Part Number:UCC28070
I want to build an interleaved CCM bridgeless PFC shown in the figure.
but I don't know how to sense the input ac voltage. Because the neutral line is connected to GND in the positive line cycle, but it is connected to the Vo in the negative line cycle.
So conventional resistor divide method can't be used directly. Maybe resistor divide method with rectified diode bridge can't be used neither.
I don't have a good idea now. could you pls help me? thanks!!!
