KTGM45 Users Guide
KTD-N0793-L
Page 20
2.6
Power Consumption
In order to ensure safe operation, 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.
The KTGM45/Flex board is powered through the ATX/BTX connector and ATX+12V connector. Both
connectors must be used in according to the ATX12V PSU standard.
Optionally 12V power supply unit can be used via ATX+12V connector when power line requirements
for PCIe card, PCI card and "device on 24-pole plug" is below 7.6A on 3.3V, 5A on 5V, 25W on 3.3V and 5V
in common, and 5A on 12V.
The requirements to the supply voltages are as follows:
Supply
Min
Max
Note
VCC3.3
3.168V
3.432V
Should be
±
4% for compliance with the ATX specification
Vcc
4.75V
5.25V
Should be
±
5% for compliance with the ATX specification.
Should be minimum 5.00V measured at USB connectors
in order to meet the requirements of 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 KTGM45 boards
5VSB
4.75V
5.25V
Should be
±
5% for compliance with the ATX specification
Static Power Consumption
The power consumption of the KTGM45/Flex Board is measured under:
1- DOS, idle, mean
2- WindowsXP, Running 3DMARK 2001 & CPU BURN, mean
3- S1, mean
4- S3, mean
5- S4, mean
The following items were used in the test setup:
1.
Low Power Setup
: 2.0GHz (Celeron 575) & 1x 1GB Samsung 2Rx8 PC3-10600U-09-00-A0 DDR3 Ram
High Power Setup
: 2.53GHz (T9400) Core Duo & 2x 2GB Samsung 2Rx8 PC3-10600U-09-00-A0
DDR3 Ram
2. 12V active cooler (Kontron PN 823132).
3. USB Keyboard/Mouse (Logitech Corded Media Keyboard / Logitech First/Pilot Wheel MSE)
4. TFT (Samsung SyncMaster 953bw)
5. HD (Seagate Barracuda ST380815AS - 7200.10 - 80 GB)
6. ATX PSU (SHG computers - SCP400LN-PL)
7. Tektronix MSO 2024
8. Fluke Current Probe 80i-100S AC/DC
Test setup
Note
: The Power consumption of CRT, HD and Fan is not included.
ATX supplies
KTGM45/Flex
PSU
Gnd
Current
Probe
Tektronix MSO 2024
System
