Power Integrations’ dynamically configurable off-line switcher IC supports USB PD 3.0 + PPS

March 7, 2018

2 min read

San Antonio, TX. Power Integrations today at APEC announced the release of its InnoSwitch3-Pro family of configurable off-line CV/CC and CP flyback switcher ICs. Capable of delivering up to 65 W and achieving up to 94% efficiency across line and load conditions, the new devices permit precise, dynamically adjustable control of voltage (10-mV step) and current (50-mA step) via a simple 2-wire I²C interface. Devices may be paired with a microcontroller or take inputs from the system CPU to control and monitor the off-line power supply. Applications include virtually any rapid-charging protocol, including USB Power Delivery (PD) 3.0 + PPS, Quick Charge 4/4+, AFC, VOOC, SCP, FCP and other industrial and consumer battery chargers, dimmable LED ballast drivers, and field-configurable industrial power supplies.

InnoSwitch3-Pro power-conversion ICs include a microprocessor V_CC supply—eliminating the need for an external LDO to power the microcontroller; also included is an n-channel FET driver, which may be used to enable or disable the main power output. Together with integrated bus voltage, current and fault-reporting telemetry, and dynamically configurable protection functions such as OTP, line OV/UV, output OV/UV, and short-circuit, the BOM count for a sophisticated offline power supply is significantly reduced and design complexity is dramatically simplified.

Commented Shyam Dujari, director of product marketing for Power Integrations: “The AC/DC power-conversion market is undergoing rapid transition with system designers needing a programmable solution that can adapt to various fast-charging protocols including therecentl y completed USB PD 3.0 + PPS specification.” He further added, “The ability to precisely control the output voltage and current of a power supply over a wide range is also useful for designers of specialized applications with smaller production runs, as they can easily configure a single board design for multiple product SKUs using software either at manufacture or during installation.”

New InnoSwitch3-Pro ICs employ Power Integrations’ high-speed digital communications technology, FluxLink, plus synchronous rectification, quasi-resonant switching, and a precise secondary-side feedback sensing and feedback control circuit. Devices are CQC-certified, UL-recognized and TUV (EN60950)-approved to bridge the isolation barrier; the products’ InSOP-24D package also provides a low-profile, thermally efficient solution with extended creepage and clearance between primary and secondary sides for high reliability, surge protection, and ESD robustness.

InnoSwitch3-Pro ICs target fast-charging protocols for applications such as smartphones, notebooks, tablets, smart speakers, and non-charging applications that require either a load-controlled or configurable output. Samples are available now, priced at $1.12, in 10,000-piece quantities.

www.power.com/products/innoswitch/innoswitch3-pro

About the Author

Rick Nelson

Contributing Editor

Rick Nelson is a technical journalist who has served as executive editor of Test & Measurement World, chief editor of EDN, and executive editor of EE-Evaluation Engineering. He has also contributed to publications including Vision Systems Design and Electronic Design, and he has participated in many live panel discussions and webcasts. Rick has also held systems-engineering and product-development positions at General Electric and Litton Industries. He received his B.S.E.E. degree from The Pennsylvania State University.