Eagle Eye (Outdoor LED Module) Application Note MODEL NAME : LLDMWW0-15K*0*A RoHS Compliant HALOGEN FREE (30)-4022 1 / 16
CONTENTS 1. Product Description 3/16 2. Specifications 2.1. Chromaticity Bins for Eagle Eye 2.2. Photometric Specifications 4/16 3. Thermal Management 3.1. Overview 3.2. Heat sink Design Guidelines 3.3. Junction Temperature and Case Temperature 3.4. Estimation of Junction Temperature (Tj) 3.5. LED PKG Properties by Junction Temperature (Tj) Values 3.6. Eagle Eye L70 Lumen Maintenance Expectation 5/16 4. Installation Guidelines 4.1. General Information 4.2. Guidelines for Eagle Eye Modules with Asymmetric Lenses 4.3. Light Distribution and Applications 10/16 5. Electrical Connection Guidelines 5.1. Basic Electrical Connections 5.2. Luminaire Efficacy 5.3. Connecting Multiple Eagle Eye Modules 14/16 6. Revision History 16/16 (30)-4022 2 / 16
1. Product Description (1) This product is an LED module (hereafter referred as Eagle Eye) designed for luminaires in outdoor environments where the module can endure severe conditions such as extremely high and low temperatures, high humidity and even submerged conditions for up to 30 minutes. (2) Four different CCTs (Correlated Color Temperatures) are supported by Eagle Eye. Refer to Section 2 for more details. (3) Eagle Eye supports 7 types of lenses where each type generates a different radiation pattern to target an outdoor application requirement. (4) A constant current LED driver is required to properly operate Eagle Eye to meet the electrical and thermal specifications. The Eagle Eye parameters such as forward voltage and current should be considered before selecting the LED driver. The number of Eagle Eye modules, the total voltage, the total current, the circuit (series and/or parallel) topology should also be taken into account before operating the modules with the appropriate LED driver. (5) It is essential that that the Eagle Eye modules are attached to a thermal management solution (heat sink) in order to maintain the junction and case temperatures of Eagle Eye at an appropriate level. This will ensure their proper operation as the lumen maintenance is affected by temperature. For more information, refer to Section 3. (30)-4022 3 / 16
y Eagle Eye (Outdoor LED Module) 2. Specifications 2.1. Chromaticity Bins for Eagle Eye Chromaticity Bins Plotted on the CIE 1931 Chromaticity Diagram 0.44 0.43 3000K 0.42 0.41 0.40 4000K 0.39 0.38 0.37 0.36 0.35 0.34 6500K 5700K 5 SDCM 0.33 0.32 0.31 7SDCM Chromaticity Bin 0.30 0.29 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 x 2.2. Photometric Specifications CCT Luminous Efficacy Luminous Flux CRI Power Consumption Lens Type 3000K 78 lm/w 1285 lm Min. 80 16.3 W Type III (Base Model) 4000K 79 lm/w 1320 lm Min. 80 16.3 W Type III (Base Model) 5700K 98 lm/w 1580 lm Min. 70 16.3 W Type III (Base Model) 6500K 98 lm/w 1580 lm Min. 70 16.3 W Type III (Base Model) All photometric values are measured at 10±2 seconds in the LG Innotek integrating sphere. *Input current : 650mA (Ta : 25ºC) Measurement Tolerance Range (Measurement equipment, Measurement process, Human error) - CRI : ±3%, CCT : ±2%, Luminous Flux : ±5%, CIE 1931 x, y Chromaticity Coordinates : ±0.005, Forward Voltage (Vf) : ±0.8V, Beam Angle : ±5 (30)-4022 4 / 16
3. Thermal Management 3.1. Overview The heat sink or thermal solution should be designed to properly dissipate the thermal load to the ambient air since the heat sink effectiveness will influence the lifetime and the performance of the luminaire. The end product with the Eagle Eye modules should be designed in a way that minimizes the thermal resistance from the LED solder points to the ambient in order to optimize the lumen maintenance and the optical characteristics of Eagle Eye. 3.2. Heat Sink Design Guidelines The lumen maintenance of Eagle Eye cannot be guaranteed if attached without an appropriate heat sink and thermal interface material (thermal pad provided by LG Innotek) for thermal management, as shown in Figure 1. Table 1. Thermal Pad Properties Mechanical Property Material Dimension STG 4015(1) SV1500DN60B - Siloxanes and Silicones (10~25%) - Aluminum Oxide (60~85%) - Platinum Compound (0.01~5%) Diameter : ø 70.8, Thickness : 0.5 [mm] Hardness (Shore 00) 60 ± 10 Electrical Property Dielectric Strength Min. 10 KV/mm Flame Rating V-0 Volume Resistivity 10*E14 Ω cm Thermal Property Thermal Conductivity 1.5 W/mk Continuous Use Temperature ( ) -60 ~ 200 (30)-4022 5 / 16
