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The conga-TS370 supports the controlling of ATX-style power supplies. If you do not use an ATX power supply, do not connect the conga-TS370
pins SUS_S3/PS_ON, 5V_SB, and PWRBTN#.
SUS_S3#/PS_ON#
The SUS_S3#/PS_ON# (pin A15 on the A-B connector) signal is an active-low output that can be used to turn on the main outputs of an
ATX-style power supply. To accomplish this the signal must be inverted with an inverter/transistor that is supplied by standby voltage and is
located on the carrier board.
PWRBTN#
When using ATX-style power supplies, PWRBTN# (pin B12 on the A-B connector) is used to connect to a momentary-contact, active-low
debounced push-button input while the other terminal on the push-button must be connected to ground. This signal is internally pulled up
to 3V_SB using a 10k resistor. When PWRBTN# is asserted it indicates that an operator wants to turn the power on or off. The response to this
signal from the system may vary as a result of modifications made in BIOS settings or by system software.
Standard 12V Power Supply Implementation Guidelines
The 12 volt input power is the sole operational power source for the conga-TS370. Other required voltages are generated internally on the
module using onboard voltage regulators.
Note
When designing a power supply for a conga-TS370 application, be aware that the system may malfunction when a 12V power supply that
produces non-monotonic voltage is used to power the system up. Though this problem is rare, it has been observed in some mobile power
supply applications.
The cause of this 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,
thereby resulting in a malfunction.
To ensure this problem does not occur, observe the power supply rise waveform through an oscilloscope, during the power supply qualication
phase. This will help to determine if the rise is indeed monotonic and does not have any dips. For more information, see the “Power Supply
Design Guide for Desktop Platform Form Factors” document at www.intel.com.
