Power Integrations Presents Quasi-Resonant PFC ICs
HiperPFS-5 ICs are ideal for high-power USB PD adapters, TVs, game consoles, all-in-one computers and appliances.
Power Integrations has introduced HiperPFS-5 family of power-factor-correction (PFC) ICs with an integrated 750 V PowiGaN gallium-nitride switch.
With an efficiency of up to 98.3 percent, the new ICs deliver up to 240 W without a heat sink and can achieve a power factor of better than 0.98.
Commented Edward Ong, Senior Product Marketing Manager at Power Integrations: “With OEMs and after-market suppliers racing to create the fastest, smallest, most versatile USB PD chargers for mobile devices, HiperPFS-5 ICs give engineers a critical advantage. We have combined our proprietary PowiGaN switch with a quasi-resonant, variable-frequency discontinuous mode boost PFC topology. By pairing HiperPFS-5 ICs with our new HiperLCS™2 chipset or our InnoSwitch™4-CZ active-clamp flyback ICs, designers can easily beat even the most aggressive efficiency regulations while cutting the bill of materials by half and achieving extremely attractive form factors for ultra-fast chargers.”
HiperPFS-5 ICs are ideal for high-power USB PD adapters, TVs, game consoles, all-in-one computers and appliances.
While there are many PFC solutions available, HiperPFS-5 ICs with PowiGaN technology and a quasi-resonant (QR) control scheme represents the pinnacle of the art and science of off-line power quality enhancement.
HiperPFS-5’s innovative QR discontinuous conduction mode (DCM) control technique adjusts the switching frequency across output load, input line voltage and input line cycle. QR DCM control ensures low switching losses and permits the use of a low-cost boost diode.
Low switching and conduction losses—which are further reinforced by the PowiGaN switch—together with lossless current sensing, mean that HiperPFS-5 ICs offer high efficiency across the entire load range, with efficiency rising as high as 98.3 percent.
HiperPFS-5 ICs provide a PF higher than 0.98 at full load. At light loads an innovative power-factor-enhancement (PFE) feature compensates for input filter capacitance, maintaining a high PF of 0.96 even at 20 percent load. No-load power consumption is just 38 mW.
Other benefits accrue due to the robust 750 V PowiGaN switch. In many locations worldwide the mains’ power can be highly unstable, often leading to over-voltage failure of power supply components.
HiperPFS-5 ICs maintain a high-power factor up to 305 VAC and can operate continuously at up to 460 VAC during line swells.
Additionally, HiperPFS-5 ICs incorporate Power Integrations’ automatic X-capacitor discharge (CAPZero™) function, including the required redundant pins to meet safety regulations, and high-voltage self-start-up—all in a low-profile, InSOP-T28F SMD power package.
