Datasheet

APPLICATION NOTES
1. OUTPUT DE-RATING
The operating case temperature range of the VHB75 series is -40°C to +100°C. When operating the VHB75, proper derating or cooling
is needed. Following is the derating curve of VHB75 without heat sink.
FIGURE 1. OUTPUT DERATING (FORCED CONVECTION WITH NO HEAT SINK)
rev.
page
date
DESCRIPTION: dc-dc converter
3 of 6
05/2009
20050 SW 112
th
Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2382
PART NUMBER: VHB75
Where:
The power dissapation (Pd) is
Pd= Pi - Po = Po (1-η )/ η
The thermal resistances are listed below.
The temperature rise (D T):
D T = Pd * Rca
For more information, please visit the product page.