USER’S MANUAL
AN1932
Rev 3.00
February 1, 2016
ISL28023EVAL1Z, ISL28023EVAL2Z
ISL28023 Precision Digital Power Monitor Evaluation Kit
AN1932 Rev 3.00 Page 1 of 20
February 1, 2016
Introduction
The Precision Digital Power Monitor (DPM) Evaluation Kit is a
three evaluation board design that demonstrates the
functionality of the ISL28023. The ISL28023 is an IC with a
16-bit Analog-to-Digital Converter (ADC), an 8-bit
Digital-to-Analog Converter (DAC), and analog comparators
that monitors for undervoltage, overvoltage and overcurrent
conditions. The IC is serially controlled through an I
2
C bus. The
device abides by the PMBus standards.
The DPM Evaluation Kit is accompanied by a graphical user
interface (GUI) that allows the user to configure ISL28023 for
monitoring bus voltage and current in a specific application.
The GUI has a data save feature allowing the transfer of
measurement data to other software application for analysis.
The ISL28023 DPM Evaluation Kit consists of three boards; a
USB dongle, a generic ISL28023EVAL1Z board and an
ISL28023EVAL2Z demonstration board.
Dongle Evaluation Board
(ISLUSBPWRDONGLE1Z)
The dongle board mates from a PC to the ISL28023 via a
microcontroller. The microcontroller converts USB commands
sourced from the PC to an I
2
C header. The I
2
C pins (SCL and
SDA) are connected to the right angle header at the edge of
the board. The dongle board has a circuit that converts the USB
supply voltage to 3.3V. The 3.3V supply circuit has an
ISL28022 connected to monitor the current sourced by the
supply. Each circuit has been optimized to measure 100mA at
full scale. The 3.3V supply output and the SDA and SCL lines of
the I
2
C bus are routed to the right angle connector.
ISL28023 Generic Board (ISL28023EVAL1Z)
The generic ISL28023 board is a nonconfigured ISL28023 that
connects the analog inputs to the outside world. The board
allows a user to build a system that requires voltage, current or
power monitoring around the ISL28023. The analog inputs
(VINP, VINM and VBUS) of the ISL28023 accept input voltages
ranging from 0V to 60V. The ISL28023 allows the user to
uniquely configure the slave address via jumper selections.
The ISL28023 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 ISL28023 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 ±80mV. The
differential voltage between the VINP and VINM pins can
withstand a magnitude of 60V. The differential supply
tolerance allows for the debugging of catastrophic circuit
events.
ISL28023 Demo Board (ISL28023EVAL2Z)
A peripheral circuit is required to demonstrate the functionality
of the ISL28023. The ISL28023 is paired up with a buck
regulator (ISL85415) and some sample loads to measure the
current and efficiency calculations of the regulator to the load.
The buck circuit allows the user to define a unique load that
connects to the regulator. The user can define the switching
frequency of the regulator by programming a resistor value
into the ISL23345 digital potentiometer. All features of the
ISL28023 are available.
Ordering Information
PART NUMBER DESCRIPTION
ISL28023EVAL1Z Evaluation Board
ISL28023EVKIT1Z Evaluation Kit
FIGURE 1. ISL28023 EVALUATION KIT EVALUATION BOARDS
USB DONGLE ISL28023EVAL1Z
GENERIC EVAL BOARD
ISL28023EVAL2Z
GENERIC EVAL BOARD
AN1932 Rev 3.00 Page 2 of 20
February 1, 2016
ISL28023EVAL1Z, ISL28023EVAL2Z
Evaluation Package (Online
Order)
The Digital Power Monitor Generic Evaluation Kit contains the
following items:
• ISL28023 Demo Board (ISL28023EVAL2Z)
• ISL28023 Generic Board (ISL28023EVAL1Z)
•USB to I
2
C Dongle Board (ISLUSBPWRDONGLE1Z)
• Evaluation Software (Online)
•User Guide
• ISL28023
Data sheet
Documentation for individual device can be found in the
following link:
http://www.intersil.com/products/ISL28023
System Requirements
• Windows 98/NT/2000/XP/VISTA/WIN7/Win8
• Available USB Port
Software Installation
Download the latest Evaluation Board GUI (Graphical User
Interface) from the following link:
ISL28023EVKIT1Z, ISL28025EVKIT1Z Evaluation Kit Software
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 Software with the ISL28023
Generic Board
To run the program, go to the "Start" menu and choose the
ISL28023setup folder, and then choose the
ISL28023GenEvalSoftwareSetup icon. Once clicked, the demo
software window should appear as illustrated in Figure 3
.
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 connection is successful,
the text on the button will be red and read "Disconnect Device" as
shown in Figure 3
. Otherwise, the button text will not change.
The evaluation program controls and measures an ISL28023
device on a single I
2
C/SMBus. The main software window
displays one site.
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
defaults 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 read out. The back light
of the display will toggle between yellow and gray. A back light 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 2. INSTALLATION WELCOME SCREEN