Kontron 986LCD-M/mITX Owner's manual

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 1 of 6
Applications Information
Power Supply Characteristics
986LCD-M/mITX
This note describes the power supply characteristics of the 986LCD-M/mITX
board including static/dynamic power consumption and power-on load
characteristics.

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 2 of 6
Revision history
Revision Date Description/changes
A 21-Sep-2006 Added S1,S3 & S4 Measurements
0 22-Jun-2006 Initial 968LCD-M/mITX Power Supply characteristics

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 3 of 6
Power Supply Characteristics of 986LCD-M/mITX
In order to ensure safe operation of the board, the ATX power supply must monitor the supply voltage and
shut down if the supplies are out of range – refer to the hardware manual for actual power specification.
The 986LCD/mITX board is powered through the ATX connector and the additional 12V separate supply for
CPU as specified in the ATX specification; besides this the power supplied to the board must be within the
ATX specification.
The requirements to the supply voltages are as follows:
Test system configuration
The following items were used in the test setup:
1. 986LCD/mITX board mounted w/ 2.0GHz Core Duo (T2500) & 1GB DDR2 Ram
2. 12V active cooler
3. PS/2 keyboard & mouse
4. CRT
5. HD
6. ATX PSU
7. Tektronix TDS 7404, P6345 probes
8. Fluke Current Probe 80i-100S AC/DC
Test setup
Note: The Power consumption of CRT, Fan and HD is not included.
Supply Min Max Note
Vcc3 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
+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 986LCD/mITX board
5VSB 4.75V –5.25V Should be ±5% for compliance with the ATX specification
ATX supplies
986LCD/mITX
PSU
Gnd
Current
Pr
obe
Tektronix TDS 7404

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 4 of 6
Power Consumption Tests
The power consumption tests performed on the 986LCD/mITX Board are as follow:
1- DOS, idle, mean
2- WindowsXP, Running 3DMARK & CPU BURN, mean
3- WindowsXP, Running 3DMARK & CPU BURN, peak
4- S1, mean
5- S3, mean
6- S4, mean
7- Inrush, peak
The results are to be found on the next pages.

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 5 of 6
986LCD-M/mITX Power Consumption Test results
DOS, Idle, mean Supply Current draw Power consumption
+12V 0.88A 10.56W
+5V 1.48A 7.4W
+3V3 1.22A 4.026W
-12V 0.05A 0.6W
5VSB 0A 0W
Total X 22.586W
Windows XP, 3DMARK2000 & CPUBURN, mean
Supply Current draw Power consumption
+12V 2.34A 28.08W
+5V 1.73A 8.65W
+3V3 1.22A 4.026W
-12V 0.05A 0.6W
5VSB 0A 0W
Total X 41.356W
Windows XP, 3DMARK2000 & CPUBURN, peak
Supply Current draw Power consumption
+12V 2.67A 32.04W
+5V 2.48A 12.4W
+3V3 1.28A 4.224W
-12V 0.08A 0.96W
5VSB 0A 0W
Total X 49.624W
S1, mean
Supply Current draw Power consumption
+12V 0.83A 9.96W
+5V 1.17A 5.85W
+3V3 1.21A 3.99W
-12V 0.03A 0.36W
5VSB 0A 0W
Total - 20.16W
S3, mean
Supply Current draw Power consumption
+12V 0 0W
+5V 0 0W
+3V3 0 0W
-12V 0.03A 0.36W
5VSB 0.64A 3.68W
Total - 4.04W

986LCD-M/mITX Power Supply Characteristics
KTD-00684-A Public Application Note Date: 2006-11-24 Page 6 of 6
S4, mean
Supply Current draw Power consumption
+12V 0 0W
+5V 0 0W
+3V3 0 0W
+-12V 0 0W
5VSB 0.64A 3.2W
Total - 3.2W
Inrush, peak
Supply Current draw
+12V 5.08A
+5V 2.48A
+3V3 3.52A
-12V 0.3A
5VSB 2.92A