AP1694AEV10 User Guide

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 
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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 
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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
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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
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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 ± [email protected] 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
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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
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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
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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
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110
120
130
Vin [VAC]
Figure 9. PFC vs. Vin
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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
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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
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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
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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
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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
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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
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document is the final and determinative format released by Diodes Incorporated.
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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
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Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2015, Diodes Incorporated
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AP1694AEV10 Rev2
July 2015
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