Case Temperature [ C] Eagle Eye (Outdoor LED Module) 3. Thermal Management The heat sink design is one of the main factors which determine the lumen maintenance and the performance of Eagle Eye. The heat sink should be designed to keep the module case temperature (Tc) below 70. The recommended heat sink material is aluminum, which has a relatively higher thermal conductivity and lower cost compared to other materials. In addition, surface treatment of the heat sink is important to increase the heat transfer rate. Powder coating and anodizing are appropriate solutions for the surface treatment of the heat sink. Heat sink or Luminaire Thermal Pad #2 Eagle Eye Figure 1. Assembly between the aluminum heat sink and the LED module Heat sink Type A (Al) 80 70 60 50 40 30 20 10 0-10 -20 Case Temperature vs Ambient Temperature Maximum Tc -30-10 10 30 50 Operating Ambient Temperature [ C] Heatsink A @750mA Heatsink B @750mA Size : W220 x L95 x H40 [mm] Fin : 9 Fins (T5.0) [mm] Thermal Resistance : 1.75 [ C/W] Heat sink Type B (Al) Case Temperature at different operating temperature Size : W80 x L80 x H40 [mm] Fin : 5 Fins (T5.0) [mm] Thermal Resistance : 3.8 [ C/W] (30)-4022 6 / 16
3. Thermal Management 3.3. Junction Temperature and Case Temperature Junction Temperature (Tj) The definition of Junction Temperature (Tj) is the internal temperature of the chip at which the temperature has the highest value. Since it is difficult to directly measure the Junction Temperature (Tj), its value can be calculated using the equation shown in Figure 3. Case Temperature (Tc) Case Temperature (Tc) is the temperature at the center point of the Eagle Eye plate illustrated in Figure 2, where Tc is measured with a thermocouple. The Case Temperature (Tc) should be lower than 70 while the Eagle Eye module is operating. Thermal paste Thermocouple Case temperature (Tc) Measurement Point Figure 2. Module Plate (bottom view) (30)-4022 7 / 16
3. Thermal Management 3.4. Estimation of Junction Temperature (Tj) Junction temperature (Tj) can be calculated by using the equation in Figure 3. Tc point can be measured as described in Figure 2. Fixture or Heat sink Tc Thermal Pad Rth j-c (Tj ~ Tc) Tj Tj = Tc + (Rth j-c x Ptotal) Figure 3. Calculating the Eagle Eye Tj from Tc How to obtain the value of Tj when Tc is measured at 50 Basic Equation : Tj = Tc + (Rth j-c x Ptotal) - Ptotal = Typical Input Current x Forward Voltage = 0.75[A] x 26.0[V] = 19.5[W] - Rth j-c = 1.6 [ /W] *The value of Thermal Resistance is obtained by the LG Innotek internal experiment. *Example) Tj = Tc + (Rth j-c x Ptotal) = 50[ ] + (1.6[ /W] x 19.5[W]) = 81.2[ ] (30)-4022 8 / 16
Lumen Maintenance [%] Lumen Maintenance [%] Eagle Eye (Outdoor LED Module) 3. Thermal Management 3.5. LED Package Properties by Junction Temperature (Tj) Values Current Ts( ) Tj( ) Reported L70 (Hours) Calculated L70 (Hours) 700mA 85 111 >36,000 124,000 1000mA 85 114 >36,000 96,000 Lumen Maintenance Projection (700mA, Ts=85 C) Lumen Maintenance Projection (1,000mA, Ts=85 C) 100 100 80 80 60 60 40 40 20 20 0 0 6000 12000 18000 24000 30000 36000 Time [Hour] 0 0 6000 12000 18000 24000 30000 36000 Time [Hour] Figure 4. Lumen Maintenance vs Time These results are based on 6,000 hours of LM-80 test data. When the Eagle Eye module is driven between 700mA and 750mA, the applicable LM-80 data for the LED package is the one at 1,000mA. This data is provided for informational purposes only and should not be interpreted as a warranty or specification statement. 3.6. Eagle Eye L70 Lumen Maintenance Expectation Parameter Condition -. Input Current : 750mA -. Ambient Temperature : 50 C Unit Tj 100 C Tc 70 C Rth j-c 1.6 C/W L70 >50,000 Hours (30)-4022 9 / 16
