Desktop PC Power Supply
Common desktop power supplies addressing the clone market use an half bridge driving two power bipolars. The control is made up of a single chip solution that combines pulse width modulation and housekeeping to meet cost target. The following diagram shows a wide range of products for such power supplies.
AN4149: Designing a CCM PFC pre-regulator based on the L4984
AN4163: EVL4984-350W: 350 W CCM PFC pre-regulator with the L4984