KTQ87/mITX Users Guide
KTD-N0882-D Page 19
2.5 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 board must powered through the ATX+12V (4-pole) and the ATX/BTX (24-pole) connector
using standard ATX power supply.
ATX12V supply
: Both ATX+12V connector and ATX/BTX 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
System Specification