eem2am
Banned
rms input power
Hello,
I am writing with regard to calculating the input power to an SMPS,
-that is calculating the input power from the DC input voltage and current.
The problem i have is
For a continuous mode boost converter PFC, they use V(rms) * I(rms)
...but for say a discontinuous mode flyback, they use V(average)* I(average)
I wonder when to use average and when to use rms ?
Here is a picture of the input power calculation dilemma.
I am very grateful for any replies.
Hello,
I am writing with regard to calculating the input power to an SMPS,
-that is calculating the input power from the DC input voltage and current.
The problem i have is
For a continuous mode boost converter PFC, they use V(rms) * I(rms)
...but for say a discontinuous mode flyback, they use V(average)* I(average)
I wonder when to use average and when to use rms ?
Here is a picture of the input power calculation dilemma.
I am very grateful for any replies.