eem2am
Banned
Hello,
We have designed an offline SMPS.
Output is 50V and 4 Amps Max (200Watts)
Input is 85VAC to 265VAC
It is a boost PFC followed by a Buck.
--------------------------------------------
I want to test it at various temperatures from -10C to 80C.
---------------------------------------------
Muct i test it at lots of different load levels?
eg ...
20% load
40% load
60% load
80% load
100% load
....at each different temperature?
...at lots of different input voltage levels?
-----------------------------------
or can i just check it on................
Minimum Line (85VAC) , Max Load at each temperature &
Minimum Line (85VAC) , Load switching from 0% to 100% at ~1 Hertz
Maximum Line (265VAC), Max load at each temperature &
Maximum Line (265VAC), Load switching from 0% to 100% at ~1 Hertz
---------------------------------------
I had thought that the worst case for the feedback loop was minimum line and maximum load ?
...and basically if you have checked that there is no need to check at intermediate loads and lines (though of course max line must be checked)
---------------------------------------------
We have designed an offline SMPS.
Output is 50V and 4 Amps Max (200Watts)
Input is 85VAC to 265VAC
It is a boost PFC followed by a Buck.
--------------------------------------------
I want to test it at various temperatures from -10C to 80C.
---------------------------------------------
Muct i test it at lots of different load levels?
eg ...
20% load
40% load
60% load
80% load
100% load
....at each different temperature?
...at lots of different input voltage levels?
-----------------------------------
or can i just check it on................
Minimum Line (85VAC) , Max Load at each temperature &
Minimum Line (85VAC) , Load switching from 0% to 100% at ~1 Hertz
Maximum Line (265VAC), Max load at each temperature &
Maximum Line (265VAC), Load switching from 0% to 100% at ~1 Hertz
---------------------------------------
I had thought that the worst case for the feedback loop was minimum line and maximum load ?
...and basically if you have checked that there is no need to check at intermediate loads and lines (though of course max line must be checked)
---------------------------------------------