Figure 19.
GUI power metering calibration window
To calibrate the PFC mode parameters:
Procedure
Step 1.
Set a load to make the systems enter the transition mode (near nominal power, e.g. 150 W)
Step 2.
Enter the associated reference power read on a precision power meter in the
Ref Pwr
box
Step 3.
Press the
Normalize
button.
The GUI automatically computes and updates the correction factor associated to the current PFC
operating mode.
The power displayed in the GUI must be equal to the reference power.
This operation has to be repeated for every PFC mode (DCM, Valley#1/2/3)
The other parameters (PAM Correction, Tdel Correction, Vmains) have to be tuned manually.
UM2342
Metering calibration
UM2342
-
Rev 1
page 20/57
