toothache

9 W Triac dimmable, high power factor, isolated LED driver based on HVLED815PF (for US market)

STEVAL-ILL044V1

Overview

The STEVAL-ILL044V1 demonstration board showcases ST’s new LED driver chip, HVLED815PF. It solves the problem of low-cost drive circuitry for LED replacements for 40 W incandescent or equivalent compact-fluorescent lamps.

The HVLED815PF is a new integrated power controller using primary-side control to achieve LED current regulation within +/-5%. (It also has primary-side voltage regulation, used here for open load protection).
The device incorporates an 800 V avalanche-rated FET and fits in a standard SO-16 package. An internal startup circuit eliminates the need for external rapid-start circuitry.
The PFC-flyback power converter operates in transition mode for the highest efficiency and best use of components. With the addition of a few extra components the HVLED815PF is made to draw near-sinusoidal input current from the AC line. The circuit regulates LED current over a wide range of line voltage and LED string voltage, and is dimmable with standard Triac-based dimmers.

Main features

+/- 5% primary-side current regulation, no optocoupler
Fully isolated output
Low component count
Only 1 tight-tolerance component
High efficiency, >86%
High power factor >0.98

Low THD,
Fits in 28 mm tubing
9 W output, for light equal to range from 40 W to 60 W incandescent
Startup within 0.2 seconds
Dimmable over 90 V to 132 V voltage range
RoHS compliant

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-25 09:14:58

About kXML Vulnerabilities
When I use kXML to parse a WML web page, I get an error message. How can I solve this problem? Also, how can I use kXML to parse images in a WML web page?
About the actual problem of f2812 ADCINT_ISR interrupt
I encountered a problem during debugging, regarding the ADCINT_ISR of dsp. When I used the clock to check the time during breakpoint debugging, the time to enter the ADCINT_ISR interrupt of dsp was 30
You decide the forum functions! Make a habit of voting by replying to posts!
Recently, netizen @深圳小花has made many suggestions for the forum. I would like to thank Xiaohua for her positive and enthusiastic spirit.We have optimized and improved some of the forum's functions, hop
Evaluating the vertical noise characteristics of an oscilloscope
What is Noise and How Should It Be Measured　　Random noise, sometimes called white noise, is theoretically unbounded and follows a Gaussian distribution. Unbounded means that due to the inherent random
Unforgettable 2017-It is indeed unforgettable
2017 was an unforgettable year, but also a difficult year. In January of this year, I lost my job. The company was not doing well and closed down. After I lost my job, I mainly studied for the next fe
I am preparing to learn PIC, and welcome all experts to give me advice
I am preparing to learn PIC, and welcome all experts to teach me. Please add my QQ: 817199. Note: PIC. Where can I buy the development tools of Chongqing PIC?

Datasheet More

Circuits More