EVAL-ADM1073MEB Analog Devices Inc, EVAL-ADM1073MEB Datasheet - Page 9

• Manufacturer Part Number: EVAL-ADM1073MEB
• Description: BOARD EVAL MICRO FOR ADM1073
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADM1073MEB

• Main Purpose: Power Management, Hot Swap Controller
• Utilized Ic / Part: ADM1073
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -

4.
5.
ADM1073 RESIDING ON A BACKPLANE
The ADM1073 can perform similar undervoltage and
overvoltage protection and current limiting functions when
placed on the backplane itself.
This type of setup can be recreated with the ADM1073
evaluation board. Power can be applied through a backplane
board or with power leads, as described in the ADM1073
Residing on a Plug-In Board section. The power supply and the
evaluation board should be connected together by either
method, and the power applied (Figure 4). This unit now
represents a live backplane with built-in ADM1073 circuitry in
Figure 5.
R3
R4
LOGIC I/Os
You can also apply power to the board via Connector J8. A
simple backplane board can be constructed that plugs into
Connector J8 and provides the −48 V supply. You can now
simulate a live insertion event by plugging the backplane
board (see the Backplane Board section) with a live
negative supply into Connector J8.
To simulate a reseating event, disconnect the evaluation
board and backplane boards and reconnect them while the
supply is live. This corresponds to manually reseating a
plug-in module. This method recreates a board insertion
and/or removal scenario more accurately, because the
plugging or unplugging of a board from a live supply
triggers the ADM1073 to respond. Again, take the proper
precautions when connecting live voltages to the
evaluation board.
BACKPLANE
R
–48V
R1
R2
Figure 5. Evaluation Board Simulating the Setup in Figure 3
TIMER
0V
BOARD
Figure 4. ADM1073 Residing on a Backplane
C
TIMER
J8
C
LIVE BACKPLANE
5
SS
R
EVALUATION
ADM1073
SENSE
BOARD
R
DROP
FET
HOT SWAP
J9
PLUG-IN BOARD
BOARD
LOAD
LOAD
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To simulate a live insertion event with the ADM1073 residing
on the backplane:
1.
2.
Note that the ADM1073 can be employed on both the plug-in
board/module and the backplane sides of a system. This
provides the system with double protection.
LOAD BOARD
Figure 6 is a diagram of a load board that emulates the load on a
plug-in module and connects to Connector J9. This board
contains a series resistance and capacitance connected in
parallel. A set of jumpers changes the manner in which the
components are applied: resistor only, capacitor only, RC in
parallel, or short circuit. The board should be set up via the
jumpers before power is applied. For example, to set up the load
board to emulate an RC load, place shorting links into both LK1
A and LK1 B jumpers, and leave LK2 open.
BACKPLANE BOARD
You can also employ a backplane board to emulate the back-
plane side of your system. This board provides an alternative
way of applying power to the ADM1073 evaluation board
(instead of using the J1 to J4 power connectors of the
evaluation board).
1.
2.
Connect the load to the evaluation board via Connector J9,
or J9 and J10, as described in the ADM1073 Residing on a
Plug-In Board section.
To represent reseating, disconnect and reconnect the load
from/to the evaluation board.
Insert the backplane board into Edge Connector J8 of the
evaluation board to apply power to the board. This might
be useful when simulating live insertion and removal
events with the ADM1073 evaluation kit, especially when
simulating a situation where the ADM1073 resides on a
plug-in module.
To recreate a live insertion event, plug the backplane
board (with a live supply) into the evaluation board
(Connector J8).
P1–10
P1–12
P1–11
P1–1
P1–2
P1–3
P1–4
P1–5
P1–6
P1–7
P1–8
P1–9
Figure 6. Diagram of Load Board
2
1
LK2
R1
R2
EVAL-ADM1073EB
R3
R4
4
3
B
2
1
A
LK1
C1