1
Rev. A
DESCRIPTION
LTM4676A
Dual Step-Down µModule
Regulator with PMBus Digital
Power System Management
Demonstration circuit 1811B-B is a dual-output, high
efficiency, high density, µModule
®
regulator with 4.5V to
26.5V input range. Each output can supply 13A maximum
load current. The demo board has a
4676A
µModule
regulator, which is a dual 13A or single 26A step-down
regulator with PMBus power system management. Please
see LTM4676A data sheet for more detailed information.
The DC1811B-B powers up to default settings and pro-
duces power based on configuration resistors without
the need for any serial bus communication. This allows
easy evaluation of the DC/DC converter. To fully explore
the extensive power system management features of the
part, download the GUI software LTpowerPlay
®
onto your
BOARD PHOTO
Figure 1. Dual-Output LTM4676A/DC1811B-B Demo Circuit
PC and use ADI’s I
2
C/SMBus/PMBus dongle DC1613A
to connect to the board. LTpowerPlay allows the user to
reconfigure the part on-the-fly and store the configuration
in EEPROM, view telemetry of voltage, current, tempera-
ture and fault status.
GUI Download
The software can be downloaded from:
For more details and instructions of LTpowerPlay, please refer
to LTpowerPlay GUI for LTM4676A Quick Start Guide.
Design files for this circuit board are available
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