FSFR-XS Series
Description
The FSFR−XS series includes highly integrated power switches
designed for high−efficiency half−bridge resonant converters.
Offering everything necessary to build a reliable and robust resonant
converter, the FSFR−XS series simplifies designs while improving
productivity and performance. The FSFR−XS series combines power
MOSFETs with fast−recovery type body diodes, a high−side
gate−drive circuit, an accurate current controlled oscillator, frequency
limit circuit, soft−start, and built−in protection functions. The
high−side gate−drive circuit has common−mode noise cancellation
capability, which guarantees stable operation with excellent noise
immunity. The fast−recovery body diode of the MOSFETs improves
reliability against abnormal operation conditions, while minimizing
the effect of reverse recovery. Using the zero−voltage−switching
(ZVS) technique dramatically reduces the switching losses and
significantly improves efficiency. The ZVS also reduces the switching
noise noticeably, which allows a small−sized Electromagnetic
Interference (EMI) filter.
The FSFR−XS series can be applied to resonant converter
topologies such as series resonant, parallel resonant, and LLC resonant
converters