EVAL-ADM1075EBZ User Guide
UG-304
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
Evaluating the
ADM1075
−48 V Hot-Swap Controller and Digital Power Monitor with
PMBus Interface
FEATURES
Full support evaluation kit for the
ADM1075
Supports LFCSP device package
Board populated and tested with −48 V, 10 A, 680 µF design
Input voltage range of −36 V to −75 V
PMBus™ communication supported
Isolated PMBus interface for −48 V operation
Special N-MOSFET footprint to accommodate different FET
packages
Supports up to 3 sense resistors in parallel
Supports up to 3 field effect transistors (FETs) in parallel
3 on-board
ADT75
accurate temperature sensors
Supports cascade setup for multiple boards
Toggle and push-button switches for easy input control
LED indicated status outputs
PACKAGE CONTENTS
EVAL-ADM1075EBZ evaluation board
HARDWARE REQUIREMENTS
USB-to-serial-I/O interface
USB-SDP-CABLEZ
(The
USB-SDP-
CABLEZ
is not supplied in the evaluation kit and should be
ordered separately from Analog Devices, Inc. Only one
USB-SDP-CABLEZ
is required in the multiboard cascade
setup.)
8-way, 150 mm Micro-MaTch ribbon cable (optional)
SOFTWARE REQUIREMENT
Analog Devices hot-swap and power monitoring evaluation
software
GENERAL DESCRIPTION
The
EVAL-ADM1075EBZ
is a compact full feature evaluation
board for the
ADM1075-1ACPZ
and
ADM1075-2ACPZ
devices.
The layout gives users a clear visual of all the peripheral compo-
nents and the hot-swap power path. The layout also maximizes
the ability of the board to dissipate heat for some of the key
components on the power path, allowing evaluation of high
current hot-swap setups.
Three sense-resistor slots and three multipackage FET slots give
users great flexibility and allow them to simulate a wide range of
application setups.
Multiple test points allow easy access to all critical points/pins.
Seven LEDs give users a direct visual indication of variations in
the board status, such as system input voltage, isolation power,
IC PWRGD output, LATCH output, and GPO outputs. Three
ADT75
digital temperature sensors on the back of the board
allow users to obtain the FET temperature through an I
2
C bus
in real time.
The board supports I
2
C communication, allowing users to
communicate with the
ADM1075
and the
ADT75
. A 64 Kb I
2
C
EEPROM is used to store the ADC resistor divider and sense
resistor values on board for use with the evaluation software.
The evaluation kit also supports cascade setup so that multiple
evaluation boards can be connected and share the same I
2
C bus.
The boards are fully compatible with the
ADM1075
evaluation
software tool, which can be downloaded at
http://www.analog.com/hotswaptools
.
Users need a
USB-SDP-CABLEZ
USB-to-I
2
C dongle to use the
evaluation software tools. A Micro-MaTch ribbon cable may also
be required if multiple evaluation boards are cascaded. This
cable can be ordered through Farnell.
The evaluation board is prepopulated and tested with a −48 V
(−36 V minimum to −75 V maximum), 10 A hot-swap design
with a 680 µF output capacitor. The part is configured to retry
seven times; however, the board is easily reconfigurable to select
different retry schemes (see Table 6).
Complete specifications for the
ADM1075
can be found in the
ADM1075
data sheet available from Analog Devices and should
be consulted in conjunction with this user guide when using the
evaluation board.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. C | Page 1 of 19
