Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Bridgeless boost pfc is not at all common…..because if it is bridgeless, then (usually) the output of the boost pfc has to eventually be rectified…..which would mean using a bridge……but “bridgeless” is wanted so no bridge is used, and in fact, the rectification is achieved by using the rectifier of the downstream PWM stage……and in fact, to make things easier…….you use the downstream pwm stage as actually a single stage pfc……..eg the single stage PFC’d isolated cuk converter as used by Tesla motors…….or, as “said to be used” by Tesla motors.
Anyway, the problem with that is that you end up with severe noise issues when doing the switching, if you look at the bridgelss pfc’d isolated cuk converter you see what I mean……it needs a very special regenerative snubber
1)Can the EMI noise be reduced if try interleaving in the bridgeless configuration i.e. a bridgeless interleaved boost converter??
2)Can the line voltage be sensed directly in a bridgeless interleaved boost converter with out an opto coupler or a t/f
Bridgeless boost pfc is not at all common…..because if it is bridgeless, then (usually) the output of the boost pfc has to eventually be rectified…..which would mean using a bridge……but “bridgeless” is wanted so no bridge is used, and in fact, the rectification is achieved by using the rectifier of the downstream PWM stage……and in fact, to make things easier…….you use the downstream pwm stage as actually a single stage pfc……..eg the single stage PFC’d isolated cuk converter as used by Tesla motors…….or, as “said to be used” by Tesla motors.
Anyway, the problem with that is that you end up with severe noise issues when doing the switching, if you look at the bridgelss pfc’d isolated cuk converter you see what I mean……it needs a very special regenerative snubber