Renesas ISL28022EVKIT1Z User manual

USER’S MANUAL
AN1875
Rev 3.00
February 17, 2016
ISL28022EVKIT1Z
ISL28022 Digital Power Monitor Evaluation Kit
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Introduction
The ISL28022 Digital Power Monitor (DPM) evaluation kit is a
three evaluation board design that demonstrates the
functionality of the ISL28022. By design, the ISL28022 is
considered a digital helper for a variety of applications ranging
from energy optimization to diagnostics of complex systems.
The three board evaluation kit demonstrates the functionality
of the DPM for three specific applications while offering a
configurable board for users to connect to their systems.
The DPM Evaluation kit is accompanied by a graphical user
interface (GUI) that allows the user to configure the ISL28022
for monitoring bus voltage and current in a specific
application. The GUI has a data save feature allowing the
transfer of measurement data to another software application
for analysis.
Dongle Evaluation Board (ISL28022USBEV1Z)
The ISL28022 DPM evaluation kit consists of three boards; a
dongle, a generic ISL28022 board, and a RLOAD board. The
dongle board mates from a PC to the ISL28022 via a
microcontroller. The microcontroller converts USB commands
sourced from the PC to an I2C header. The I2C pins (SCL and SDA)
are connected to the right angle header at the edge of the board.
The dongle board has three circuits that convert the USB supply
voltage from 5V to 3.3V, 12V and a selectable point of load (POL)
voltage. Each voltage translation circuit has a ISL28022
connected to monitor the current sourced by the supply. Each
circuit has been optimized to measure 100mA at full scale. The
three supply voltages are routed to the right angle connector
along with the I2C pins, SDA and SCL.
RLOAD Board (ISL28022DBEV1Z)
The 2nd DPM evaluation kit board is the RLOAD board. The
purpose of the RLOAD board is to exercise the three supplies
sourced by the dongle board. The RLOAD board also allows the
user to source power to a user defined system via a jumper
selection. The RLOAD board has a programmable load resistor.
The programmable load resistor is a ISL23345 digitally
controlled potentiometer (DCP). The evaluation software
allows the user to configure the DCP for monitoring power. The
RLOAD board connects to the dongle board to demonstrate the
functionality of the ISL28022.
ISL28022 Generic Board (ISL28022MBEV1Z)
The final ISL28022 board is a non-configured ISL28022 that
connects the analog inputs to the outside world. The board
allows a user to build a system that requires either current or
power monitoring around the ISL28022. The analog inputs
(VINP, VINM and VBUS) of the ISL28022 accept input voltages
ranging from 0V to 60V. The ISL28022 allows the user to
uniquely configure the slave address via jumper selections.
The ISL28022 can be powered from a user defined source or
the 3.3V supply generated from the USB voltage. The
acceptable power supply voltage range for the ISL28022 is
from 3V to 5.5V. The external clock/interrupt pin is routed to
the outside world via a jumper selection. The maximum
measurable input differential ±(VINP - VINM) is ±300mV. The
differential voltage between the VINP and VINM pins can
withstand a magnitude of 60V. The differential supply
tolerance allows for the debug of catastrophic circuit events.
FIGURE 1. ISL28022 EVALUATION KIT EVALUATION BOARDS
ISL28022 EVALUATION BOARD
RLOAD BOARD
DONGLE BOARD

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Evaluation Package (Online
Order)
The ISL28022 Evaluation Kit (ISL28022EVKIT1Z) contains the
following items:
• Dongle Board (SI_Labs_Dongle_Board) - ISL28022USBEV1Z
• Generic ISL28022 Board (ISL28022_GEN_SINGLESITE_BRD) -
ISL28022MBEV1Z
•R
LOAD Board (ISL28022_RLOAD_BRD) - ISL28022DBEV1Z
• Evaluation Software (Online)
•UserGuide
• ISL28022 Data sheet
Documentation for the individual device can be found in the
following link:
http://www.intersil.com/products/ISL28022
System Requirements
- Windows 98/NT/2000/XP/VISTA/WIN7
- Available USB Port
Software Installation
Download the latest Evaluation Board GUI (Graphical User
Interface) from the following link:
http://www.intersil.com/products/ISL28022
Installing the Software
From the link supplied in the previous section, download and run
the executable file to start installing the GUI. The user will be
greeted by the screen shown in Figure 2. Continue through the
installer and read the instructions. The PC and PCB should not be
connected via the USB port until after the installation has
completed.
.
Hardware Setup
- Connect the USB 2.0 cable to the PC first, and then to the
Evaluation Board
- The computer may ask about installing software for new
found hardware; select “Yes, this time only”
- On the following screen, it will ask about how to install
hardware. Select the recommended option (Installing from
CD) and follow the directions
- The USB is the only connector needed
Running the ISL28022 Evaluation
Kit Software
- To run the program, go to the “Start” menu and choose the
ISL28022 Evaluation Kit folder, then choose the ISL28022
Evaluation Kit icon. Once clicked, the demo software
window should appear as illustrated in Figure 3.
- If a generic ISL28022 board is connected to the dongle
board, the front panel of ISL28022 software will be enabled
while the Demo drop down menu will be disabled,
see Figure 4.
FIGURE 2. INSTALLATION WELCOME SCREEN

