Regulation - Kontron CP3002-RC User Manual

CP3002-RC/CP3002-RA
5.1.3.3

Regulation

The power supply shall be unconditionally stable under line, load, unload and transient load
conditions including capacitive loads. The operation of the power supply must be consistent
even without the minimum load on all output lines.
Warning!
All of the input voltages must be functionally coupled to each other so that if
one input voltage fails, all other input voltages must be regulated proportion-
ately to the failed voltage. For example, if the 5 V begins to decrease, all other
input voltages must decrease accordingly. This is required in order to preclude
cross currents within the CP3002-RC/CP3002-RA.
Failure to comply with above may result in damage to the board or improper
system operation.
Note ...
If the main power input is switched off, the supply voltages will not go to 0 V
instantly. It will take a couple of seconds until the capacitors are discharged. If
the voltage rises again before it has gone below a certain level, the circuits
may enter a latch-up state where even a hard RESET will not help any more.
The system must be switched off for at least 3 seconds before it may be
switched on again. If problems still occur, turn off the main power for 30 sec-
onds before turning it on again.
ID 1039-3625, Rev. 1.0
Power Considerations
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