Acquired Electronics360

Industrial Electronics

LYTSwitch-6 LED Drivers From Power Integrations Feature High Efficiency and Very Low Standby Power

07 February 2018

Source: Power IntegrationsSource: Power Integrations

Power Integrations, a developer of high-efficiency, high-reliability LED-driver ICs, has announced the LYTSwitch™-6 family of safety-isolated LED-driver ICs for smart lighting applications. The new ICs deliver flicker-free output up to 65 W, and feature up to 94 percent efficiency and as little as 15 mW standby power, with configuration options for two-stage or single-stage PFC support.

Targeting smart residential and commercial fixtures and low-profile ceiling troffers, LYTSwitch-6 ICs also exhibit fast transient response, which facilitates excellent cross regulation performance of parallel LED strings without additional regulator hardware, and allows easy-implementation of a pulse-width-modulation (PWM) dimming interface. LYTSwitch-6 ICs include both constant-voltage (CV) and constant-current (CC) operation, enabling lighting manufacturers to reduce the number of product variants, resulting in manufacturing and logistics savings. The new ICs are protected by an advanced thermal foldback system that prevents overheating while delivering as much light as thermally possible in any circumstance or installation.

LYTSwitch-6 ICs feature a built-in 650 V or 725 V MOSFET and secondary-side FluxLink™ control that eliminates the need for an optocoupler and provides highly accurate output with better than 3 percent CV and CC over line, load and temperature. Power conversion for the flyback stage is more than 94 percent efficient, achieved by using synchronous rectification and quasi-resonant switching, which enables high power output without a heatsink. For example, a 35 W, 12 V, 2.92 A design with an additional PFC circuit has been demonstrated to be over 89 percent efficient. Devices offer low standby power — less than 15 mW in universal AC — even with line voltage sensing, which allows the IC to protect itself from mains voltage surges and swells.

LYTSwitch-6 LED-driver ICs are available now, priced at $0.84 in 10,000 quantities. A reference design (DER-637) describing a 35 W PWM-dimmable LED power supply with efficiency over 89 percent and a power factor greater than 0.9 is available for download from the Power Integrations website at https://www.power.com/lytswitch-6/.

To contact the author of this article, email sue.himmelstein@ieeeglobalspec.com


Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Advertisement
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter
Advertisement

CALENDAR OF EVENTS

Date Event Location
26-28 Feb 2018 Nashville, TN
04-08 Mar 2018 San Antonio, Texas
09-10 Apr 2018 Clearwater Beach, Florida, USA
23-27 Apr 2018 Oklahoma City, Oklahoma
10 May 2018 Pier 94
Find Free Electronics Datasheets
Advertisement