Figure 41.
PFC tuning: THD improver tab
11.4.4
Step 2: delta pin calibration
The second step is to calibrate delta pin correction factor when changing from on mode to the other.
To compute the delta pin calibration, the GUI:
•
disables PFC mode change on the basis of the frequency and power values
•
forces the PFC mode and records the associated estimated power
•
repeates the operation for 2x load current and 2x AC input voltage
•
computes the delta pin correction factor
UM2342
Step by step calibration example
UM2342
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Rev 1
page 35/57
