PowerInt LNK417EG 15W LED Drive Solution

Key words: LED driver, LNK417EG, PowerInt PowerInt's 15W LED driver adopts the LinkSwitchTM-PH LNK417EG device and ± 3% CC adjustment, high efficiency, power factor is greater than 0.9, AC input voltage 90V-265V, meet IEC 61000-4-5 ring wave, IEC 61000-3- 2 Class C harmonics and EN55015 B Contact EMI requirements, the starting time is less than 100 ms. This paper introduces the main characteristics and indicators, drivers and sub-board circuit diagrams, and PCB layout maps. This document describes an isolated, power factor corrected, very high efficiency LED driver (non-dimmable) designed to drive an LED string of 30 V at a current of 500 mA (both nominal) from an input voltage range of 90 VAC to 265 VAC . The design employs a secondary side current feedback circuit to achieve less than 3% output current regulaTIon over line and load. A reference board DER-284 was used with the secondary constant current regulaTIon daughter board added to demonstrate how this technique can be used on AND LinkSwitch-pH flyback design. THE LED Driver Uses a lnk417eg device from the linkswitch-ph family of iCS. This Integrated Controller and 725 V MOSFET DRAMATILE Reduces Complexity and OMPONENT COUNT. This Document Contains The LED Driver Specification, Schematic, And Bill of Material, Transformer Documentation and Typical Performance Characteristics. 15W LED driver main features: ≤3% Output Current Regulation over Line and Load Highly Energy Effectient Efficiency ≥88% AT 115 Vac and 230 Vac Input Low Cost, Low Component Count And Small Printed Circuit Board Footprint Solution Frequency Jitter for Smaller, Lower Cost Emi Filter Components Integrated Protection and Reliability Features Output Open-Circuit / Output Short-Circuit Protection with Auto-Recovery Line Input Overvoltage Shutdown Extends Voltage withstand During Line Faults. Auto-Recovering Thermal Shutdown with Large Hysteresis Protects Both Components And Printed Circuit Board NO DAMAGE DURING Brown-in or Brown-Out Conditions Meets IEC 61000-4-5 Ring Wave, IEC 61000-3-2 Class C Harmonics and EN55015 B Conducted EMI Clean Start-Up - No Output Blinking Fast Start-Up (<100 ms) - no perceptible delay 2011-11-22 16:00:01 Upload Download Attachment (28.48 KB) Figure 1.15W LED drive profile 15W LED driver indicator: 2011-11-22 16:00:01 Upload Download Attachment (31.23 KB) 2011-11-22 16:00:01 Upload Download Attachment (28.34 KB) Figure 2.15W LED driver circuit diagram 2011-11-22 16:00:01 Upload Download attachment (20.96 kB) Figure 3.15W LED drive slab circuit diagram 2011-11-22 16:00:01 Upload Download Attachment (29.81 KB) Figure 4.15W LED driver PCB layout map 2011-11-22 16:00:01 Upload Download Attachment (35.79 KB) Figure 5. Sub-board PCB layout 15W LED Drive Material List: 2011-11-22 16:00:01 Upload Download Attachment (94.87 KB)