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Evaluation Board User Guide
UG-320
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
Interleaved Two-Switch Forward Topology Featuring the ADP1046
FEATURES
Interleaved 2-switch forward switching power supply
12 V/25 A regulated output from 400 V dc input
Voltage feedback loop
Dynamic phase shedding
Integrated current balance between phases
I 2 C serial interface to PC
Software graphic user interface (GUI)
Programmable digital filters
7 PWM outputs including auxiliary PWM (for fan control)
Digital trimming
OrFET control for hot swap and redundancy
Current, voltage, and temperature sense through GUI
Digital current sharing
REFERENCE DESIGN CONTENTS
The evaluation system package contains the following items:
? User Guide UG-320
? ADP1046 300 W interleaved two-switch forward board
The USB-to-I 2 C dongle for serial communication (ADP1046-
CAUTION
This evaluation board uses high voltages and currents. Extreme
caution must be taken especially on the primary side to ensure
safety for the user. It is strongly advised to power down the
evaluation board when not in use. A current limited power
supply is recommended as an input because no fuse is present
on the board.
GENERAL DESCRIPTION
This evaluation board features the ADP1046 in a switching
power supply application. With the evaluation board and
software, the ADP1046 can be interfaced to any PC running
Windows? 2000, Windows NT, or Windows XP via the computer's
USB port. The evaluation board allows all the input and output
functions of the ADP1046 to be exercised without the need for
external components. The software allows control and monitor-
ing of the ADP1046 internal registers. The board is set up for
the ADP1046 to act as an isolated switching power supply with
a rated load of 12 V/25 A from an input voltage ranging from
350 V dc to 400 V dc.
USB-Z) and the software CD must be ordered separately.
Figure 1. Picture of Printed Circuit Board
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. A | Page 1 of 48
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