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LTC2975 数据表(PDF) 11 Page - Linear Technology

部件名 LTC2975
功能描述  Total Power Management: Hot Swap, Intermediate Bus, Point-of-Load
Download  32 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC2975 数据表(HTML) 11 Page - Linear Technology

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dc2578af
DEMO MANUAL DC2578A
USING LTpowerPlay TO EXPLORE
The procedure for loading any new project file into the
operating memory of the ICs on the DC2578A board is
as follows:
1) File
 Open...
2) Select the desired file (it may be in your work area or
in the LTpowerPlay installation directory).
3) Press the GO ONLINE button to begin communicating
with the I2C bus.
4) Press the PC
 RAM button to download the register
settings to the ICs on the board.
which can include a problem with a channel (like CH5 in
Figure 16), a stored fault log, or simply commanded off
with power not good, as with CH0 and CH1 in the figure.
In Figure 17 we see the system tree when the hot swap
is communicating over the bus, but not supplying down-
stream power. All other ICs are off, so not communicating.
This is indicated by the red circle icons indicating a device
that is not communicating on the bus.
THE SYSTEM TREE
The main visualization of the overall system is the system
tree, which shows the status of each IC in the design at
a glance. Each power supply device and each channel is
represented in the tree. Each device’s type and I2C address
is shown, and each channel is labeled with an appropriate
name representing its function on the DC2578A board.
Select an IC or channel in the system tree by clicking it.
Colors and icons are important in the system tree. Each
little square icon is divided into a lower half labeled O
for OUTPUT ENABLE, and an upper half labeled S for
STATUS. Green means good, and red means fault. Gray
means inactive (OFF). Yellow means status warning,
Figure 15. System Tree
Figure 16. System Tree with Color Coding
Figure 17. System Tree with Limited Communication
The system can also be sub-divided by group. In the tab
above the system tree is a set of group names that repre-
sent the parts of the power hierarchy for this board. Select
a group by clicking its name (Figure 18). A selected group


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