- #1
smk037
- 68
- 1
I'm trying to understand what this IC is doing and what the "typical application" circuit is doing
http://www.onsemi.com/pub_link/Collateral/NCP1392-D.PDF
It looks to me like this is the basic idea. AC comes in, PFC is done, signal is rectified so that a DC signal is coming into the IC. Then, the IC converts back into AC, but this time at a higher frequency, driven through an isolation transformer and then rectified AGAIN, but this time at a lower ripple current due to the higher frequency.
Do I have this correct? If that is the case, what is the purpose of the feedback loop, since it looks like it varies the frequency of the driver, not the output voltage?
Thanks,
http://www.onsemi.com/pub_link/Collateral/NCP1392-D.PDF
It looks to me like this is the basic idea. AC comes in, PFC is done, signal is rectified so that a DC signal is coming into the IC. Then, the IC converts back into AC, but this time at a higher frequency, driven through an isolation transformer and then rectified AGAIN, but this time at a lower ripple current due to the higher frequency.
Do I have this correct? If that is the case, what is the purpose of the feedback loop, since it looks like it varies the frequency of the driver, not the output voltage?
Thanks,