GCS265 Datasheet, PDF (8/8 Pages) XP Power Limited – AC-DC Power Supplies

GCS265 Series
AC-DC Power Supplies
Thermal Considerations
In order to ensure safe operation of the PSU in the end-use equipment, the temperature of the components listed in the table below must
not be exceeded. Temperature should be monitored using K type thermocouples placed on the hottest part of the component
(out of direct air flow). See below for component locations.
Component
T1 Coil
L3 Coil
Q1 Body
Q3 Body
C6
C23
Temperature Measurements (At Ambient 50 °C)
Max Temperature °C
120 ° C
120 ° C
120 ° C
120 ° C
105 ° C
105 ° C
--_{Service Life}
The estimated service life of the GCS265 Series is determined by the cooling arrangements and load conditions experienced in the end
application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of a
key capacitors with in the product when installed by the end application. The worst case of the two figures should be taken as the indicative
service life in 24/7 operation.
The graph below expresses the estimated lifetime of a given component temperature and assumes continuous operation at this
temperature.
Estimated Service Life vs Component Temperature
185000
165000
145000
125000
105000
85000
65000
45000
25000
5000
105
95
85
75
65
55
C6 & C23 Temperature (°C)
T1
Q3
1
2
1
L3
C6
Q1
C23
6
2
1
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16-Dec-14