Power Integrations introduced a new family of high-efficiency, active-PFC ICs called HiperPFS-2, for offline applications from 100W to 380W. They combine a boost PFC controller, driver, PFC MOSFET, PFC diode and protection circuits in one package, enabling exceptionally compact designs, ideal for small form-factor power supplies as used in mini-tower PCs, all-in-one PCs, game console adapters and TVs.
The HiperPFS-2 controller uses a variable-frequency CCM algorithm providing up to 97% efficiency across the load spectrum from 20% to 100%, and power factor greater than 0.9 at 20% load with 265VAC input for designs over 200W. Including line-connected sense elements, the new device contributes just 60mW to a typical high-power adapter’s 300mW no-load budget. Conducted and radiated EMI are minimized due to the integrated soft-recovery diode and short parasitic-inductance loop which results from the highly integrated, compact design.
Other key applications for HiperPFS-2 ICs include telecoms and industrial products such as blowers, motor drives and chargers.
