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Power Integrations’ HiperLCS-2 Chipset Boosts LLC Converter Efficiency, Slashes Component Count by 40 Percent
Surface-mount LLC chipset delivers 250 W with over 98 percent efficiency and no heatsink; no-load consumption is less than 50 mW

Power Integrations (Nasdaq: POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced the energy-saving HiperLCS™-2 chipset, a new IC family that dramatically simplifies the design and manufacture of LLC resonant power converters. The new dual-chip solution features an isolation device with a high-bandwidth LLC controller, synchronous rectification driver and FluxLink™ isolated control link, alongside a separate half-bridge power device utilizing Power Integrations’ unique 600 V FREDFETs with lossless current sensing and high- and low-side drivers. Both devices are housed in low-profile InSOP™-24 packages. This highly integrated, energy-efficient architecture eliminates heatsinks and reduces component count by up to 40 percent compared to discrete designs.

Edward Ong, senior product marketing manager at Power Integrations said: "Resonant converters using separate controllers and discrete MOSFETs can be incredibly bulky and are notoriously difficult to manufacture due to their complexity and high component count. We have applied our advanced FREDFETs and magneto-inductive FluxLink technology to the LLC topology, yielding 98 percent efficiency and reducing component count by 40 percent, while eliminating bulky heatsinks and unreliable optocouplers. This enables designers to create compact adapters and open-frame power supplies for TVs, monitors with USB PD ports, all-in-one PCs, game consoles and battery chargers for power tools and e-bikes.”

Resonant converters are typically used wherever an application demands a level of efficiency unachievable with single-switch topologies such as flyback converters. The HiperLCS-2 chipset leverages Power Integrations’ high-speed FluxLink feedback mechanism to avoid the compromises normally associated with the LLC topology, permitting designers to quickly and consistently implement designs with high performance, wide operating range and low component count.

Power supply designs based on the new HiperLCS-2 can achieve no-load input power of less than 50 mW at 400 VDC input and provide a continuously regulated output, easily complying with the world's most stringent no-load and standby efficiency regulations. HiperLCS-2 devices operate at high efficiency across the load range with dissipation so low that direct heat transfer through the FR4 PCB is all that is required, eliminating heatsinks in adapter designs up to 220 W continuous output with up to 170 percent peak power capability. All HiperLCS-2 family members feature self-powered start-up and provide the start-up bias for a PFC stage using the company’s HiperPFS™ ICs. Secondary-side sensing provides less than one percent regulation accuracy across line and load range and across production variations. The use of Power Integrations’ FluxLink technology for safety-isolated high-speed digital feedback control provides much faster transient response and far superior long-term reliability compared to optocouplers.

Availability & Resources

A reference design, DER-672, is available to download for designers who want to evaluate HiperLCS-2 ICs. Pricing for the HiperLCS-2 starts at $3.20 per chipset in 10,000 unit quantities. For further information, please contact a Power Integrations sales representative.

2022042701 / 27.04.2022 / Electronic-components / Power Integrations /

Power Integrations Launches SCALE EV: Automotive-Qualified IGBT/SiC Module Driver Family; Targets Bus, Truck and Con-Ag EVs
Compact driver board features reinforced isolation, ASIL B/C certification

Power Integrations’ HiperLCS-2 Chipset Boosts LLC Converter Efficiency, Slashes Component Count by 40 Percent
Surface-mount LLC chipset delivers 250 W with over 98 percent efficiency and no heatsink; no-load consumption is less than 50 mW

Power Integrations Introduces Industry’s First Automotive-Qualified High-Voltage Switcher ICs with 1700 V SiC MOSFET
Expanded InnoSwitch3 family slashes component count and boosts efficiency in EV and industrial applications

Power Integrations’ New InnoSwitch3-TN ICs Slash Energy Waste in Appliance Power Supplies by 75%
Beyond the buck regulator: Newest InnoSwitch3 IC family delivers simplicity, flexibility, and industry-leading efficiency in high-output-current designs

Power Integrations Releases InnoSwitch3-PD Reference Design for Ultra-Compact USB Type C, PD + PPS Adapter
DER-937 leverages highly integrated boost PFC and GaN flyback switcher ICs to implement 100 W USB PD charger using only 117 components

Power Integrations Introduces the InnoSwitch3-PD Family of Flyback Switcher ICs with Built-In USB PD Controller
A fully integrated charger solution combines USB PD, PPS, PowiGaN and FluxLink to maximize efficiency and slash component count in adapters and chargers

Power Integrations’ New SCALE-iFlex LT Plug-and-Play Gate Driver Improves EconoDUAL IGBT Module Performance by 20%
New gate driver eliminates one in six modules; substantially reduces system complexity

Power Integrations Introduces SCALE-iFlex Single Plug-and-Play Gate Drivers for “New Dual” Modules
SCALE-2 technology optimizes footprint, improves efficiency, performance and reliability of power inverters and converters to 3300 V

Automotive-Qualified Qspeed Silicon Diodes Feature Lowest Qrr for Efficient, High-Switching-Speed Designs
600 V 12 A diodes can replace SiC parts in automotive applications

Power Integrations Incorporates Lossless Zero-Cross Detection and X-Capacitor Discharge into New LinkSwitch-TNZ Offline Switcher ICs
LinkSwitch-TNZ compact switcher reduces component count, addresses smart home and appliance applications

Power Integrations Introduces InnoSwitch4-CZ Flyback Switcher ICs for a New Class of Mobile Charging Devices
Anker selects zero voltage switching InnoSwitch4-CZ ICs with PowiGaN technology for new ultra-compact 30, 45 & 65 W USB-C Nano II charger series

Power Integrations Introduces Software for Precise Control and Tuning of BridgeSwitch ICs in Single-Phase BLDC Motor Drives
New Motor-Expert IEC6730 Class A-ready software tackles new energy efficiency regulations for appliances

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