4. Installation Guidelines 4.1. General Information When the Eagle Eye module with Type II or Type III optics is mounted on a heat sink or luminaire, the module must be oriented in the proper direction to generate the desired radiation pattern since these optics produce an asymmetric light distribution. Attaching the Eagle Eye module to a heat sink is very important for reliable operation of Eagle Eye. It is highly recommended to leverage the thermal pad provided by LG Innotek as the thermal interface material (TIM) to remove any air gaps between the Eagle Eye module and the heat sink as this will ensure optimal heat transfer. Please refer to Figure 6. Before the Eagle Eye unit is mounted on a heat sink or luminaire, the thermal interface material (TIM) should be attached on the bottom plate of Eagle Eye. The protection film should be removed from the TIM where the Eagle Eye with TIM should be tightly attached on the heat sink or luminaire by fastening the bolts. Pan Head(+) M4x12 or M4x14 metric machine screws are recommended to fasten Eagle Eye onto the heat sink or luminaire. The screws should be fastened through the holes (circled in red) as shown in Figure 6. The screws should be tightened with a torque in accordance with Table 2. Ensure that the black [-] and gray [+] wires are linked correctly with other wires or connectors from the LED driver to prevent switching polarities. Please refer to Figure 5. A constant current LED driver is required to power Eagle Eye where the driver s output current should not exceed 750mA and its output voltage range should support the voltage range (Typ. 21.5V - Typ. 26.0V) of the Eagle Eye module. (Unit : mm) 195 (±10) Gray wire [+] 8 (±1) Black wire [-] Figure 5. Wire dimensions (30)-4022 10 / 16
4. Installation Guidelines Table 2. Screw Type and Torque Requirement Screw Size Materials Min. Torque Max. Torque Machine Screw (Pan Head, Normal Threaded Bolt) M4 x 14 M4 x 12 Steel 0.8 Nm 1.1 Nm Screw x 3 Eagle Eye Thermal Pad #2 Remove protection film from the TIM before use Heat sink or Luminaire Figure 6. Assembly between Thermal Pad #2 (TIM) and Eagle Eye (30)-4022 11 / 16
4. Installation Guidelines 4.2. Guidelines for Eagle Eye Modules with Asymmetric Lenses The Eagle Eye units with Type II and Type III lenses have an asymmetric light distribution unlike the modules with Type V optics. Therefore, the intended light distribution should be considered before attaching the LED modules on the heat sink or luminaire. As shown below in Figure 7, the LED modules with Type III optics must be oriented appropriately on the luminaire in order to obtain the desired light distribution on the roadway. For the Type II and Type III asymmetric lenses, the alignment line (the dotted line) of the optics center points as shown below should not exceed the tolerance of ±3.1 degrees, which is the angle between the tangential lines of the hole for the attachment bolt. <Example> < Ο > <Example> < X > Figure 7. Roadway Light Distributions Based on the Orientation of the Eagle Eye Modules *Street Light Simulation images are based on Eagle Eye modules with Type III optics. (30)-4022 12 / 16
4. Installation Guidelines 4.3. Light Distribution and Applications Sealed (IP67), suitable for outdoor lighting *Designed by LG Innotek (30)-4022 13 / 16
Lumen Efficacy [lm/w] Eagle Eye (Outdoor LED Module) 5. Electrical Connection Guidelines 5.1. Basic Electrical Connections Series Circuit Input WHITE (NEUTRAL) BLACK (LIVE) LED Driver ㅊ + - + - - 48~52V (±5%) - 350~750mA (+DIM) (-DIM) 0-10V Dimming Optional Parallel Circuit + - Input WHITE (NEUTRAL) BLACK (LIVE) LED Driver - 24V~26V (±5%) - 700~1500mA (+DIM) (-DIM) 0-10V Dimming Optional 5.2. Luminaire Efficacy 100 Luminaire Efficacy [lm/w] 90 80 70 60 Lumen Efficacy [lm/w] 50 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 Input Current per Eagle Eye [A] * Test Sample : 5700K Eagle Eye (Type III Lens) * Test Conditions : Aging 1 Hour (Tc :70ºC) * LED Driver Efficiency is 85% (30)-4022 14 / 16
5. Electrical Connection Guidelines 5.3. Connecting Multiple Eagle Eye Modules 2 Parallel / 5 Series + - + - + - + - + - LED Driver 26V,1400mA 52V,1400mA 78V,1400mA 104V,1400mA 130V,1400mA 40W 80W 120W 160W 200W * LED driver efficiency is 85% 2 Parallel / 5 Channels + - + - + - + - + - LED Driver 26V 1400mA 1-CH. 26V 1400mA 2-CH. 26V 1400mA 3-CH. 26V 1400mA 4-CH. 26V 1400mA 5-CH. 2 Series / 5 Channels + - + - + - + - + - LED Driver 52V 700mA 1-CH. 52V 700mA 2-CH. 52V 700mA 3-CH. 52V 700mA 4-CH. 52V 700mA 5-CH. (30)-4022 15 / 16
6. Revision History Revision Date Contents of Revision Change Remark Rev.1.0 2013.03.29 New Establishment (30)-4022 16 / 16