PFC with bridgeless converter

A Bridgeless PFC converter is a high-efficiency alternative to the traditional PFC circuit that removes the full-bridge rectifier

Basic Topology – Bridgeless Boost PFC

✅ Common Configurations:

1. Totem-Pole Bridgeless Boost (popular for digital control)
2. Conventional Bridgeless Boost

• Uses two boost converters, each active during one half of the AC cycle.

🔁 How It Works:

• In each half-cycle of the AC input:
• One leg of the converter is active (depending on polarity)
• The input current is shaped by controlling the switch duty cycle
• The output DC voltage is regulated, and input current is sinusoidal