For modern LED lighting applications such as luminaires used in office and industrial buildings, ON Semiconductor has launched two new QR PSR PWM controllers with Power Factor Control (PFC) function — the dimmable NCL30386 and the non-dimmable NCL30388.
Applications include integral LED bulbs, integrated LED drive electronics, LED light engines and LED driver power supplies.
Both devices are high power factor (PF), single stage, constant current (CC) and constant voltage (CV) primary side regulated (PSR) pulse width modulation (PWM) controllers for Flyback, Buck-Boost or Sepic power topologies.
Notably, the new chips operate in Quasi-Resonant (QR) mode to achieve efficiency levels that exceed those stipulated in power standards such as the EU’s Ecodesign as well as ENERGY STAR and the NEMA SSL regulations.
The integrated digital power factor correction (PFC) algorithm ensures a PF of greater than 0.95 and total harmonic distortion (THD) of less than 10% across a universal input voltage range.
Safety features include brown-out and overvoltage protection plus the ability to detect short circuits in the output, winding, and diode.
Both chips don’t require many external components, reducing time-to-market, BoM cost and the space required to realize a complete lighting solution, according to ON Semiconductor.
Commenting on the new releases, Ryan Zahn, Director of Marketing and Applications for the AC-DC Business Group at ON Semiconductor said: “Due to its low power credentials, LED lighting is an important sector and efficient operation is critical to managing costs in the face of rising energy prices and heightened environmental considerations. Our new solutions not only deliver market-leading efficiency but also offer designers a high degree of flexibility and the ability to meet and exceed the requirements of prevailing efficiency standards. The designer’s task is simplified by the wide range operation, low standby power, and fast startup. Additionally, the NCL30386 offers very precisely controlled dimming across a wide range, making it an ideal solution for smart lighting installations.”
The NCL30386 and the NCL30388 will be in full production in Q1, 2018.
More information: http://www.onsemi.com/PowerSolutions/newsItem.do?article=4020