Analog Devices AD8452 User Manual

One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
AD8452

FEATURES

Fully functional Li-Ion cell formation and testing similar to
real-world manufacturing equipment
Ability to charge and discharge batteries under constant
current and constant voltage control
Energy recycling from discharging battery into a dc bus
Full featured system evaluation board based on the AD8452
PC software for control and monitoring of system
parameters
Compatible with the System Demonstration Platform,
SDP-S (EVAL-SDP-CS1Z)

EVALUATION KIT CONTENTS

Analog interface board
Power module board (10 V to 20 V dc operating range)
SDP-S board for data transfer to PC
Standard USB A to Mini-B USB cable
Printed user guide
Evaluation kit software CD

HARDWARE REQUIREMENTS

Bench power supply, 12 V to 24 V dc (current depending on
desired battery charge rate)
Test battery or electronic load
Windows PC with a USB port

WARNING

When testing this system with lithium-ion (Li-Ion) batteries,
take care not to overcharge or overdischarge the batteries, or to
sink/source more than the maximum current recommended by
the manufacturer of the battery. Exceeding these ratings can not
only damage the battery, but can also cause it to explode or
catch on fire.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Battery Testing and Formation Evaluation Board
Rev. 0 | Page 1 of 32
AD8452 System Demo User Guide

GENERAL DESCRIPTION

The AD8452 system demo evaluation kit is a recommended
starting point for users building battery formation and test
equipment based on the Analog Devices, Inc., AD8452 precision
analog front end and pulse-width modulation (PWM) controller.
The evaluation kit includes an analog interface board and a
power module board.
In addition to the AD8452, the analog interface board also includes
an AD5689R 16-bit, precision digital-to-analog converter (DAC)
to set the current and voltage set points, and an
Σ-Δ analog-to-digital converter (ADC) to monitor the battery
voltage and current.
The analog interface board includes built-in voltage regulators
so that it can be powered either from the bus power inputs or
directly from a 15 V dc supply through a screw terminal connector.
The analog interface board connects to the Analog Devices System
Demonstration Platform (SDP-S) through a 120-pin connector.
The SDP-S board connects to the user interface software through
the USB port, allowing the user to set the current and voltage
set point as well as the mode of operation (charge or discharge).
In addition, the user can monitor the battery voltage and
current by reading the data output from the AD7173-8.
The analog interface board connects to the power module board
through three multipin headers. This modular approach allows
the user to design and test their own power module boards,
designed for the current output range in their end applications,
with the analog interface board of this reference design.
The standard power module board supports charge and discharge
currents of up to 10 A. It includes the power metal-oxide
semiconductor field effect transistors (MOSFETs), the inductor,
and the input and output capacitors required to implement a
buck or boost regulator, depending on the operating mode.
Full specifications of the AD8452 are available in the product data
sheet, which must be consulted in conjunction with this user guide
when working with the evaluation kit.
UG-1181
AD7173-8 24-bit,