The PFC control IC has a Brown out protection within in addition to the basic function.
When the MULT terminal voltage falls, the IC becomes a stand-by mode and contributes to the standby power requirement cutback of the system.
The IC controls AC input current as the AC input voltage and the capacitor charging current are similar.
It is camouflaging this as the load seems to be " resistance " for the AC electric power system.
Also, it gets to lose the rush of the capacitor charging current which generates a higher harmonic.
|CRM||Critical Conduction Mode (TB6819AFG)
･Suitable for power levels below 200 W
･Relatively simple circuit
|Product||File Type||PSpice Download||Type||Features||Publish Date|
|TB6819A||zip||(49KB)||PFC Controller IC||Critical conduction mode (CRM) PFC controller IC||2015/08/25|
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