The AC-DC Converters category covers the MPS Regulators and Controllers for Isolated and Non Isolated AC_DC applications including controllers for Power Factor Correction (PFC). AC-DC topologies that we support include PFC Boost, Flyback, Forward, Half Bridge LLC and Synchronous Rectification for Flyback as well as Half Bridge LLC Converters. If the topic concerns one of these devices then use this category. Forum topics include device operation, component selection, converter theory, or other AC/DC questions.
The AC-DC Converters category covers the MPS Regulators and Controllers for Isolated and Non Isolated AC_DC applications including controllers for Power Factor Correction (PFC). AC-DC topologies that we support include PFC Boost, Flyback, Forward, Half Bridge LLC and Synchronous Rectification for Flyback as well as Half Bridge LLC Converters. If the topic concerns one of these devices then use this category. Forum topics include device operation, component selection, converter theory, or other AC/DC questions.
I am planning to use HF500-30 IC in one of my design. How to determine the Rsense value on source pin.
- For calculating Rsense, first you need to calculate the Ton ( equations 7 and 8 in Datasheet) . Then use Sramp ( given on page 6 of datasheet) as 25mV/V and please use VILIM as 1V ( on page 6 of Datasheet) . The according to equation 14 , Vsense = (0.95VILIM) – ( Sramp Ton) . Then use equation 8 and 9 to calculate Ipeak. Assume Kp=0.8. Now you have calculated Vsense and Ipeak. Use that to calculate Rsense using equation 15 which is Rsense = Vsense/Ipeak.
thanks for response. Currently In our design HF01B02 IC is used and datasheet of this IC doesn’t shows any Ipeak calculation and looks Vsense is fixed to 1V as per page 12. Vsense => VFB/3.3V.
Now changing to HF500-30 device so your input is greatly appreciated.