Press Releases

RS Components introduces new offline flyback switcher chips that deliver 94% efficiency for power supplies

Targeting compact power units, InnoSwitch 3 family from Power Integrations cuts power losses by 25%

London, UK, 29 March 2018:

RS Components (RS), and Allied Electronics & Automation the trading brands of Electrocomponents plc (LSE:ECM), the global distributor for engineers, has announced availability of a new family of offline flyback switcher ICs from Power Integrations that offer efficiency of up to 94% and are ideal for use in state-of-the-art compact power supply designs.

Targeting the design of power supplies with stringent constraints in terms of energy consumption, footprint and thermal performance, the new InnoSwitch™3 family of offline CV/CC (Constant Voltage/Current) flyback switcher ICs achieve up to class-leading 94% efficiency over a wide range of varying line and load conditions. The family can also cut power supply losses by a further 25% when compared to the previous generation, enabling the development of small and lightweight power supplies that do not require heatsinks, but can still handle up to 65W of power.

The InnoSwitch3 IC family is available in three series that are optimised for specific applications. The first series is the CE (Current External) series, which delivers accurate CC/CV regulation with external output current sense for optimum design flexibility. It targets compact single-fixed-voltage chargers and adapters for a range of IoT and consumer applications. The CP (Constant Power) series is ideal for USB Power Delivery (PD) applications and is suited for rapid charging and other uses that require dynamic output voltage, including mobile phone charging and notebook adapters. The third is the EP (Embedded Power) series, which includes the family’s highest-rated MOSFET, handling up to 725V. Aimed at demanding industrial applications and appliances, the series provides full line and load protection with excellent multi-output cross-regulation.

All the devices use Power Integrations’ FluxLink™ isolated digital communications technology, but also add synchronous rectification, quasi-resonant switching and a precise secondary-side feedback sensing and control circuit. Designers can therefore use these devices to produce highly efficient and reliable power supply circuits without optocouplers. The ICs also incorporate a wide selection of protection features including lossless line overvoltage and under-voltage, output overvoltage, over-power, over-current and over-temperature protection, as well as output rectifier short-circuit protection.

In addition, the family’s employment of the InSOP-24 package provides a low-profile and thermally efficient solution. Extended 11.5mm creepage and clearance between primary and secondary sides delivers robustness and high reliability. Finally, an online selection tool is also available to help designers customise device features for their specific design requirements at:

The InnoSwitch 3 family is now available from RS, shipping in the EMEA and Asia Pacific regions.


About RS Components

RS Components and Allied Electronics & Automation are the trading brands of Electrocomponents plc, the global distributor for engineers. We offer more than 500,000 industrial and electronic products, sourced from 2,500 leading suppliers, and provide a wide range of value-added services to over one million customers. With operations in 32 countries, we trade through multiple channels and ship around 50,000 parcels a day.

Electrocomponents is listed on the London Stock Exchange and in the last financial year ended 31 March 2017 had revenues of £1.51bn.

For more information, please visit the website at

Editorial Contacts
Aakriti Kaushik
PR Manager - Northern Europe
RS Components
+44 (0) 7795 400 651

PR Agency Contact
Janice Fenton
Account Director
Publitek Technology PR
+44 (0)1225 470000

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