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.
FIGURE 3. ISL28022 EVALUATION KIT SOFTWARE WINDOW
FIGURE 4. ISL28022 DEMONSTRATION SOFTWARE CONFIGURATION
RLOAD BOARD
DONGLE BOARD

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Demonstration Software
• Connect the RLOAD board to the dongle as shown in Figure 4.
Enable communication between the evaluation board and the
computer by pressing the “Connect to Device” button at the
bottom right of the software window. If the connection is
successful, the text on the button will be changed to
“Disconnect Device”. Otherwise, the button text will not
change. Upon successful connection between the PC and the
dongle board, the evaluation software searches specific
resistors to determine the type of board that is connected to
the dongle. The board that is connected determines the
behavior of the software. Connecting the RLOAD board to the
dongle disables the front features of the ISL28022 GUI. All
menus are disabled except the Demo and Dongle drop down
menus.
FIGURE 5. (A) TOP: ISL28022 USB SUPPLY MONITORING WINDOW. (B) BOTTOM: RLOAD BOARD SOFTWARE WINDOW. THE WINDOW CONTROLS
THE DIGITALLY CONTROLLED RESISTORS

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• Mouse to the Demo drop down menu and select the RLOAD
selection. Two windows will appear. A USB supply monitor
window and a RLOAD window. The two windows are shown in
Figure 5. The USB supply monitor reports the current, voltage
and power of the supplies sourced from the USB Dongle by
pressing the “Meas Once” button. The USB Supply Monitor
window allows the user to select the point of load (POL)
voltage sourced by the dongle via a combo box. The POL
voltage ranges from 2.5V to 0.8V. The AUX POL selection
allows a user to generate a unique voltage that is not offered
by the pre-configured ranges. The Aux voltage is configured by
soldering a resistor to R7 of the Dongle board. Use Equation 1
to configure the Aux voltage.
• The 12V and POL supplies can be disabled by unchecking the
supply voltage next to the desired supply. Disabling the supply
will shut down the ISL28022 and the regulator. Unchecking
the 3.3V supply will only shutdown the ISL28022 for the 3.3V
supply. The 3.3V supply remains on to power critical circuitry.
•TheR
LOAD board connects a load to the USB generated
supplies sourced by the dongle board. A jumper selects the
source of the load. Shorting pins 1 and 2 of each supply routes
the load to the digitally controlled potentiometer (DCP). The
DCP is controlled through an I2C interface. RLOAD window
controls the DCP’s value for each supply. Enter a value within
the resistance range (Figure 5(B)), for the respective supply
DCP and press the “Apply” button. The value will be set
accordingly to the nearest value. In the USB supply monitor
window (Figure 5(A)), press the “Meas Once” button and the
measured current will change accordingly for the resistance
values that were changed.
•TheR
LOAD board can be configured to route the USB supply
voltages to a terminal connector. This allows a user to source
voltage from a USB supply to an external circuit while
monitoring voltage, current and power levels on the supply.
The terminal connection path is enabled by shorting pins 2 and
3 for the desired USB supply.
• Connect the ISL28022 board to the dongle as shown in
Figure 6. Enable communication between the evaluation
board and the computer by pressing the “Connect to Device”
button at the bottom right of the software window. If the
connection is successful, the text on the button will be red and
read “Disconnect Device” otherwise, the button text will not
change. Upon successful connection between the PC and the
dongle board, the evaluation software searches specific
resistors to determine the board that is connected to dongle.
• Prior to connecting to the device, a slave address should be
configured to one of 13 available slave addresses on the
Generic ISL28022 Board. Three slave addresses (0x9E, 0x9C
and 0x9A) are reserved to monitor the USB supplies of the
dongle board. The slave address is configured by jumpering
the address pins A0 and A1 to a level. There are four levels
(VCC, GND, SDA and SCL) per pin. The translation between the
jumpered pin value and slave address is defined in the
ISL28022 datasheet.
• Successful connection between the PC and ISL28022
evaluation board will enable the front panel of the Evaluation
Kit GUI while disabling the Demo drop down options.
DATA COLLECTING
• To start collecting data, press the “Start Data Collecting”
button located to the left of the “Connect to Device” button at
the bottom of the screen. Once pressed, the color of the text
and verbiage of the button will change to “Stop Data
Collecting”. The default state of the software reads each DPM
for shunt and bus voltages. To change the read settings of the
DPM, toggle the check box label next to each numerical
readout. The backlight of the display will toggle between
yellow and gray. A backlight of yellow means a channel is
enabled. A change in the functionality of the DPM will change
the mode value for the respective channel. The mode of each
DPM is displayed in the lower left hand corner of each
channel’s display. Figure 6 represents a zoomed in view of a
single DPM interface.
(EQ. 1)
AuxV0.5 1 26100
R7
----------------
+


