6 power consumption, Power consumption, Power consumption 3.6 – Kontron KTQM87-mITX User Manual

Page 19

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KTD-N0886-A

Page 17

System Specification


KTQM87/mITX Users Guide

Power Consumption

3.6

In order to ensure safe operation of the board, the ATX+12V power supply must monitor the supply voltage

and shut down if the supplies are out of range – refer to 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 KTQM87

board must be powered through the ATX+12V-4p

(4-pole) and the ATX+12V-24p (24-pole) connectors using standard ATX power supply.


ATX12V supply: Both ATX+12V-4p connector and ATX+12V-24p 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 KTQM87 boards

5VSB

4.75V

5.25V

Should be ±5% for compliance with the ATX specification

Note: -12V is only used for COM ports (COM1 and COM2).



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