跳至主要内容

LED driver ICs for high-CRI color-mix SSL applications

LED driver ICs for high-CRI color-mix SSL applications


LED driver ICs that can independently power two LED channels, enabling lamps and luminaires that deliver both high-CRI, warm-white light, and high efficacy.


The use of two-channel driver electronics is a requisite in a color-mixed white SSL products. The white and red or amber LEDs have different forward voltage characteristics. Moreover, more white than color LEDs are generally needed. And the driver has to adjust the relative drive currents during dimming to achieve an incandescent-like, dim-to-warm-CCT experience.

In many cases today, SSL product developers must utilize two separate driver ICs to implement color-mixed designs.

The ICs include a linear controller used to drive a primary channel of white LEDs and a buck controller designed to drive a color LED string. The IC requires external MOSFETs. Atmel made the decision not to integrate MOSFETs to provide product developers freedom in supporting a range of string voltages.

Thermal feedback can be used in a similar manner because the LED manufacturers provide LM-80 data with accurate projections of LED performance relative to temperature. the temperature compensation offers performance "very close to the optical feedback." The MSL2021 stores color compensation data in an integrated non-volatile memory array.

The other ICs in the family include the MSL2023 and MSL2024, which are optimized for usage with a companion microcontroller that would perform the color-LED compensation. The MSL2023 includes an I2C serial interface to connect with a microcontroller and internal pulse-width-modulation (PWM) generators. The MSL2024 accepts PWM inputs from a microcontroller.

If power-factor correction (PFC) is required in an SSL design, driver designers will need to add one-or two-stage PFC ICs in front of the new driver ICs. The ICs can operate in isolated or non-isolated driver designs.

The kit includes an LED light engine with an appropriate heat sink. And the circuit board includes an AVR microcontroller. Development teams can use the kit to instantly begin prototyping work.



Light up your design with HTlights LED Driver ICs


Extensive LED driver IC product portfolio, design tools, and technical resources can help you add innovative lighting features to your design.

Your driver is the heart and soul of your LED lighting system. That's why it's so important to choose LED Drivers. Powered by Sanlibang technology, our drivers are efficient, intelligent and programmable, allowing you to create innovative, next-generation lighting systems that live up to your high-performance standards. For your next application, trust Sanlibang LED drivers to provide user satisfaction, as well as superior ROI through quality construction and reliable performance.




评论

发表评论

此博客中的热门博文

LED Light Glare occurs in the following three forms

Glare is a two-fold problem in which lights are reflected off surrounding surfaces so that the light scatters and causes vision problems. It doesn’t interfere with night vision, but makes it difficult to identify and place objects. For the problems of LED glare, all the manufacturers have adopted a variety of methods，some use the brushed PC mask ，others adopt the frosted mask or use the special phosphor materials, etc. , but these methods are not ideal, the drawing masks can eliminate glare, but the flare phenomenon is more serious , our eye tend to be fatigue under this lamp, if we are exposed to it over a prolonged period of time , but also cause eye astigmatism ; while the light loss of those using the mask and cream frosted is too large , the effect is bad. The wrong kind of light, or too much light has been proven to have an impact on your health and quality of life. Glare occurs in the following three forms: Discomfort Glare – Discomfort glare is also known as psycho...
发表评论
阅读全文

Hand painted artwork Premium canvas Old Bold and Brash Squidward Oil Painting on Artist Stretched the Canvas Over a Wooden Frame 16X20 inches

Hand painted artwork Premium canvas Old Bold and Brash Squidward Oil Painting on Artist Stretched the Canvas Over a Wooden Frame 16X20 inches Hand Painted Artwork Polycotton Canvas Paintings Imported Hand painted oil paintings on canvas painted by our professional artist with years of oil painting experience. A great gift idea for your relatives and friends. Stretched and Framed decorative canvas oil paintings set for home decorations wall decor, each panel has a hook already mounted on the wooden bar for easy hanging out of box. Hangs Horizontal Or Vertical. Comes With Removable Art Paintings. Hanging Hardware Included. Ready to Use Art Prints Included. Oil paints or Acrylic paintings on canvas, A perfect wall decorations paintings for living room, bedroom, kitchen, office, Hotel, dinning room, office, bar etc.. Gift card is also available upon request. As each painting is hand painted, actual paintings may be slightly different from the product image. Due to different...
发表评论
阅读全文

How to Become an Amazon Reviewer and Get Free Stuff

Do you want to get free stuff through Amazon in exchange for writing a review on Amazon of the free stuff that you get? You can! It’s relatively easy, so long as you’re willing to put in the time to write reviews! Here’s how.    A couple of years ago we told you about the  Amazon Vine program , through which Amazon users are invited to receive free products, in exchange for their reviewing the item on Amazon. The  Amazon Vine program may or may not still be around , but as it turns out, you don’t have to be invited by Amazon to be a Vine reviewer in order to get free Amazon stuff in exchange for a review! Here’s how. How to Become an Amazon Reviewer and Get Free Stuff The short answer to how to get free stuff from Amazon in exchange for being an Amazon reviewer and reviewing the stuff, is “fill out your Amazon profile, write lots of reviews for the things you have already purchased on Amazon, until you get into the top 10,000 reviewers, and then wait for m...
发表评论
阅读全文