820152 DC-DC Supply 12Vin 120W
KTD-00695-D Public User Manual Date: 2009-11-03 Page 1 of 4
12V Input
SATA
Std. HDD
ATX12V cable kit
FDD
User Manual
for the
820152 DC-DC Power Supply 120W 12Vin
820152 DC-DC Supply 12Vin 120W
KTD-00695-D Public User Manual Date: 2009-11-03 Page 2 of 4
Introduction
The 820152 DC-DC Power Supply is a fully compliant ATX power supply designed to power a wide variety of
motherboard like the KT690mITX, 786LCD/mITX, 886LCD-M and 986LCD-M families of boards. It has
included cable kit inclusive P4-12V cable, as required by the KT690mITX and 986LCD-M families, and it is
supporting a wider temperature range than the standard embedded PC range 0 - 60ºC. When the DC-DC
Supply is installed it will not influence the total height of the motherboard, however for some boards some free
space is needed near the ATX Power Connector: The 886LCD-M/mITX require s 5 mm free space and the
KT690mITX and 986LCD-M/mITX families of boards require 10 mm free space.
The power supply shall be powered by regulated 12V with the tolerance +5% -3%. The 12V is switched and
then used as 12V output.
It is recommended to make sure that the DC-DC Power Supply can be used in a specific application by
measure the maximum load of each voltage and then compare it to the maximum allowed load. In order to
estimate if the DC-DC Power Supply is suitable for a specific project the following table can be used.
The allowed load (without forced air) can be compared to the maximum load of the actual board. Maximum
load from LCD, HDD, PCI, AGP cards must be taken into consideration to make sure none of the outputs is
overloaded. The “green” numbers are the available power for these loads.
* Note that there is no power left over for a display requiring 5V supply voltage.
Voltage Output Max load / [A]
(fan less)
Peak Load / [A]
(< 60 sec.)
5V 4,8 8
5VSB 1,5 2
3.3V 4,8 8
-12V 0,05 0.1
12V 6 10
Loads in Ampere
KT690mITX 786LCD/mITX 886LCD-M 986LCD-M Voltage Output
Turion
1.6G
Sempron
1.00G
733/133 400/100 1600/400 800/400 Duo 2GHz Celeron
1.06G
5V 3,2 1,6 2,4 2,4 1,7 3,1 1 3,8 4,7 0,1*3 1,8 2,5 2,3 2,1 2,7
5VSB 0,3 1,2 0,3 1,2 0,24 1,25 0,24 1,25 1,2 0,3 1,2 0,3 0,7 0,8 0,2 1,3
3.3V 1,3 3,5 1,3 3,5 3,2 1,6 2,5 2,3 2,6 2,2 2,6 2,2 1,3 3,5 1,6 3,2
-12V - 0,05 - 0,05 - 0,05 - 0,05 - 0,05 - 0,05 0,05 0,0 - 0,05
12V 2,4 3,6 0,8 5,2 0,4 5,6 0,3 5,7 0,6 5,4 0,6 5,4 2,7 3,3 0,6 5,4
820152 DC-DC Supply 12Vin 120W
KTD-00695-D Public User Manual Date: 2009-11-03 Page 3 of 4
Installation guide
1. Plug in (press in) the DC-DC Power Supply to the Mother Boards ATX power connector.
Please notice that for the KT690mITX and 986LCD-M families:
Four pins of the ATX Power Connector are not used, but the connector system is keyed so
the DC-DC Power Supply can not be mounted in a wrong position.
The ATX connector lock has no effect.
ATX12V cable shall be connected.
2. Connect HDD, CD-ROM, ADD or ADD2 card if required. If more power connectors are needed then a
standard HDD/floppy “Y” splitter cable can be used.
3. Connect a 12 VDC power source to the DC-to-DC connector, centre pin / white wire is positive (+).
4. Turn on the Mother Board by using the Power On Button pin (pin 16) in the Front Panel Connector
(alternatively short circuit pin 16 and pin 18 for half a second).
Removing the DC-DC Power Supply
In order to remove the DC-DC Power Supply you must release the power connector latch (except for the
KT690 and 986LCD-M families) and then at the same time as gently as possible pulling at the PCB. Do NOT
pull at components or the wire harness.
820152 DC-DC Supply 12Vin 120W
KTD-00695-D Public User Manual Date: 2009-11-03 Page 4 of 4
Specifications
Input Requirements
12V regulated, +5% / -3%, max=10A (load dependent). Over-voltage shutdown will occur at ~13-13.5V.
DC-Jack: Female, panel mount, 2.5 * 5.5 * 10 mm.
Voltage outputs
Output
voltage
Max Load / [A]
(Fan less)
Max Load / [A]
(Forced air)
Peak Load /
[A]
(<60 sec.)
Regulation
5V 4,8 6 8 +/- 1.5%
5VSB 1,5 1.5 2 +/- 1.5%
3.3V 4,8 6 8 +/- 1.5%
-12V 0,05 0.05 0.1 +/- 5%
12V 6 6 10 Switched input
Over load protection will be effected when either of the loads (+5V & +3.3V) exceeds > 200% Max Load.
After turning on, at least 20 ms will be needed for the rise of +5VSB output voltage (measured from 10% to
95%) to reach its peak.
Efficiency Ratings, 3.3 and 5V
5V / [A] Efficiency / [%] 3.3V / [A] Efficiency / [%]
1 86 1 85
3 94 3 93
5 96 5 94
8 93 8 91
Lifetime: MTBF=100K hours at 55 ºC.
Size: (L, W, H) = (44.5, 20, 30) mm
Operating environment: Temperature: -20 to 85 ºC. Relative Humidity 10 to 90% (non-condensing).
Shipping and storage: Temperature -40 to +90 ºC. Relative humidity 5 to 95% (non-condensing).
Certifications: EN55024, EN55022 Class B (CE certification), Australia/New Zealand (using CISPR 22,
EN55022), Japan (VCCI: using CISPR 22, ANSI C63.4), United States (FCC Part 15, Subpart B, Class B),
Canada (ICES-003 using CISPR 22, ANSI C63.4)
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