Fairchild Semiconductor has introduced the FAN9612 two-phase BCM (boundary-conduction-mode) PFC (power-factor-correction) controller for 100 to 1000W ... The device also provides for input voltage ...

Figure 9. Duty ratio feedforward control for PFC. An enhanced version, which combines the regular duty ratio feedforward and the hardware digital filter of a digital controller, such as the UCD3138, ...

STMicroelectronics has announced a power-factor correction controller for ... firing angle until power-up is complete. Both controllers support programmable phase shedding in the boost converter, load ...

Fairchild Semiconductor brings power supply designers a boundary-conduction mode (BCM) interleaving power factor correction (PFC) controller ... Input voltage feed-forward function that minimizes ...

STMicroelectronics’ L6563 power factor correction controller integrates ... of the voltage regulation control loop. In addition, the IC provides input voltage feed-forward, tracking-boost ...