=
FIGURE 6. DONGLE UNCONNECTED TO THE ISL28022 BOARD

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LOOP DELAY (S)
• Timing between successive measurements can be fast
causing the LCD readout to be illegible. The Loop Delay (S)
input field allows the user to input a delay between
measurements.
DPM MEASUREMENT FUNCTIONALITY
• Enabling the current functional block on the DPM interface
requires the user to enter a shunt resistor value. The entered
value is stored in the DPM calibration register and is used to
calculate the current or power depending on the enabled
check box. Figure 7 illustrates the dialog box that request the
shunt resistor value when current functionality is enabled.
ADC RANGE AND TIMING CONTROLS
• The BRNG (Bus Voltage Range) and PGA (Shunt Voltage
Range) combo boxes control the full-scale measurement range
setting of the DPM. The BRNG range spans from 60V to 16V.
The PGA has full-scale ranges from ±300mV to ±40mV.
• The SADC (Shunt acquisition time) and BADC (Bus acquisition
time) change the speed at which the DPM measures either the
bus or shunt channels. Faster acquisition times reduces the
resolution of the measurement. ADC acquisition times equal
to 508µs and greater have 15 bits of resolution while 72µs of
acquisition time represents 12 bits of resolution.
THRESHOLD AND AUXILIARY CONTROLS
• Choose the Threshold selection under the ISL28022 drop
down menu that invokes the Auxiliary Control dialog box. The
dialog box allows the user to configure the threshold detectors
of the DPM chip as well as route the alert status to the
interrupt pin. Figure 8 shows the Auxiliary Controls Dialog Box.
• The Vbus thresholds can be set between 0V and 60V. Vshunt
thresholds range between ±300mV. The Vbus and Vshunt
thresholds do not scale versus BRNG and PGA settings. Once
an input is set and the measured signal violates a threshold
level, the backlight of the measured signal will turn from
yellow to orange for a measured value above the upper
threshold. Measured signals below the lower threshold results
in a backlight changing from yellow to blue.
RESET THE DEVICE
• Choosing the Reset selection under the ISL28022 drop down
menu will soft reset the ISL28022 and restore the device to
the default value. A soft reset will perform an auto calibration
on the device.
EXTERNAL CLOCK ENABLE
• The ISL28022 can be synchronized to an external clock to
reduce measurement noise in a system. To configure and
enable the external clock feature choose the EXTCLK/INT
selection in the ISL28022 drop down menu. A dialog box,
illustrated in Figure 9, will appear allowing the user to enable
the external clock feature. The input bandwidth of the external
clock pin is roughly 4MHz. The external clock frequency can be
divided to match the internal system clock frequency of
500kHz. Choosing a clock division that results in internal clock
frequency close to 500kHz will guarantee ADC acquisition
times similar to the default times.
SINGLE MEASUREMENT CONTROL
• Pressing the “Meas Once” button on the main panel measures
the individual channel once that is associated with the “Meas
Once” button.
SAVING DATA
• The DPM software allows the user to store a set number of
points of data. Go to the menu bar of the ISL28022 DPM
Demo Software window and choose File --> Save Data.
Choosing the Save Data option will open a dialog box asking
for the filename and directory of the save path. Figure 10 is an
illustration of the dialog box.
FIGURE 7. CURRENT SENSE DIALOG BOX
FIGURE 8. AUXILIARY CONTROL DIALOG BOX
FIGURE 9. EXTERNAL CLOCK DIALOG BOX

