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Power Integrations Combines Programmability, High Efficiency and Small Form Factor in New Zero-Voltage-Switching Power-Supply ICs
InnoSwitch4-Pro family of flyback switchers enable over 95 percent efficient, compact, USB PD and Universal Fast Charging Specification adapters up to 220 W

Power Integrations  announced the InnoSwitch™4-Pro family of digitally controllable, off-line CV/CC Zero Voltage Switching (ZVS) flyback ICs, which substantially reduce the size of power adapters. Incorporating a robust PowiGaN gallium-nitride primary switch and steady-state switching frequency of up to 140 kHz, the highly integrated devices reduce the component count and PCB area required for ultra-compact adapters for cellphone, notebook, tablet and multi-port accessories.

“InnoSwitch4-Pro ICs interface seamlessly with Power Integrations’ ClampZero™ family of active clamp ICs to achieve ZVS in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM),” stated Aditya Kulkarni, product marketing manager at Power Integrations. “ZVS, combined with our PowiGaN™ technology, virtually eliminates switching losses. Efficiency exceeds 95 percent, which enables designers to eliminate the heat sinks, spreaders and potting materials typically required for thermal management."

Further size reduction of the adapter can be achieved by the use of a MinE-CAP™ device in combination with InnoSwitch4-Pro and ClampZero ICs. Based also on PowiGaN technology, MinE-CAP ICs enable input capacitance size reduction of approximately 40 percent.

Capable of delivering up to 220 W, InnoSwitch4-Pro ICs combine a 750 V PowiGaN primary switch, controller, FluxLink™ reinforced isolation feedback link for secondary-side control, I2C interface, active clamp drive and synchronous rectification in a compact InSOP™-28 package. The high level of integration greatly simplifies the development and manufacturing of fully programmable, highly efficient power supplies. These programmable flyback ICs in combination with ClampZero and MinE-CAP companion devices enable the ultra-compact and slim form factors highly desired by both OEM accessory and aftermarket USB PD and Universal Fast Charging Specification (UFCS) adapters. UFCS is the new standard released by the China Communications Standards Association.

A unique control algorithm is employed by the InnoSwitch4-Pro ICs to enable ZVS in both DCM and CCM. When paired with the ClampZero IC, the algorithm allows for higher-frequency operation without a corresponding drop in efficiency. InnoSwitch4-Pro also supports quasi-resonant switching in DCM and CCM when used as a standalone product. DCM-only operation can be selected to reduce SR FET voltage stress. The new ICs also feature an optimized command set to reduce I2C traffic.

InnoSwitch4-Pro flyback switcher ICs provide exceptional CV/CC accuracy, independent of external components, and consume less than 30 mW no-load while offering line-sensing and comprehensive protection features. Devices are fully protected featuring auto-restart or latching fault response for output overvoltage and undervoltage protection, multiple output undervoltage fault thresholds, latching or hysteretic primary over-temperature protection, and output bus switch short-circuit protection.

Availability & Resources
Two reference designs, DER-960 (100 W), RDK-942 (65 W), are available for designers wishing to evaluate the InnoSwitch4-Pro IC. Devices are priced at $1.85 for 10,000-unit quantities. For further information contact a Power Integrations sales representative or one of the company’s authorized worldwide distributors: Digi-Key, Farnell, Mouser and RS Components, or visit power.com. For more information, watch this video.

2022113002 / 30.11.2022 / Electronic-components / Power Integrations /

Power Integrations Combines Programmability, High Efficiency and Small Form Factor in New Zero-Voltage-Switching Power-Supply ICs
InnoSwitch4-Pro family of flyback switchers enable over 95 percent efficient, compact, USB PD and Universal Fast Charging Specification adapters up to 220 W

Power Integrations Debuts Support for Planar Magnetics in PI Expert Power Supply Design Tool
Software automatically generates a planar transformer design with full electrical specification and build documentation in just five minutes

Power Integrations Launches PowerPros Live Video Application-Engineering Support
Solve design challenges in real-time, 24 hours a day, six days a week

Power Integrations Delivers AEC-Qualified Buck Switcher IC with 850 mA Output for Low-Part-Count Automotive PSUs
LinkSwitch-TN2Q supports 30-550 VDC input with integrated system-level protection

Power Integrations Bundles New Three-Phase BLDC Control Software into Motor-Expert Suite for BridgeSwitch IC Family
Hardware-Software Solution for Three-Phase BLDC Motor Inverters Enables Greater Than 98 Percent Efficiency, Saves PCB Space and Speeds Time-to-Market

Power Integrations Expands InnoSwitch4-CZ Integrated Switcher Family to 220 W
New high-voltage GaN switches boost efficiency to 95 percent, yielding ultra-compact USB PD 3.1 adapters

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

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INDUSTRIAL PRESSURE TRANSDUCERS FROM CYNERGY3


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SMTconnect, 9.-11.5.2023, Nuremberg, DE
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sps Italia, 13.-15.5.2023, Fiere di Parma, IT
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DistribuTECH, 11.2.-13.2.2025, Dallas, TX

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