Using the LM3447-A19-230VEVM User's Guide Literature Number: SLUU978 June 2012
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User's Guide SLUU978 – June 2012 LM3447-A19-230VEVM is a Phase-Dimmable, Primary-Side Regulated LED Driver 1 Introduction The LM3447-A19-230VEVM is a 10-W, 230-VAC isolated dimmable LED driver whose form factor intended for A19 and R27 applications. 2 Description The LM3447-A19-230VEVM is a primary-side power regulated PFC controller used for commercial and residential phase-cut dimmer compatible LED lamp drivers.
Electrical Performance Specifications 3 www.ti.com Electrical Performance Specifications Table 1.
SLUU978 – June 2012 Submit Documentation Feedback J3 J1 47 R1 J5 RST2 F1 MOV1 275VAC, 23J J4 Copyright © 2012, Texas Instruments Incorporated 1 Not populated Notes: 0.1uF C11 150k R13 C10 0.1uF 4.7mH L2 R16 1 33nF C4 C2, C4: 305Vac, X2 class R1: Fusible Resistor 10nF C2 R15 1 4.7mH L1 EMI Filter and Snubber Circuit C12 R12 280k 4.7uF RT1 100k 0.1uF C3 R2 820 AUX LM3447MT GND ISNS INV COMP GATE FF VCC FLT1 FLT2 BIAS HOLD VAC TSNS U1 820k R4 D2 HD06 3.
Test Setup www.ti.com 5 Test Setup 5.1 Test Equipment Voltage Source: 190 VRMS to 265 VRMS isolated AC source PCR500LA (KIKUSUI) Multimeters: Agilent 34401A Power Meter: PM1000 Digital Power Meter (Voltech) Output Load: 9 LEDs in series (VF = 3.2 V at 350 mA per LED) Oscilloscope: TDS3045C (TEKTRONIX) Operating Temperature: 25°C Recommended Wire Gauge: 18 AWG not more than two feet long 5.2 Recommended Test Setup Figure 2. LM3447-A19-230VEVM Recommended Test Set Up 5.3 List of Test Points Table 2.
Test Procedure www.ti.com 6 Test Procedure 6.1 Line/Load Regulation and Efficiency Measurement Procedure 1. 2. 3. 4. Connect EVM per Figure 2 above. An external LED load must be used to start up the EVM. Prior to turning on the AC source, set the voltage to 190 VRMS. Turn on the AC source. Record the output voltage and current readings from Voltmeter 2 and output current reading from Ammeter 2 and input voltage reading from Voltmeter 1 and current from Ammeter 1. 5. Increase output voltage by 5 VRMS.
Performance Data and Typical Characteristic Curves 7 www.ti.com Performance Data and Typical Characteristic Curves Figure 3 through Figure 26 present typical performance curves for LM3447-A19-230VEVM. 7.1 Efficiency Efficiency vs Line Voltage 89.00 Efficiency (%) 87.00 85.00 83.00 81.00 79.00 77.00 75.00 190.0 210.0 230.0 250.0 Input Voltage (VAC) Figure 3. LM3447-A19-230VEVM Efficiency 7.2 Power Factor Input Voltage vs. PF 1 0.99 Power Factor 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.9 190.
Performance Data and Typical Characteristic Curves www.ti.com 7.3 Line Regulation Line Regulation 15.00 Input Power (W) 14.00 13.00 12.00 11.00 10.00 9.00 8.00 7.00 6.00 5.00 190.0 210.0 230.0 250.0 Input Voltage (VAC) Figure 5. LM3447-A19-230VEVM Input Power Regulation Line Regulation 325 Output Current (mA) 315 305 295 285 275 265 255 245 235 225 190.0 210.0 230.0 250.0 Input Voltage (VAC) Figure 6.
Performance Data and Typical Characteristic Curves 7.4 www.ti.com Input Current THD Ithd% vs. Input voltage 20.0 Ithd (%) 18.0 16.0 14.0 12.0 10.0 8.0 190.0 210.0 230.0 250.0 Input Voltage (VAC) Figure 7. LM3447-A19-230VEVM- Ithd % vs Line Voltage 7.5 Output Ripple Figure 8.
