Figure 9. Duty ratio feedforward control for PFC. The resulting control scheme is depicted in Figure 9. The feedforward duty ratio d FF is calculated by Equation 1. It is then added to the traditional ...

Figure 8 Duty-ratio feedforward control for PFC where adding the calculated d FF to the traditional average current-mode control output, d I, ... Closing the current loop of a totem-pole bridgeless ...

Wise Integration launches its first fully digital controller, enabling high-frequency operation up to 2 MHz for GaN ...

STMicroelectronics has announced a power-factor correction controller for the front-end of ac-dc PSUs from 600W to 6kW. Called STNRGPF02, it implements a two-channel interleaved boost topology as well ...

STMicroelectronics’ L6563 power factor correction controller integrates a broad range of functions to increase safety and efficiency while minimizing the need for external components ...

Fairchild Semiconductor brings power supply designers a boundary-conduction mode (BCM) interleaving power factor correction (PFC) controller that provides over 96 percent power ...