AIF25R48_03 Datasheet, PDF (15/29 Pages) Astec America, Inc – Isolated DC/DC Converter Module

AIF25R48 Series Technical Reference Note
The OTP point is about 85 without a heatsink.
Current Sharing
Fig.5 Measuring OTP Point of AIF25R48 series
Parallel operation is available by connecting the modules as shown in Fig 6.
As variance of output current drew from each power supply is 10% maximum, the total
output current must not exceed the value determined by the following equation.
(Output current in parallel operation)=(the rated current per module)*(number of module)*0.9
In parallel operation, the maximum operative number of modules is 7.
When output voltage adjustment is not used. TRM, VB open, R1, R2, VR1, Rva, Rvb, Rta,
Rtb… are not needed.
Thick wire should be used for wiring between the power supply and load, and line drop
should be less than 0.3V.
Connect the sensing line and the power line by one point after connecting each power
supply’s sense pins (+Sense, -Sense).
DATE: May 28, 2003
MODEL : AIF25R48 SERIES
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