Buck Solution_9W LED Driver for Bulb LD9852_9W_R00_TEST. Size 34.2mm(L)ⅹ26mm(W)ⅹ18mm(H) Key Features

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1 Subject LD9852 Demo Board Manual Model Name (45V/200mA) TOP VIEW BOTTOM VIEW Size 34.2mm(L)ⅹ26mm(W)ⅹ18mm(H) Key Features Buck Topology Current Accuracy < 5% Single Stage PFC > Normal Line Efficiency > 89% LED Short / Open protection Meet IEC55015 EMI Test - Conduction Meet IEC Surge Test Meet IEC Class C THD Test 1

2 Lighting Power Design Check List MODEL NAME TOTAL PAGE: 24(Page) P.M. Scott Lin DATE: 2014(Y)/ 03(M)/ 12(D) NO. TEST ITEM SPEC. NAME. PAGE RESULT 1 Input Characteristics - Efficiency > 89% Hunter 10 ~ 10 PASS 2 Input Characteristics - Power Factor (@ Normal Line) 3 Input Characteristics - THD of Input Current > 0.9 Hunter 11 ~ 11 PASS IEC Class C Hunter 12 ~ 12 NA 4 Output Characteristics - Current Accuracy < 5% Hunter 13 ~ 13 PASS 5 Output Characteristics Current Ripple TBD Hunter 14 ~ 14 NA 6 Turn On Delay Time < 0.5s Hunter 15 ~ 15 NA 7 Abnormal Test - LED Open Voltage Test < 58V Hunter 15 ~ 15 PASS 8 Abnormal Test - LED Short Dissipation Test < 0.5W Hunter 16 ~ 16 PASS 9 Abnormal Test - Over Temp. Protection Test Function Hunter 16 ~ 16 PASS 10 Power Component Stress Voltage < Derating Hunter 17 ~ 17 PASS 11 AC On/Off Test TBD Hunter 19 ~ 19 NA 12 EMI Test - Conduction IEC55015 Hunter 21 ~ 22 PASS 13 EMS Test Surge IEC Hunter 23 ~ 23 PASS 14 Thermal Test < 60 C Hunter 24 ~ 24 PASS 2

3 Contents Index 1. LED DRIVER MODULE SPECIFICATION INPUT CONDITION OUTPUT CONDITION PROTECTION CONDITION AMBIENT TEMPERATURE LED DRIVER APPLICATION CIRCUIT SCHEMATIC BOM LIST PCB GERBER FILE INDUCTOR SPECIFICATION EXECUTIVE SUMMARY INPUT CHARACTERISTICS Efficiency Power Factor THD of Input Current OUTPUT CHARACTERISTICS Current Accuracy Current Ripple TURN ON DELAY TIME ABNORMAL TEST LED Open Voltage Test LED Short Dissipation Test Over Temp. Protection Test POWER COMPONENT STRESS VOLTAGE DRAIN VOLTAGE AND INDUCTOR CURRENT WAVEFORMS AC ON/OFF TEST EMI TEST SURGE TEST THERMAL TEST

4 Table Index Table 1 CV Load = 45V Table 2 LED Load = 45V Table 3 Power Factor Table 4 THD of Input Current Table 5 Output Current (ma) Table 6 Current Ripple LED Load = 45V Table 7 Turn On Delay Time Table 8 Over Voltage Level Table 9 Input Power during LED short Table 10 Drain PIN and Diode Stress Steady State (90V/ 60Hz) Table 11 Drain PIN and Diode Stress Transient State (115V/ 60Hz) Table 12 Drain PIN and Diode Stress Steady State (230V/ 60Hz) Table 13 Drain PIN and Diode Stress Transient State (264V/ 60Hz) Table 14 Turn on delay time Table 15 Max. Drain 264Vac/60Hz Table 16 Surge Test Table 17 Thermal Open frame Figure Index Fig. 1 Vac vs. Efficiency Fig. 2 Vac vs. PF Fig. 3 Vac vs. THDi Fig. 4 Start-up 90Vac/60Hz Fig. 5 LED Open 90Vac/60Hz Fig. 6 LED Open 264Vac/60Hz Fig. 7 LED Short 90Vac/60Hz Fig. 8 LED Short 264Vac/60Hz Fig. 9 Over Temp. 115Vac/60Hz Fig. 10 Over Temp. 230Vac/60Hz Fig. 11 Drain & IL 115Vac/60Hz Fig. 12 Drain & IL 115Vac/60Hz/Zoom-In Fig. 13 Drain & IL 230Vac/60Hz Fig. 14 Drain & IL 230Vac/60Hz/Zoom-In Fig. 15 AC On/Off 115Vac/60Hz/90 o Fig. 16 AC On/Off 230Vac/60Hz/90 o Fig. 17 Max. Drain 264Vac/60Hz On/Off Test Fig VAC Line EMI test Fig VAC Neutral EMI test Fig VAC Line EMI test Fig VAC Neutral EMI test

