AP1694AEV10

AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver General Description  This  AP1694A  Triac  Dimmable  GU10  12V/400mA  Buck  LEDs  driver  EV  board  use  tapped  transformer  to  increasing  power  conversion  turn  on  duty  cycle,  boost  current  back  to  LED  during  ratio  of  tapped  winding. Also the bigger gauge wire can be  used as well as the large inductance can be  suitable in switching loop which can reduce  the  switching  current  and  the  lower  forward drop so that SBR diode can be used  which  can  reduce  the  power  consumption  on the diodes.    Key Features           Typical 3% to 95% Dimming  performance (Depends on dimmers  brands)  Boundary conductive switching mode  Simple adjustable Constant Current   Inductor Short Protection  Low BOM cost  PFC >0.9 & low THD.  100 to 135VAC input range  >77% Efficiency  With open, short, and wrong polarity  LED protection      Applications       GU10 LED Offline small size bulb  Candle size LED lamp  Desktop lamps  Under the counter lamps  AP1694A EV10 Specifications  Parameter Value  Input Voltage  PFC  LED Current  LED Voltage  Efficiency  Number of LEDs   100 to 135VAC  > 0.9  400mA (Adjustable)  12V  >77%  4 LEDs in series  (Under Tested)  28.5 x 16.5 x 14.5mm  Yes   XYZ Dimension   ROHS Compliance     Evaluation Board  Figure 1: Top View    Figure 2: Bottom View      Connection Instructions   Input Voltage:  120VAC (AC+, AC‐)   LED Outputs:  LED+ (Red), LED‐ (Black)      AP1694AEV10 Rev2 July 2015 www.diodes.com Page 1 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver WHY USE DIODES TAPPED TRANSFORM STRUCTURE       The traditional Buck converter turn on time is inverse proportion with input voltage.    Vo = D x Vin.    The duty cycle will be getting smaller when the input voltage goes higher.   Example: Vo=12V, Vin= 120VAC, Fs= 75kHz.    D= Vo/Vin *   = 12V/120V * 1.414 = 0.07  Ton=D/Fs = 0.07/ 75kHz =0.933µs. T=1/Fs =13.33µs     Since the Ton time is too short in the duty cycle; therefore there is not enough current passing  through the LEDs and charging the inductor. In result, it caused the efficiency to be lower.   In order to solve this issue ‐ use the Diodes tapped transformer to boost the output current &  increase the Ton time in the duty cycle.     With the “new tapped” transformer, the Duty cycle will be:    D is original duty cycle = Vo/Vin*1.414, n = NA+Np/NA & L = Lp + LA,                    Vo/Vin = D’/(D’ +n(1‐D’)),   If NA=40Ts, Np=100Ts, n=3.5     D’ = nVo/(Vin+(n‐1)Vo) = 0.21   The duty cycle almost increased by 3 times.    The Efficiency will increase about 4 to 5% (before the Efficiency was about 72% now is 77%)  comparing with the “none tapped” transformer.                      AP1694AEV10 Rev2 July 2015 www.diodes.com Page 2 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver DIODES TAPPED TRANSFORMER DESIGN  AP1694A 120VAC Buck tapped 12V 400mA Transformer Spec    1)   Bobbin    EEP10     4+4 pin  1 WD2: Primary 30#*1, 50Ts 6 6 WD1: P r i m a r y 2 WD3: Auxiliary 36#1, 86Ts 34#*1, 74Ts 7     5 2) Transformer Parameters  1.   