Performance Data and Typical Characteristic Curves www.ti.com 7.6 Switch Node Voltage Valley Switching Figure 9. Switch Node Waveform (Ch4 - LED current Ch3 - switch node Ch2 - rectified line voltage) 7.7 Triac Dimmer LED Current vs Conduction Angle Turn-On Angle vs. Output Current 300 Output Current (mA) 250 200 150 100 50 0 5 55 105 155 Turn-On Angle (degrees) Figure 10.
Performance Data and Typical Characteristic Curves 7.8 www.ti.com Turn-On Angle vs Input Power Turn-On Angle vs. Input Power 12.00 Total Input Power (W) 10.00 8.00 6.00 4.00 2.00 0.00 5 55 105 155 Turn-On Angle (degrees) Figure 11. Turn-On Angle vs. Input Power 7.9 Input/Output Current and Line Voltage Waveforms vs. Dimmer Setting Figure 12.
Performance Data and Typical Characteristic Curves www.ti.com Figure 13. Dimmer 8 ms (Ch1 - line current, Ch-2 rectified line voltage and Ch4- LED current) Figure 14.
Performance Data and Typical Characteristic Curves www.ti.com Figure 15. Dimmer 6 ms (Ch1 - line current, Ch2 - rectified line voltage and Ch4 - LED current) Figure 16.
Performance Data and Typical Characteristic Curves www.ti.com Figure 17. Dimmer 4 ms (Ch1 - line current, Ch2 - line voltage and Ch4 - LED current) Figure 18.
Performance Data and Typical Characteristic Curves www.ti.com Figure 19. Dimmer 2.0 ms (Ch1 - line current, Ch2 - rectified line voltage and Ch4 - LED current) 7.10 Current Sense Waveform Figure 20.
Performance Data and Typical Characteristic Curves www.ti.com 7.11 LED Open and Short Circuit Waveforms Figure 21. Pre-Open Circuit Waveforms (Ch1 - line current, Ch3 - LED voltage and Ch4 - LED current) Figure 22.
Performance Data and Typical Characteristic Curves www.ti.com Figure 23. Open Circuit Waveforms (Ch1 - line current, Ch3 - rectified line voltage and Ch4 - LED current) Figure 24.
Performance Data and Typical Characteristic Curves www.ti.com Figure 25. Short Circuit Waveforms (Ch1 - line current, Ch3 - rectified line voltage and Ch4- LED current) Figure 26.
Performance Data and Typical Characteristic Curves www.ti.com 7.12 EMI Plot Figure 27.
Performance Data and Typical Characteristic Curves www.ti.com 7.13 Transformer Specification 750815047 PRI 185-265VDC 70kHz SEC 30VDC, 280mADC AUX 15VDC, 20mADC ELECTRICAL SPECIFICATIONS @ 25°C unless otherwise noted: D.C. RESISTANCE (@20°C ): -1 , 7.37 Ohms 3 ±10%. 5-4 , 0.605 Ohms ±10%. 6-7 , 0.625 Ohms ±10%. DIELECTRIC RATING: 000VAC, 1 minute 3 tested by applying 3750VAC for 1 second between pins 3-7 (tie 1+5). INDUCTANCE: .2 mH ±10%, 10kHz, 100mVAC, 3 0mADC, 3-1, Ls. LEAKAGE INDUCTANCE: 0µH nom.
EVM Assembly Drawing and PCB Layout 8 www.ti.com EVM Assembly Drawing and PCB Layout The following figures (Figure 29 through Figure 32) show the design of the LM3447-A19-230VEVM printed circuit board. Figure 29. LM3447-A19-230VEVM Top Layer Copper (top view) Figure 30.
EVM Assembly Drawing and PCB Layout www.ti.com Figure 31. LM3447-A19-230VEVM Top Assembly Drawing (top view) Figure 32.
List of Materials 9 www.ti.com List of Materials The EVM components list according to the schematic shown in Figure 1. Table 3. LM3447-A19-230VEVM List of Materials QTY DESCRIPTION MFR PART NUMBER C10,C11 Capacitor ceramic, 0.1 µF, 16 V, 603 STD STD 1 C12 Capacitor ceramic, 4.7 µF, 16 V, 805 Murata GCM21BR71C475KA 73L 1 C6 Capacitor ceramic, 1.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
【Important Notice for Users of this Product in Japan】 】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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