5 1. LED Driver Module 1.1. Input Condition AC Input Voltage : 90VAC ~ 264VAC AC Input Frequency : 47Hz ~ 63Hz 1.2. Output Condition Output Voltage : 45V (15 pcs LED) Output Current : Typical 200mA 1.3. Protection Condition LED Open Protection Auto-recovery, Hiccup 1 times LED short Protection Auto-recovery, Hiccup 1 times Over Temp. Protection Auto-recovery, Hiccup 1 time 1.4. Ambient Temperature Ambient Temperature 25 o C 5

6 2. LED Driver Application Circuit Buck Solution_9W LED Driver for Bulb 2.1. Schematic F1 2A/250V R13 0R L3 NC R1 360K/ COMP 6 ZCD 1 Source VCC N L 1 1 CX1 NC + 3 C3 1uF/0805 C4 10uF/35V/ GND IC1 LD9852 R3 0/1206 1R/1210 R10 R11 NC R5 620K/1206 R6 51K/0805 C6 100uF/63V R12 100K/ LED+ 1 1 LED- 2 AC AC 1 RL2 NC L1 NC L5 NC RL4 NC 4 BD1 ABS8 V1 TVR 471 C1 104J/400V L2 4.7mH R15 NC C2 104J/400V Drain D1 ER2J/SMB D2 US1006FL/SOD123 L4 EPC13 /780uH N1=156T N2=55T - 3 R2 360K/

7 2.2. BOM List P/N Component Value Note RL2 NC, 0805 YAGEO R1 360KΩ, 1206, ±5% YAGEO R2 360KΩ, 1206, ±5% YAGEO R3 0Ω,0805, ±5% YAGEO R5 620KΩ,1206, 1% YAGEO R6 51KΩ,0805, ±1% YAGEO R10 1Ω,1210, 1% YAGEO R11 NC,1210 YAGEO R12 100KΩ,0805, ±5% YAGEO R13 0Ω,0805, ±5% YAGEO L1 NC L2 L3 4.7mH MCD KU NC MAG. layers L4 780uH, EPC13 LD design L5 NC C1 104J / 400V NA C2 104J / 400V NA C3 1uF, 10V, 0603 NA C4 10uF,35V,1206,X7R GRM32ER7YA106KA12 NA C6 100uF, 63V, E-cap HZ C7 NC, 1206 D1 ER2J Panjit D2 US1006FL Panjit BD1 ABS8 Panjit V1 471 NA F1 2A/250V Fuse NA IC1 LD9852 Leadtrend 7

8 2.3. PCB Gerber File Buck Solution_9W LED Driver for Bulb TOP VIEW BOTTOM VIEW 8

9 2.4. Inductor Buck Solution_9W LED Driver for Bulb Bobbin : EPC13, 10PIN Core : EPC13, PC40,Ae=12.5mm Inductance(PIN 2-9) : 780uH NP/ NVcc: 156 / Executive Summary Test Equipment Equipment Equipment Model No. Electrical Load Chroma Power Meter WT210 AC power source Chroma Scope TDS3014 Multi-function Meter Fluke 187 Thermal Hunter PT-3S 9

10 3.1. Input Characteristics Efficiency Buck Solution_9W LED Driver for Bulb > 89% PASS Eff.(%) P in I o V o Efficiency (W) (ma) (V) (%) 90Vac/60Hz Vac/60Hz Vac/60Hz Vac/60Hz Table 1 CV Load = 45V Eff.(%) P in I o V o Efficiency (W) (ma) (V) (%) 90Vac/60Hz Vac/60Hz Vac/60Hz Vac/60Hz Table 2 LED Load = 45V Fig. 1 Vac vs. Efficiency 10

11 Power Factor Buck Solution_9W LED Driver for Bulb > Normal Line PASS PF CV:42V CV:45V CV:48V LED:45V 90Vac/60Hz Vac/60Hz Vac/60Hz Vac/60Hz Table 3 Power Factor Fig. 2 Vac vs. PF 11

12 THD of Input Current Buck Solution_9W LED Driver for Bulb IEC Class C PASS THD i (%) CV:42V (%) CV:45V (%) CV:48V (%) LED: 45V (%) 90Vac/60Hz Vac/60Hz Vac/60Hz Vac/60Hz Table 4 THD of Input Current Fig. 3 Vac vs. THDi 12

13 3.2. Output Characteristics Current Accuracy Buck Solution_9W LED Driver for Bulb < 5% PASS Output Current (ma) 90Vac/ 60Hz 115Vac/ 60Hz 230Vac/ 60Hz 264Vac/ 60Hz Line Regulation(%) CV=48V CV=45V CV=42V Load Regulation(%) LED=45V Table 5 Output Current (ma) LED ACC% = (Max-Min) / (Max+Min) = 0.352% 13