Primary Inductance (Pin1‐Pin7,  all  other  windings are open)    Lp = 0.6mH   ±  5%@1kHz  2.   Primary Winding Turns: NP=74Ts (Pin7‐Pin6) + 50Ts (Pin 6 to Pin 1)  3.   Auxiliary Winding Turns (Pin2‐ Pin5): NA= 86Ts (Pin 2 to Pin 5)  3)   Transformer Winding Construction Diagram    Winding  Number  1  2    Windings  WD1‐Primary  Winding  WD2‐Primary    Winding  Insulation Winding  Specification Start at Pin 7, wind 74 turns of single Φ34# wire and finish on Pin 6. Start at Pin 6, wind 50 turns of single Φ30# wire and finish on Pin 1. 2 Layers of insulation tape 3  WD3‐Auxiliary  Winding  Start at Pin 2, wind 86 turns of single Φ36# wire and finish on Pin 5. 4  Insulation 2 Layers of insulation tape   AP1694AEV10 Rev2 July 2015 www.diodes.com Page 3 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver Evaluation Board Schematic    Figure 3: Evaluation Board Schematic    Evaluation Board Layout   Figure 4: PCB Board Layout Top View    Figure 5: PCB Board Layout Bottom View      Quick Start Guide  1. 2. 3. 4. 5. 6. By default, the evaluation board is preset at 400mA LED Current adjustment by R10//R11.   Ensure that the AC source is switched OFF or disconnected.  Connect the AC line wires of power supply to “AC+ and AC‐” on the left side of the board.  Connect the anode wire of external LED string to LED+ output test point.   Connect the cathode wire of external LED string to LED‐ output test point.    Turn on the main switch.  LED string should light up.     AP1694AEV10 Rev2 July 2015 www.diodes.com Page 4 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver Bill of Material   #  Name  QTY  Part number   Manufacturer  Description  1  U1  1  AP1694AS‐13  Diodes Inc  LED Driver, SO7  2  T1  1  EL1004R  Elite Electronics  EE10, Transformer  3  BD1  1  HD06‐T  Diodes Inc  Bridge Rectifiers 0.8A 600V  4  D1  1  DFLU1400‐7  Diodes Inc  Rectifier 1A/400V  5  D2  1  B1100B  Diodes Inc  Rectifier 1A/100V  6  D3  1  MMSZ5250B‐7‐F  Diodes Inc  Zener Diode, 20V  7  F1  1  C1Q1  Bel Fuse  Fuse, 1A/125V  8  Q1  1  AOU3N60  Alpha Omega  MOSFET N‐CH 600V 3A IPAK  9  Q2  1  BSS127S‐7  Diodes Inc  MOSFET N‐CH 600V 0.05A SOT‐23  10  L1  1  LPS6235‐475MR  Coilcraft  4.7mH/130mA  11  C1A, C2  2  C1210X224K501T  Holystone  CAP CER 1210 0.22µF 200V X7R  12  C1B  0  Not fitted      13  C3  1  GMK316BJ106KL‐T  Taiyo Yuden  CAP CER 10µF 35V X5R 1206  14  C4  1  EEU‐FR1E331B  Panasonic  CAP 330µF/25V (8 x 13mm)  15  C6  1  C1206X0683K501T   Holystone  CAP CER 1206 0.068µF 500V X7R  16  R1  1  RC0805FR‐077K5L  Yageo America  RES 7.5KΩ 1/8W 1% 0805 SMD  17  R2  1  FMP100JR‐52‐330  Yageo America  RES 330Ω 1W 5% FMP100  18  R3A, R3B  2  RC0805FR‐07120KL  Yageo America  RES 120KΩ 1/8W 1% 0805 SMD  19  R4  1  RC1206FR‐073K0L  Yageo America  RES 3.0KΩ 1/8W 1% 1206 SMD  20  R5  1  RC0603FR‐0720KL  Yageo America  RES 20KΩ 1/8W 1% 0603 SMD  21  R6  1  RC0603JR‐0722RL  Yageo America  RES 22Ω 1/8W 1% 0603 SMD  22  R7  1  RC0603FR‐0711KL  Yageo America  RES 11KΩ 1/8W 1% 0603 SMD  23  R8  1  RC0603FR‐0772KL  Yageo America  RES 72KΩ 1/8W 1% 0603 SMD  24  R9  1  RC0603FR‐071K5L  Yageo America  RES 1.5KΩ 1/8W 1% 0603 SMD  25  R10  1  