High Power SMPS in datacenters:
Evolution of high efficiency topologies for PFC
Dual Boost
Classic
HB TotemPole
TCM PFC
FB TotemPole
TCM PFC w/ GaN
TODAY´S BEST
TODAY/
TOMORROW
TOMORROW´S BEST
› Higher efficiency (>98%)
› Highest efficiency (>98%)
› Simpler
› Reduced part cont
› Higher efficiency (>99%)
› Higher efficiency (99%)
› 2-phases (high part count)
› Complex control
› 100 kHz+ operation
› Highest efficiency (99.5%)
› Suitable for 1 MHz+ operation
› Coupled with HF LLC for
extreme power density
(>>100 W/in
3
)
Targeting 99% A-Z
3d
17
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