Preliminary Datasheet  (02.02.2001)

The AV-DCDC-100 is a low power switching power supply for PCMotherboards, enclosed
in a standard PC Power supply case.

Its wide input voltage range allows use in many applications like in Cars.

Input Voltage Range: 10.5 15.5 V
Input Current: 0.2 6.5 A
Input peak Current: 10 A

Output Voltages:
+12V / 5 A (7A max) , Eff. ~ 60-80 %
+5 V / 5 A (7A max.), Eff. ~ 70-90 %
-12V / 0.7A (1A max.), Eff. ~ 50 %

Absolut maximum ratings*1:
Input Voltage: 8.5 18.5 V
Outputs: +12V / 8A
+ 5V / 7.5A
-12V / 1A

Ambient Temperature: 65°C
Short Circuit at any Output: Not longer than 10s

*1Absolute Maximum Ratings indicate limits beyond which damage to the device may


Efficiency :
Voltage / Current 0.5A 1A 2A 3A 4A 5A
+5V 77% 81% 80% 79% 78% 77% 75%

Graphic overview of Efficiency as PDF

Functional Description:

The +12V/-12V/-5V Converter Part is build in a push-pull configuration switching a low loss transformers
primary windings by 2 low RdsOn FETs. On the secondary site are high speed Shottky rectifiers to reduce
losses and big capacitors, especially designed for switching power supplys.

The +5V part is realized by a integrated power switching Circuit (LM2575), combined with an external P-FET, low loss inductors, shottky
rectifiers and big capacitors.

The Semiconductors are directly mounted on a 3-part heatsink wich is supported by a Fan (12V).


Shematics can be send via EMail on request