Power Integrations HiperPFS™-4 PFC Controllers

The HiperPFS-4 uses advanced digital techniques for line monitoring, line feed-forward scaling, and power factor enhancement; while using analog techniques for the core controller in order to maintain extremely low no-load power consumption. The HiperPFS-4 also features an integrated non-linear error amplifier for enhanced load transient response, a user programmable Power Good (PG) signal as well as user selectable power limit functionality.

The HiperPFS-4 PFC Controllers include a comprehensive protection features, such as UV, OV, brown-in/out, and hysteretic thermal shutdown. The HiperPFS-4 devices also provide cycle-by-cycle current limit and Safe Operating Area (SOA) protection of the power MOSFET, output power limiting for overload protection, and pin-to-pin short-circuit protection.

The Variable Frequency Continuous Conduction Mode operation (VF-CCM) minimizes switching losses by maintaining a low average switching frequency, while modulating the switching frequency in order to suppress EMI, the traditional challenge with continuous conduction mode solutions. Systems using HiperPFS-4 typically reduce the total X and Y capacitance requirements of the converter, the inductance of both the boost choke and EMI noise suppression chokes, thereby reducing overall system size and cost. Additionally, HiperPFS-4 devices dramatically reduce component count and board footprint while simplifying system design and enhancing reliability, when compared with designs that use discrete MOSFETs and controllers. The innovative variable frequency, continuous conduction mode controller enables the HiperPFS-4 to realize all of the benefits of continuous conduction mode operation while leveraging low-cost, small, simple EMI filters.

The HiperPFS-4 is offered in eSIP-16G (L Package), eSIP-16D (H Package), and InSOP-24B (C Package). The InSOP-24B package design eliminates the need for a heat sink, and offers a low surface-mounted profile ideal for volume constrained applications.