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Power Supply Implementation Guidelines
12 volt input power is the sole operational power source for the conga-TCA3. The remaining necessary voltages are internally generated on
the module using onboard voltage regulators.
A carrier board designer should be aware of the following important information when designing a power supply for a conga-TCA3 application:
•
We noticed that occassionally problems occur when using a 12V power supply that produces non monotonic voltage when powered up. The
problem is that some internal circuits on the module (e.g. clock-generator chips) 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. This problem is rare but has been observed in some mobile power supply applications. To ensure that this problem does not
ocur, observe the power supply rise waveform with an oscilloscope to determine if the rise is indeed monotonic and does not have any dips.
Do this during the power supply qualification phase to ensure that the above mentioned problem does not occur in the application. For
more information, see the “Power Supply Design Guide for Desktop Platform Form Factors” document at www.intel.com.
5.1.16
Power Management
ACPI 5.0 compliant with battery support. Also supports Suspend to RAM (S3).
