SLUAAV0 April   2024 UCC27301A-Q1 , UCC27311A-Q1 , UCC27517 , UCC27517A , UCC27517A-Q1 , UCC27524 , UCC27614 , UCC27624 , UCC27624-Q1 , UCC27710 , UCC27712 , UCC27712-Q1 , UCC27714 , UCC44273 , UCC57108-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2PFC Stage
    1. 2.1 Boost PFC
    2. 2.2 Interleaved Boost PFC
  6. 3Motor Drive Stage
  7. 4DC/DC Stage
    1. 4.1 Synchronous Buck Converter
    2. 4.2 Flyback Converters
  8. 5Summary
  9. 6References

2 PFC Stage

In HVAC systems using AC power, a high-power factor is a key requirement. Power factor is the ratio of real power over apparent power, and apparent power is a combination of real and reactive power. The load only consumes real power; therefore, it is critical that the losses from reactive power are minimized as much as possible. The lower the loss, the more efficient HVAC systems can be, and PFCs are used to maximize the power factor ratio.