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The file name entered in the dialog box is the base name for all
files saved. A unique named file is generated for each measured
parameter (Vbus, Vshunt, Current, Power) across 8 channels. The
software only saves data to a file for each measured parameter
selected. If a measured parameter is not selected, then a file
with the non selected measured parameter is not generated. For
example, power and current files would not be generated for the
configuration of the DPM window shown in Figure 3 on page 3.
All saved files are tab delimited. The naming convention of the
file is <base name>_<measured parameter>_dataset. The base
name is the file name entered in the save dialog box. The
measured parameter names are vbus, vshunt, current and
power.
• Upon completion of the save dialog box, an input box
(Figure 11) asks for the number of points to be saved per
channel.
Pressing the “OK” button with a valid numerical entry will
begin data collection. The numerical values changes on the
main window while the data is being recorded. The completion
of data collection will commence when all of the active
measurement numbers cease to change.
• The settings of all channels should be finalized prior to
invoking the Save Data feature. The user has the option of
uniquely naming each channel and having the channel name
be passed to the column name of each respective data file.
Changing the field named “Channel Name” in Figure 4 on
page 3 will change the name of the column data.
USB SUPPLIES
- The ISL28022 Demo Software allows a user to build their
own board to mate with the Dongle board. The final design
of the third party board may use the dongle generated
power supplies. The user can monitor the current draw for
each of the Dongle supplies by selecting USB Supplies under
the Dongle drop down menu. The dialog box in Figure 12 will
appear once the USB Supplies are selected.
I2C TRANSACTION
• The ISL28022 Demo Software allows a user to build their own
board to mate with the Dongle board. The final design may
have an I2C Device incorporated into the design. The I2C
Transaction selection in the Dongle drop down menu allows
the user to send read and write commands to I2C devices.
Figure 13 is the dialog box that appears when the I2C
transaction is chosen.
CONNECTING MULTIPLE ISL28022 EVALUATION
BOARDS TO A DONGLE
• An ISL28022 design can have 16 devices connected on a
single I2C bus. The ISL28022 evaluation kit allows the user to
cascade up to 13 ISL28022 Evaluation Boards. The dongle
uses three slave addresses (0x9E, 0x9C, and 0x9A) for
measuring the current and voltage of the 3.3V, 12V and Pol_V
supplies. Figure 14 is a picture of the dongle board connected
to two ISL28022 evaluation boards.
• Connect the Dongle board to the computer via a USB cable.
Start the ISL28022 evaluation kit demo hardware.
• Connect the software to the Dongle by pressing the “Connect
to Device” button at the bottom right of the software window. If
the connection is successful, the text on the button will be red
and read “Disconnect Device”. All buttons on the front panel of
the GUI will be enabled. The GUI should look similar to
Figure 15. When the software connects to the microcontroller,
the software scans for all the acceptable ISL28022 slave
addresses to determine if the device is connected to the
dongle.
FIGURE 11. NUMBER OF POINTS PER CHANNEL INPUT BOX
FIGURE 10. FILE NAME AND DIRECTORY SAVE DIALOG BOX
FIGURE 12. USB SUPPLY DIALOG BOX
FIGURE 13. I2C TRANSACTION DIALOG BOX

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• Configure the site as desired. The slave address in the upper
right of the button indicates the device that is being
configured. When multiple ISL28022s are connected to
dongle, the software arranges the site in ascending order of
the ISL28022 slave addresses connected to the dongle.
• To advance to the next site/device, press around the rim of the
button. Continuously pressing the rim of the button will loop
through all ISL28022 devices connected to the dongle.
• Pressing the “Start Collecting Data” button or saving data from
the front panel will only collect data for the site chosen.
SAVING AND LOADING THE CONFIGURATION FILES
•Thesoftwareallowstheuser to save and load the
configuration of each of the devices. To load or save a
configuration, select Load Config or Save Config under the File
drop down menu. A window will appear similar to Figure 10
that will ask for directory information of the file to save or load.
SYSTEM VIEW
• When multiple ISL28022 devices are connected to the dongle
board a system view screen is available. The system view
allows the user to view all the ISL28022 devices as configured.
• To enter the system view, select System under the View drop
down menu. The window in Figure 16 will appear while the
main GUI window will disappear.
• The window will size to the number of ISL28022 devices
connected to the dongle.
• Pressing the “Start Data Collecting” button will loop through all
sites and measure the configure parameters for each
ISL28022 device.
• Pressing the “Save Data” button will save data for all sites. See
“Saving Data” on page 6 for more detail.
• Pressing the “Single Site View” button will restore the main GUI
view.
FIGURE 14. PICTURE OF MULTIPLE ISL28022 EVALUATION BOARDS CONNECTED TO THE DONGLE BOARD
FIGURE 15. PICTURE OF THE MAIN GUI WITH AT LEAST ONE ISL28022 EVALUATION BOARD CONNECTED TO THE DONGLE BOARD

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FIGURE 16. PICTURE OF THE SYSTEM VIEW WINDOW FOR MULTIPLE ISL28022 CONNECTED TO THE DONGLE
FIGURE 17. PAGE 1 SCHEMATIC OF THE ISL28022 DONGLE

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FIGURE 18. PAGE 2 SCHEMATIC OF THE ISL28022 DONGLE
CONFIDENTIAL
IN REVIEW