STMicroelectronics A 200 W ripple-free input current PFC pre-regulator with the L6563S EVL6563S-200ZRC EVL6563S-200ZRC Data Sheet
Product codes
EVL6563S-200ZRC
AN3180
Conclusions
Doc ID 17273 Rev 1
27/39
7 Conclusions
The ripple-steering technique, with its ability to reduce an inductor ripple current
theoretically to zero, has been discussed and its theoretical base has been outlined. The
construction of a coupled inductor is addressed and a practical design guide given to enable
its successful implementation.
theoretically to zero, has been discussed and its theoretical base has been outlined. The
construction of a coupled inductor is addressed and a practical design guide given to enable
its successful implementation.
A practical application of the ripple-steering technique has been shown: it refers to a
Transition-mode controlled PFC pre-regulator where the technique has been used to
minimize the input ripple current, which is a major limitation to the use of this simple and
efficient topology at higher power levels.
Transition-mode controlled PFC pre-regulator where the technique has been used to
minimize the input ripple current, which is a major limitation to the use of this simple and
efficient topology at higher power levels.
The experimental results have shown that the ripple-steering technique is very effective in
reducing the input ripple current and that considerable savings can be achieved in the
differential-mode input EMI filter, with the positive side effect of minimizing the loss due to
the filter itself.
reducing the input ripple current and that considerable savings can be achieved in the
differential-mode input EMI filter, with the positive side effect of minimizing the loss due to
the filter itself.