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dc1989aaf
DEMO MANUAL DC1989A-A
Description
LTM4676EY
Dual 13A or Single 26A µModule Regulator
with Digital Power System Management
Demonstration circuit 1989A-A is a high efficiency, high
density, µModule regulator with 4.5V to 16V input range.
The output voltage is adjustable from 0.5V to 4V, and it can
supply 50A maximum load current. The demo board has
two
µModule regulators, and the LTM4676 is
a dual 13A or single 26A step-down regulator with PMBus
power system management. Please see LTM4676 data
sheet for more detailed information
DC1989A-A powers up to default settings and produces
power based on configuration resistors without the need
for any serial bus communication. This allows easy evalu-
ation of the DC/DC converter. To fully explore the extensive
power system management features of the part, download
the GUI software LTpowerPlay™ onto your PC and use
LTC’s I
2
C/SMBus/PMBus dongle DC1613A to connect to
L
, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, Dust Networks and Dust are
registered trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
the board. LTpowerPlay allows the user to reconfigure the
part on the fly and store the configuration in EEPROM, view
telemetry of voltage, current, temperature and fault status
GUI Download
The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay GUI for LTM4676 Quick Start Guide.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1989A-A
Figure 1. LTM4676/DC1989A-A Demo Circuit