14 3.2.2 Current Ripple TBD NA Definition of Current Ripple (%): I PK-PK / I o * 100 CR(%) 90Vac/ 60Hz 115Vac/ 60Hz 230Vac/ 60Hz 264Vac/ 60Hz I o (ma) I PK-PK (ma) CR(%) Table 6 Current Ripple LED Load = 45V 3.3. Turn On Delay Time TBD NA Input 115Vac T turn on delay 565mS Table 7 Turn On Delay Time Fig. 4 Start-up 90Vac/60Hz CH1:V ac, CH4:I o 14

15 3.4. Abnormal Test LED Open Voltage Test < 58V (VLED*1.3) PASS Input Voltage 115VAC/60Hz 230VAC/60Hz Output Voltage 52.6V 52.4V Table 8 Over Voltage Level Fig. 5 LED Open 90Vac/60Hz CH1: VDrain, CH2:VCC Fig. 6 LED Open 264Vac/60Hz CH1: VDrain, CH2:VCC 15

16 LED Short Dissipation Test < 0.5W PASS Input Voltage 90VAC/60Hz 115VAC/60Hz 230VAC/60Hz 264VAC/60Hz Input Power 55.59mW 85.13mW 277mW 357mW Table 9 Input Power during LED short Fig. 7 LED Short 90Vac/60Hz CH1: VDrain, CH2:VCC Fig. 8 LED Short 264Vac/60Hz CH1: VDrain, CH2:VCC Over Temp. Protection Test Function PASS Fig. 9 Over Temp. 115Vac/60Hz CH1: VDrain, CH2:VCC Fig. 10 Over Temp. 230Vac/60Hz CH1: VDrain, CH2:VCC 16

17 3.5. Power Component Stress Voltage < Derating PASS No. Location Steady State(90V / 60HZ) Max. Rating(V) Measurement Derating(%) V V 1 Drain % 2 D % Table 10 Drain PIN and Diode Stress Steady State (90V/ 60Hz) No. Location Transient State(115V / 60HZ) Max. Rating(V) Measurement Derating(%) V V 1 Drain % 2 D % Table 11 Drain PIN and Diode Stress Transient State (115V/ 60Hz) No. Location Steady State(230V / 60HZ) Max. Rating(V) Measurement Derating(%) V V 1 Drain % 2 D % Table 12 Drain PIN and Diode Stress Steady State (230V/ 60Hz) No. Location Transient State(264V / 60HZ) Max. Rating(V) Measurement Derating(%) V V 1 Drain % 2 D % Table 13 Drain PIN and Diode Stress Transient State (264V/ 60Hz) 17

18 3.6. Drain Voltage and Inductor Current Waveforms Fig. 11 Drain & IL 115Vac/60Hz CH1: Drain, CH4: I L Fig. 12 Drain & IL 115Vac/60Hz/Zoom-In CH1: Drain, CH4: I L Fig. 13 Drain & IL 230Vac/60Hz CH1: Drain, CH4: I L Fig. 14 Drain & IL 230Vac/60Hz/Zoom-In CH1: Drain, CH4: I L 18

19 3.7. AC On/Off Test TBD NA Input Voltage 115VAC/60Hz 230VAC/60Hz Turn on delay 414mS 165.6mS Table 14 Turn on delay time Power On: 1000mS & Power Off 1000mS Fig. 15 AC On/Off 115Vac/60Hz/90 o CH1: Vac, CH2:VDrain, CH4:I o Fig. 16 AC On/Off 230Vac/60Hz/90 o CH1: Vac, CH2:VDrain, CH4:I o Input Voltage 264V AC /60Hz Max. Drain voltage 562V Table 15 Max. Drain 264Vac/60Hz Fig. 17 Max. Drain 264Vac/60Hz On/Off Test CH1: Vac, CH2:VDrain, CH4:I o 19

20 Note: The voltage spike of Drain is induced from inrush current at power on instantaneously. It s easy to be observed while phase of AC input is 90 o or 270 o EMI Test Meet IEC55015, < 6db PASS Fig VAC Line EMI test 20

21 Fig VAC Neutral EMI test Fig VAC Line EMI test 21

22 Fig VAC Neutral EMI test 3.9. Surge Test Meet IEC PASS EUT Line: 220Vac 2PIN 3PIN System Spec.: 45V / 200mA Waveform 1.2/50 10/700 Ring Impedance 12ohm 2ohm Repetition Once each 20 second period with 5 transients per test NOTE: LD9852 Real Demo Board Test Mode Phase & Level (V) Test Result L/N K -0.5K K -0.5K PASS PASS NOTE: 22

23 Table 16 Surge Test Thermal Test < 60 C PASS No. Location 1 L C IC D1 150 Ambient Max. Derating(%) 90V/60Hz(.) 115V/60Hz(.) 230V/60Hz(.) 264V/60Hz(.) Rating(.) 90V/60Hz 264V/60Hz Table 17 Thermal Open frame