is that some internal circuits on the module (e.g. clock-generator chips) will generate
their own reset signals when the supply voltage exceeds a certain voltage threshold.
A voltage dip after passing this threshold may lead to these circuits becoming
confused resulting in a malfunction. It must be mentioned that this problem is quite
rare but has been observed in some mobile power supply applications. The best way
to ensure that this problem is not encountered is to observe the power supply rise
waveform through the use of an oscilloscope to determine if the rise is indeed
monotonic and does not have any dips. This should be done during the power supply
qualification phase therefore ensuring that the above mentioned problem doesn't
arise in the application. For more information about this issue visit
www.formfactors.org and view page 25 figure 7 of the document “ATX12V Power
Supply Design Guide V2.2”.
4.4.5 Power Management
APM 1.2 compliant. ACPI 2.0 compliant with battery support. Also supports Suspend to
RAM (S3).
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