Power Integrations launches high-efficiency PFC IC product family with integrated controller/MOSFET

electronica 2010, MUNICH, GERMANY: Power Integrations has launched HiperPFS, a family of power factor correction (PFC) controllers with integrated high-voltage power MOSFETs.

HiperPFS devices leverage an innovative control scheme that optimizes efficiency at light load levels. Additionally, compared with designs that use discrete MOSFETs and controllers, HiperPFS devices dramatically reduce component count and board footprint while simplifying system design and enhancing reliability. HiperPFS devices come in an extremely compact, low-profile eSIP package and are suitable for PFC applications from 75 W to 1 kW.

Regulatory moves in Europe, the United States, and elsewhere mandate high power factor for many electronic products with power requirements over 75 W and for lighting products over 5 W. These rules are combined with numerous application-specific standards that require high power supply efficiency across the entire load range, from full load to as low as 10 percent load.

High efficiency at light load is a challenge for traditional PFC approaches in which fixed MOSFET switching frequencies cause fixed switching losses on each cycle, even at light loads.

HiperPFS simplifies compliance with new and emerging energy-efficiency standards over a broad market space in applications such as PCs, LCD TVs, notebooks, appliances, pumps, motors, fans, printers, and LED lighting.

Power Integrations’ innovative variable-frequency continuous conduction mode of operation (VF-CCM) minimizes switching losses by maintaining a low average switching frequency, while also varying the switching frequency in order to suppress EMI, the traditional challenge with continuous-conduction-mode solutions. Systems using HiperPFS typically save a core size on both the boost choke and common-mode EMI noise suppression choke, reducing overall system size and cost.