MCR10ERTFL2R02  Rohm  RES 2.02Ω 1/8W 1% 0805 SMD  26  R11  1  MCR10ERTFL3R57  Rohm  RES 3.57Ω 1/8W 1% 0805 SMD  27  R12  1  RC1206FR‐073K0L  Yageo America  RES 3.0KΩ 1/8W 1% 1206 SMD  28  R13  1  RC0805FR‐0730K0L  Yageo America  RES 30KΩ 1/8W 1% 0805 SMD  29  R14  1  RC0201JR‐0710KL  Yageo America  RES 10KΩ 1/8W 1% 0603 SMD  30  Rf  1  FMP100JR‐52‐680  Yageo America  RES 68Ω 1W 1% FMP  31  Rm  1  MOV‐07D431KTR  Bournes  MOV, 275VAC    AP1694AEV10 Rev2 July 2015 www.diodes.com Page 5 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver Functional Performance   Manuf  Board Type  VIN  PFC   (VAC)  Diodes  Inc  AP1694AEV10  100  Module  110  Board  PIN (W)  VLED (V)  ILED (mA)  PLED (W)  ILED (%)  Efficiency  Athd (%)  (%)  0.982  5.54  11.28  377.0  4.25  ‐5.75  77.6  11.1  0.979  6.02  11.30  407.3  4.60  1.60  77.4  13.5  120  0.972  6.03  11.29  414.2  4.68  3.65  77.5  16.9  130  0.967  6.08  11.28  419.6  4.73  4.90  77.2  17.2  135  0.951  6.23  11.27  422.1  4.76  5.55  76.4  19.3    Functional Performance  LED Current (mA) vs Vin (VAC) AP1694AEV10 82 430 80 420 LED Current [mA] Efficiency [%] Efficiency (%) vs Vin (VAC) 78 76 74 410 400 390 380 370 72 90 100 110 120 130 90 140 100 110 120 130 140 Vin [VAC] Vin [VAC] Figure 7. LED Current vs. Vin Figure 6. Efficiency vs. Vin LED Current (%) vs Vin (VAC) PFC vs Vin (VAC) AP1694AEV10 6 1.00 4 0.80 2 AP1694AEV10 0.60 PFC LED Current [%] AP1694AEV10 0 0.40 ‐2 0.20 ‐4 ‐6 0.00 90 100 110 120 130 140 90 100 Vin [VAC] Figure 8. LED Current Line Regulation AP1694AEV10 Rev2 July 2015 www.diodes.com 110 120 130 Vin [VAC] Figure 9. PFC vs. Vin Page 6 of 10 140 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver Performance Waveforms  Figure 10. Turn on time (80mS) at 120VAC input Figure 12. Input AC voltage vs. output current Figure 11. Output Voltage & Current at 120VAC Figure 13. Input AC voltage vs. input AC current         AP1694AEV10 Rev2 July 2015 www.diodes.com Page 7 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver Dimmer Compatibility Performance List (120VAC Dimmers)  120VAC Dimmers  Io(mA)  Dimming (%)  Index  Brand  Model  min  max  min  max  1  S‐603PG  8.5  283.6  2.1  70.9  2  D‐603PGH  0  284.2  0  71.1  LG‐600P  21  345.0  5.3  86.3  4  DV‐600P  19  348.7  4.8  87.2  5  D‐600PH  0  333.5  0  83.4  6681  11  398.9  2.8  99.7  6631  7.2  365.1  1.8  91.3  SAL06P  44  387.1  11  96.8  3  Lutron  6  Leviton  7  8  Cooper  Performance  Result  (No flicker)  √  √  √  √  √  √  √  √  Note:  √ = No Flicker  EMC test result     Conductive emission noise level (Pass with 15db margin)  AP1694AEV10 Rev2 July 2015 www.diodes.com Page 8 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver       Radiated emission noise level (Pass, please zoom in to see the green mark)  Note: Green color data are after VQP, will be 5db down than normal           AP1694AEV10 Rev2 July 2015 www.diodes.com Page 9 of 10 AP1694AEV10 User Guide 120VAC Triac Dimmable GU10 LED Driver IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2015, Diodes Incorporated www.diodes.com AP1694AEV10 Rev2 July 2015 www.diodes.com Page 10 of 10