Kontron 820155 DC-DC User Manual

820155 DC-DC Supply 10-32Vin 90W

KTD-00740-C Public User Manual Date: 2008-04-24 Page 1 of 9

User Manual

for the

820155 DC-DC Power Supply 90W 10-32Vin

820155 DC-DC Supply 10-32Vin 90W

KTD-00740-C Public User Manual Date: 2008-04-24 Page 2 of 9

Introduction

The 820155 DC-DC Power Supply is a fully compliant ATX power supply designed to power a wide variety of
motherboards like the KT690mITX, 786LCD/mITX, 886LCD-M and 986LCD-M families of boards. It has
included cable kit inclusive ATX+12V cable, as required by the KT690 and 986LCD-M families.

The 820155 comes with complete cable harness consisting of:

Note 1: Used for battery driven application. Not needed for standard ATX PSU mode.

+V Cable

+

SW Cable

-

Jumpers

- ATX cable (220 mm) with 1x HDD power plugs, 1x SATA power plug and 1x FDD power plug.

- ATX+12V Power cable (200 mm).

- Power input wires, 3 pieces (red, black and white) (300mm) open-ended.

- 2 wire cable for implementing PSU controlled motherboard Power On Button (210 mm). (Note 1)

- Set of Jumpers (3 pieces) to select between various power sequencing schemes. (Note 1)

820155 DC-DC Supply 10-32Vin 90W

KTD-00740-C Public User Manual Date: 2008-04-24 Page 3 of 9

The power supply can be operated in two types of modes: “Standard ATX Supply Mode” and “Battery Driven
Application Mode”. The input power voltage shall be 10 – 32V except for Battery Driven Application Mode
where the minimum power input voltage is 11.2V (down to 8V is allowed for maximum 1 minute). The power
input is protected against over-voltage transients, short circuits (>15A) and in Battery Driven Application Mode
the battery is protected against Deep Discharging.

Note 1: Peak Load (< 30 sec.) These values can be used as maximum load if active cooled.

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.

Voltage Output Max load

(fan less)

Peak Load

Note 1.

5V 5,5A 6A

5VSB 1,45A 2A

3.3V 3,9A 6A

-12V 0,11A 0.15A
12V 3,3A 6A

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

2G

Celeron

5V 3,2 2,3 2,4 3,1 1,7 3,8 1 4,5 4,7 0,8 3 2,4 2,5 3,0 2,1 3,4

5VSB 0,3 1,2 0,3 1,2 0,3 1,2 0,3 1,2 1,2 0,3 1,2 0,3 0,7 0,7 0,2 1,2

3.3V 1,3 2,6 1,3 2,6 3,2 0,7 2,5 1,4 2,6 1,3 2,6 1,3 1,3 2,6 1,6 2,3

-12V - 0,1 - 0,1 - 0,1 - 0,1 - 0,1 - 0,1 0,05 0,05 - 0,1
12V 2,4 0,9 0,8 2,5 0,4 2,9 0,3 3,0 0,6 2,7 0,6 2,7 2,7 0,6 0,6 2,7

Unused available power on some of the power lines can to some extend be used on other power lines.

Mechanical Drawing

45.0

27.0

1.06G

Measures in mm.

160.0153.07.0