Power Integrations Unveils High-Efficiency Quasi-Resonant PFC IC with 750 V GaN Switch

Rhea-AI Summary

Power Integrations (NASDAQ: POwi) has launched the HiperPFS-5 family of power-factor-correction ICs, featuring an integrated 750 V PowiGaN gallium-nitride switch. These ICs achieve efficiency rates up to 98.3% and can handle up to 240 W without a heat sink. They offer a power factor exceeding 0.98, making them suitable for high-power USB PD adapters, TVs, and appliances. Notable features include low no-load power consumption of 38 mW and robustness in unstable voltage conditions, capable of operating at 460 VAC during line swells.

Positive

• Launch of HiperPFS-5 power-factor-correction ICs with efficiency up to 98.3%.
• Supports up to 240 W power without heat sinks, making it ideal for consumer electronics.
• Power factor exceeds 0.98, ensuring compliance with rigorous efficiency standards.
• Low no-load power consumption of just 38 mW, enhancing energy efficiency.

Negative

• None.

HiperPFS-5 ICs enable compact, efficient power-factor stage for ultra-fast adapters, consumer electronics, computer and appliance power supplies

HOUSTON--(BUSINESS WIRE)-- APEC 2022 – Power Integrations (Nasdaq: POWI), the leader in high-voltage integrated circuits (ICs) for energy-efficient power conversion, today announced the HiperPFS™-5 family of power-factor-correction (PFC) ICs with an integrated 750 V PowiGaN™ gallium-nitride switch. With 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. HiperPFS-5 ICs are ideal for high-power USB PD adapters, TVs, game consoles, all-in-one computers and appliances.

HiperPFS-5 ICs enable compact, efficient power-factor stage for ultra-fast adapters, consumer electronics, computer and appliance power supplies (Photo: Business Wire)

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.”

The capacitors and inductors used in power supplies generate a phase change between current and voltage, causing losses in the power lines and potentially disrupting other equipment connected to the AC mains. Many countries require power supplies over 75 W to adjust for this effect with so-called power factor correction, or PFC. While there are many PFC solutions available, HiperPFS-5 ICs with PowiGaN technology and a quasi-resonant (QR) control scheme represent 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. The variable frequency engine allows the reduction of boost inductor size by more than 50 percent compared to conventional critical-conduction-mode (CRM) boost PFC circuits. 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. Exposed cooling pads featured in the package are at source potential, providing effective cooling and simplifying the EMI solution. Digital line-peak-voltage detection ensures robust performance, even in the presence of distorted input from uninterruptable power supplies or generators.

Availability & Resources

Reference design DER-672 is available to download for designers wishing to evaluate the HiperPFS-5 quasi-resonant PFC controller ICs. Devices are priced at $2.34 in 10,000-unit quantities. For further information contact a Power Integrations sales representative or visit power.com.

About Power Integrations

Power Integrations, Inc. is a leading innovator in semiconductor technologies for high-voltage power conversion. The company’s products are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications ranging from milliwatts to megawatts. For more information, please visit www.power.com.

Power Integrations, PowiGaN, HiperPFS, HiperLCS, InnoSwitch, CAPZero, InSOP, power.com and the Power Integrations logo are trademarks or registered trademarks of Power Integrations, Inc. All other trademarks are the property of their respective owners.

View source version on businesswire.com: https://www.businesswire.com/news/home/20220321005234/en/

Media Contact

Linda Williams

Power Integrations

(408) 414-9837

linda.williams@power.com

Press Agency Contact

Nick Foot

BWW Communications

+44-1491-636-393

nick.foot@bwwcomms.com

Source: Power Integrations, Inc.

FAQ

What is the efficiency rating of Power Integrations' HiperPFS-5 ICs?

The HiperPFS-5 ICs achieve an efficiency rating of up to 98.3%.

What is the maximum power output of the HiperPFS-5 ICs?

The HiperPFS-5 ICs can deliver up to 240 W without requiring a heat sink.

What power factor do the HiperPFS-5 ICs provide?

The HiperPFS-5 ICs provide a power factor greater than 0.98.

At what voltage can the HiperPFS-5 ICs operate?

The HiperPFS-5 ICs can operate continuously at up to 460 VAC during line swells.