Set", the "Continuous readout" window will appear (Chapter 4.2.4.1) and the led D2 on
the programmer board will start blinking. Since there is no external EEPROM on the generic DUT board, the
soware GUI cannot configure itself. The user has to select the sensor family from the pane on the le, as
shown in the figure below.
Figure 9 Sensor family setting
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4.1.3 Sensor not recognized
If the "Not supported" indication appears in the "Design Step" text box, the sensors on the DUT board have
not been recognized. This might be due to malfunctioning sensors, or to interface problems such as soldering
issues, bad cabling or wrong connection scheme.
Figure 10 Design step not supported error
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4.2 Description of the functional blocks
4.2.1 DUT board connector
The DUT board connector is used to establish the connection between the programmer and the DUT board. The
figure and table below show the DUT board connector pinout.
19 20
17 18
15 16
13 14
11 12
9 10
7 8
5 6
3 4
1 2
AOUT1
VREF1
AOUT2
VREF2
AOUT3
VREF3
OCD1_1
OCD2_1
OCD1_2
OCD2_2
OCD1_3
OCD2_3
VSENS
V5
Reserved
GND
Sensor 1
Sensor 2
Sensor 3
23 24
21 22 GND
V33
Reserved
Reserved
Reserved
SCL
SDA
-
Figure 11 DUT board connector pinout
Table 2 DUT board connector pinout
Pin Number Pin name Pin function
1 AOUT1 Analog output voltage of sensor 1
2 OCD1_1 Over Current Detection channel 1 of
sensor 1 (open drain)
3 VREF1 Reference voltage of sensor 1
4 OCD2_1 Over Current Detection channel 2 of
sensor 1 (open drain)
5 AOUT2 Analog output voltage of sensor 2
6 OCD1_2 Over Current Detection channel 1 of
sensor 2 (open drain)
7 VREF2 Reference voltage of sensor 2
8 OCD2_2 Over Current Detection channel 2 of
sensor 2 (open drain)
9 AOUT3 Analog output voltage of sensor 3
(table continues...)
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Table 2 (continued) DUT board connector pinout
10 OCD1_3 Over Current Detection channel 1 of
sensor 3 (open drain)
11 VREF3 Reference voltage of sensor 3
12 OCD2_3 Over Current Detection channel 2 of
sensor 3 (open drain)
13 Reserved Additional ADC input, connected
to µC XMC4700 P14_7 on the
programmer board
14 VSENS Sensor supply voltage, used for
sensor test mode activation
15 Reserved Additional ADC input, connected
to µC XMC4700 P14_9 on the
programmer board
16 V5 5 V supply voltage
17 Reserved External trigger input, connected
to µC XMC4700 P4_0 on the
programmer board
18 Reserved -
19 SCL Clock for communication with
external EEPROM on Infineon's
evaluation boards
20 GND Ground connection
21 SDA Data link for communication with
external EEPROM on Infineon's
evaluation boards
22 GND Ground connection
23 - -
24 V33 3.3 V supply
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4.2.2 Measurement header
The figure and table below show the pinout of the measurement header. It can be used to connect
measurement instrumentation directly to the programmer board.
19 20
17 18
15 16
13 14
11 12
9 10
7 8
5 6
3 4
1 2AOUT1
VREF1
AOUT2
VREF2
AOUT3
VREF3
Reserved
Reserved
Reserved
V33
OCD1_1
OCD2_1
OCD1_2
OCD2_2
OCD1_3
OCD2_3
VSENS
V5
Reserved
GND
Sensor 1
Sensor 2
Sensor 3
Figure 12 Measurement header pinout
Table 3 Measurement header pinout
Pin Number Pin name Pin function
1 AOUT1 Analog output voltage of sensor 1
2 OCD1_1 Over Current Detection channel 1 of
sensor 1 (open drain)
3 VREF1 Reference voltage of sensor 1
4 OCD2_1 Over Current Detection channel 2 of
sensor 1 (open drain)
5 AOUT2 Analog output voltage of sensor 2
6 OCD1_2 Over Current Detection channel 1 of
sensor 2 (open drain)
7 VREF2 Reference voltage of sensor 2
8 OCD2_2 Over Current Detection channel 2 of
sensor 2 (open drain)
(table continues...)
