{972i} PFC section in LG Inverter AC outdoor unit board

in this video number {972i} PFC section in LG Inverter AC outdoor unit board. I explained voltage booster section and PFC section in the LG inverter outdoor unit board. it is using A20114ASP or R2A20114AFP/ASP, PFC controller IC and fan3227 igbt low side driver IC. it receives power from low voltage power supply section. BFC controller IC receives power on command from microcontroller and it measures input ac voltage also checks voltage on DC rate and then it monitors the flowing current in the igbts. when it starts to drive the gates of igbts. igbt will switch and this will create a pulse in the inductor reactor and it provides a boost in the provided voltage from the bridge rectifier if there is any error any fault it will create error fault which will reach to microcontroller and microcontroller will display PFC error codes in the indoor unit
it is used in ARUN040GSS0, ARUN050GSL0, CRUN040GSS0 models, LG 4 ton, 5 ton dc inverter ac outdoor unit board EAX64913701 ebr758794.
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