PI launch efficiency of 93%, components can be reduced by 30% 150WLED driver design

Offline LED driver IC the highest efficiency and service life of the world's longest manufacturer Power Integrations today announced the launch of a reference design kit for LED lamps and other industrial infrastructure / lighting system 150 W 48 V power supply. The drive circuit in the RDR-292 rate was 93% in 230 of those in the 110 VAC VAC input, the input efficiency rate of 91%. The design can make the power factor of the system more than 0.97, THD less than 10%, and can easily meet the EN61000-3-2 C standard. In the design of the platform under the same, simply from the HiperPFS (PFC) and HiperLCS (LLC) to select a different IC converter and the corresponding power rate of the size of the devices in the family members, the power range can be extended to the design of 75 W to 400 W.

RDK-292 in the driver's PFC, LLC and standby power supply circuit design requires less than 125 components, so as to reduce the cost of BOM, but also access to excellent reliability. The design combines the use of the Power Integrations highly integrated HiperPFS power factor correction IC and HiperLCS resonant converter IC, compared with the traditional LLC design scheme can save up to 35 components. HiperLCS also allows the use of smaller cores and output filter capacitors than typical LLC designs. In addition, the design also uses a Qspeed hybrid PIN-Schottky diodes with ultra fast silicon PFC diode compared to the traditional, it can significantly reduce the diode recovery damage, so as to enhance the efficiency of CCM PFC.

The lighting device using remote lighting control system, the design of the LinkSwitch -TN IC Power Integrations to achieve high efficiency standby power supply based on function. Add a CAPZero X capacitor discharge IC can further save energy, thus the no-load power consumption of 264 VAC input to about 800 mW.

Power Integrations product marketing manager Andrew Smith said: "LED lighting can be for municipal facilities and commercial / industrial enterprises to bring substantial cost savings, but if there is no high efficiency, high reliability and low cost driver circuit, will not be able to fully realize these savings. Power Integrations product line is very complete (as shown in RDK-292), can provide a strong competitive advantage for high-power LED lighting system designers. "

RDK-292 contains specifications, circuit schematics, BOM, transformer specifications, PCB layout and performance data. RDK-292 (www.powerint.com/rdk) and RDR-292 (http://www.powerint.com/sites/default/files/PDFFiles/rdr292.pdf) can now be downloaded from the Power Integrations website.