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Table 3 (continued) Measurement header pinout
9 AOUT3 Analog output voltage of sensor 3
10 OCD1_3 Over Current Detection channel 1 of
sensor 3 (open drain)
11 VREF3 Reference voltage of sensor 3
12 OCD2_3 Over Current Detection channel 2 of
sensor 3 (open drain)
13 Reserved Additional ADC input, connected
to µC XMC4700 P14_7 on the
programmer board
14 VSENS Sensor supply voltage, used for
sensor test mode activation
15 Reserved Additional ADC input, connected
to µC XMC4700 P14_9 on the
programmer board
16 V5 5 V supply voltage
17 Reserved External trigger input, connected
to µC XMC4700 P4_0 on the
programmer board
18 Reserved -
19 V33 3.3 V supply
20 GND Ground connection
4.2.3 Optional external power supply connection
The programmer board typically draws about 350 mA when connected to the TLE4972 evaluation boards. This
current can be delivered via the USB port of a PC, which is usually specified to deliver up to 500 mA. A reverse
current protection diode ensures safe operation and protects the USB port of the Laptop/PC in case power is
provided through the measurement header at the same time.
In Chapter 3.2 it is shown an optional power supply plug to provide a connection to an external power supply in
case the USB connection can't support the power requirement of the programmer board.
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4.2.4 Mode selection
4.2.4.1 Continuous readout
The figure below shows the GUI soware appearance when the programmer board is successfully connected to
the DUT board. The Continuous readout mode is selected by default.
Sensor 2 Data Table
Sensor Info
Sensor 1
Sensor 3
Figure 13 Continuous readout mode
The window contains the following visual elements:
1. Sensor info pane on the top le side: it displays the sensor type, the sensor family name and the sensor
design step;
2. Phase current and over current detection info in the middle pane: the Y axis shows the current in
ampere and the X axis shows the acquired samples with a sampling rate of 10 k sample per second.
Additionally, the over current detection signals OCD1 (orange color plot) and OCD2 (red color plot) are
also shown. The right side Y axis of each plot shows the status "1" for normal operation and "0" when
OCD is triggered;
3. Data table pane on the top right side: it displays all parameters measured for sensor 1 to sensor 3 at the
last sampling event;
4. Mode selection drop down menu on the top right side: to start a new mode click the "Stop" button
shown on the bottom right corner of the window and select a new mode from the "Mode Selection" drop
down menu which is on the top right corner;
5. Crosstalk matrix compensation check box: it can be enabled or disabled to compensate the external
field eects on the sensor. The crosstalk matrix has to be characterized by the user and stored in the
External EEPROM in the DUT board. A detailed explanation is provided in Chapter 4.2.5.1;
6. Log data option at the bottom right corner of the window: it can be used to save the measured data.
4.2.4.2 Basic configuration
The basic configuration mode helps the user in the configuration of the sensor for the target system. It is useful
when a custom DUT board is connected, for which the correct sensor settings are not known yet.
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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 Chapter 4.2.7.2
for instructions on how to estimate the current rail transfer factor using the Current Sensor Programmer
soware;
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 Chapter 4.2.6.1.
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 Chapter 4.2.6.2. 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 oset (zero
oset). The complete algorithm is explained in the User manual [2] in the Calibration section. The programmer
GUI soware implements and automatizes the calibration based on the Double Code Word algorithm.
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Double Code Word
Calibration
Step by step
instructions
Figure 15 Double Code Word Calibration mode
This mode is based on 8 visual items:
1. Select sensor: this dropdown menu has to be used to select which sensor has to be calibrated;
2. Target sensitivity: the target sensitivity is the sensitivity to be used as a target for the calibration. All
error components (within the sensor calibration range, reported on the product datasheet [1]) are
compensated in order to reach the target sensitivity, and the sensor calibration parameters are stored
at the end of the calibration process in the sensor internal EEPROM. The target sensitivity has to match
the nominal one; in this way, the entire calibration range is used to compensate error components rather
than fine-trimming the sensitivity to the desired one. The target sensitivity has to be entered doubled in
case of fully-dierential output mode, due to the doubled output voltage swing. For further information
about target sensitivity for calibration and calibration procedures please refer to the User manual [2];
3. Itest: the user has to enter in this field the test current used during calibration. Measure the test
current using a calibrated current source, a shunt combined with a multimeter or any other precise
current measurement device;
4. Vout@Itest button: this button has to be pressed as part of the calibration procedure, explained
above. By pressing this button, the soware executes the Double Code Word algorithm part related
to sensitivity calibration;
5. Oset Voltage button: this button has to be pressed as part of the calibration procedure, explained
above. By pressing this button, the soware executes the Double Code Word algorithm part related to
oset calibration;
6. Manual data input checkbox: can be used to execute voltage readings during calibration using external
measurement instrumentation, instead of the onboard ADC of the Current Sensor Programmer. Typically
not needed;
7. Step by step instructions text box: it provides step by step instructions during calibration;
8. Burn EEPROM button: it programs eectively the new calibration parameters in the sensor internal
EEPROM.
The guided calibration procedure consist in the following steps:
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