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.
- +/- 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, < 20% over 90 V to 132 V range
- 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
RoHS Compliance Grade
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。