Block diagram
Products - Power
Design challenges
- Totem-pole topology can achieve a power factor of 0.99
- High efficiency, high power factor, and low cost
- T1 and T2 could either be replaced by a PN diode or SiC (depending on voltage output) to be more cost effective.
- Alternatively they can be replaced by GaN FETs for more efficiency, with less switching losses and lower thermal dissipation
UM90003: 4 kW Bridgeless Totem-pole PFC evaluation board
The NXTTP4000W066 evaluation board is a bridgeless totem-pole Power-Factor-Correction (PFC) circuit. Using Nexperia power GaN FETs a very high-efficiency single-phase AC-DC converter is realized by using a diode-free power GaN FET bridge.
MOSFET and GaN FET Handbook
Drawing on over 20 years’ of experience, the MOSFET and GaN FET Application Handbook: A Power Design Engineer’s Guide brings together a comprehensive set of learning and reference materials relating to the use of MOSFETs and GaN FETs in real world systems.
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