Modern Power Electronics and Drivers

Totem-Pole PFC Design: Achieving 0.99 Power Factor at 3kW Discover how to design high-efficiency totem-pole power factor correction circuits capable of delivering 0.99+ power factor at 3kW power levels. This comprehensive 2025 guide explores the latest GaN-based topologies, advanced control strategies, and practical implementation techniques that enable >99% efficiency while meeting stringent harmonic standards like IEC 61000-3-2. Perfect for server PSUs, EV chargers, and industrial power systems requiring premium power quality. 🚀 The Totem-Pole PFC Revolution in High-Power Applications Traditional boost PFC topologies are being rapidly displaced by totem-pole configurations that leverage wide-bandgap semiconductors to achieve unprecedented performance levels. The key advantages driving this shift include: Reduced component count - Eliminates input bridge rectifier diodes Higher efficiency - >99% achievable with GaN technology Improved thermal perform...