Kontron KTH81-mITX - Manual (Page 22)

KTD-N0882-H Page 22 System Specification
KTQ87/KTH81 Users Guide
3.6 Power Consumption
In order to ensure safe operation of the board, the ATX12V power supply must monitor the supply voltage
and shut down if the supplies are out of range – refer to the hardware manual for the actual power supply
specification. Please note, In order to keep the power consumption to a minimal level, boards do not
implement a guaranteed minimum load. In some cases, this can lead to compatibility problems with ATX
power supplies, which require a minimum load to stay in regulation. The KTQ87/mITX / KTH81/mITX board
must powered through the ATX4P (4-pole) and the ATX24P (24-pole) connector using standard ATX power
supply.
ATX12V supply: Both ATX4P connector and ATX24P connector must be used in according to the ATX12V PSU
standard.
Warning: Hot Plugging power supply is not supported. Hot plugging might damage the board.
The requirements to the supply voltages are as follows:
Supply Min Max Note
VCC3.3 3.135V 3.465V Should be ±5% for compliance with the ATX specification
Vcc 4.75V 5.25V Should be ±5% for compliance with the ATX specification.
Should be +5/ -0% to meet the USB standard.
+12V 11.4V 12.6V Should be ±5% for compliance with the ATX specification
–12V –13.2V –10.8V Should be ±10% for compliance with the ATX specification
-5V -5,50V -4.5V Not required for the KTQ87 boards
5VSB 4.75V 5.25V Should be ±5% for compliance with the ATX specification
On the following pages you will find “total system power examples” for mITX and Flex boards in different
configurations:
mITX, Total System power example:
mITX, Low Power Configuration
mITX, High Power Configuration
Flex, Total System power example:
Flex, Low Power Configuration
Flex, Medium Power Configuration
Flex, High Power Configuration