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DC1962C-KIT

Description
eval board pmbus power manager
CategoryDevelopment board/suite/development tools   
File Size958KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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eval board pmbus power manager

DEMO MANUAL DC1753A
LTC3880EUJ
Dual Phase Step-Down
DC/DC Controller with
Digital Power Management
Description
Demonstration circuit 1753A is a dual phase single-output,
synchronous buck converter featuring the LTC
®
3880EUJ,
a dual phase current mode controller with digital power
management. There are two versions of the board available:
n
DC1753A-A: senses inductor current across a sense
resistor. Default switching Freq = 350kHz
DC1753A-B: senses inductor current with the inductor
DCR. Default switching Freq = 425kHz
n
evaluation of the DC/DC converter aspects of the LTC3880.
To fully explore the extensive digital power management
features of the part, download the LTpowerPlay™ GUI
software onto your PC and use LTC’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, 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 the LTpowerPlay for LTC3880 Quick Start Guide.
Design files for this circuit board are available at
http://www.linear.com/demo
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Either version can be populated with the LTC3880EUJ-1,
which allows the user to provide bias power to the IC from
an external power supply.
The output voltage of the board can be programmed from
0.5V to 3.3V, with output current up to 40A. The factory
default setting for the output is 1.8V.
The DC1753A powers up to default settings and pro-
duces power based on configuration resistors without the
need for any serial bus communication. This allows easy
performance summary
SYMBOL
V
IN
V
OUT
V
OUT_ACCURACY
I
OUT
f
SW
, A
f
SW
, B
EFFICIENCY
PARAMETER
Input Supply Range
Output Voltage Range
Output Voltage Accuracy
Output Current Range
Factory Default Switching, Freq: A (R
SENSE
)
Factory Default Switching, Freq: B (DCR)
Peak Efficiency
Specifications are at T
A
= 25°C
CONDITIONS
I
OUT
= 0A to 20A, V
IN
= 6.5V to 24V
I
OUT
= 0A to 20A, V
IN
= 6.5V to 24V
V
OUT
for 0.5V to 3.3V
0
350
425
V
OUT
= 1.8V, See Figures 6 and 7
91.8
MIN
6.5
0.5
TYP
12
1.8
±0.5
40
MAX
24
3.3
UNITS
V
V
%
A
kHz
kHz
%
dc1753af
1
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