DIODES AL1698K 120VAC Dimmable LED Driver User Guide
- June 2, 2024
- DIODES
Table of Contents
DIODES AL1698K 120VAC Dimmable LED Driver
General Description
This demonstration board utilizes the AL1698K Boost LED driver-converter with single winding inductor providing a cost effective triac dimmable solution for offline high brightness LED applications. This user-friendly evaluation board provides users with quick connection to their different types of LED strings. The demonstration board can be modified easily to adjust the LED output current and the number of series connected LEDs that are driven. A BOM, schematic, and layout are included. The layout describes the parts used on this demonstration board, along with measured performance characteristics. These materials can be used as a reference design.
Key Features
- Triac Dimmable
- Active PFC with power factor >0.9
- High efficiency >94%
- Single winding
- Low THD
- Good dimmer compatibility
- Low BOM cost
Applications
Retrofit Bulb, Par Lamps
Specifications
| Parameter | Value |
|---|---|
| AC Input Voltage | 108~132V |
| Output Power | 8.1W |
| LED Current | 37mA |
| LED Voltage | 220V |
| Power Factor | >0.9 |
| Efficiency | 94% |
| XYZ Dimension | 57x 28 x 20mm |
| ROHS Compliance | Yes |
Evaluation Board
Connection Instructions:
- AC-L Input: White-Line
- AC-N Input: White-Neutral
- DC LED+ Output: LED+ (Red)
- DC LED- Output: LED- (Black)
Board Layouts
Quick Start Guide
- Preset the isolated AC source to 120VAC.
- Ensure that the AC source is switched OFF or disconnected.
- Connect the anode wire of the LED string to the LED+ terminal of the evaluation board.
- Connect the cathode wire of the LED string to the LED- terminal of the evaluation board.
- Connect two AC line wires to the AC-L and AC-N terminals on the evaluation board.
- Ensure that the area around the board is clear and safe, and preferably that the board and LEDs are enclosed in a transparent safety cover.
- Turn on the main switch. LED string should light up with LED.
DO NOT TOUCH THE BOARD, LEDs OR BARE WIRING.
Caution : The AL1698K is a non-isolated design. All terminals carry high voltage during operation!
Schematic
Transformer Design
Bobbin and Core
EE10 Vertical 4+4 pin
Transformer Parameters
- Primary Inductance (Pin8-Pin10, all other windings open)： Lp=3.0mH, ±5%@1kHz
- Primary Winding Turns (Pin4-Pin8): NP=147Ts
- Varnish the complete assembly
Transformer Winding Construction Diagram
| Item | Winding name | Description |
|---|---|---|
| 1 | WD1-Primary Winding | Start at Pin 4, Wind 147 turns of Φ0.23mm wire and |
finish on Pin 8
2| Insulation| 2 Layers of insulation tape
Bill of Material
| # | Item | Description | Package | Quantity |
|---|---|---|---|---|
| 1 | C1 | 22nF/250V, CL21, Pitch=7.5mm | DIP | 1 |
| 2 | C2 | 220nF/250V, CL21, Pitch=7.5mm | DIP | 1 |
| 3 | C3 | 150nF/250V, CL21, Pitch=7.5mm | DIP | 1 |
| 4 | C4 | Ceramic Cap,4.7µF/25V,X7R | 0805 | 1 |
| 5 | C5 | Ceramic Cap,1.0µF/25V,X7R | 0805 | 1 |
| 6 | C6 | NC | DIP | 0 |
| 7 | C7 | E-Cap,130°C,33µF/250V,12.5*16mm | DIP | 1 |
| 8 | C8 | NC | 805 | 0 |
| 9 | C9 | Ceramic Cap,100nF/25V,X7R | 0805 | 1 |
| 10 | C10 | Ceramic Cap,2.2nF/25V,X7R | 805 | 1 |
| 11 | BD1 | Rectifier Bridge,HDS10M,1A/1KV, Diodes Incorporated (Diodes) | HDS | 1 |
| 12 | D1 | Fast Recovery Diode,ES1J,1A/600V, Diodes | SMA | 1 |
| 13 | D2 | NC | SOD-323 | 0 |
| 14 | Z1 | NC | SOD-323 | 0 |
| 15 | Z2 | NC | SOD-323 | 0 |
| 16 | Z3 | BZT52C15S,15V Zener, Diodes | SOD-323 | 1 |
| 17 | FR1 | Fuse Resistor,1R, 5%, 1W | DIP | 1 |
| 18 | FR2，FR3 | Fuse Resistor,68R, 5%, 2W | DIP | 2 |
| 16 | R1 | Resistor, 5.1K, 5%, 1/8W | 0805 | 1 |
| 17 | R2 | SMD Resistor,330R, 5%, 2W | DIP | 1 |
| 18 | R3 | SMD Resistor,10R, 1%, 1/8W | 0805 | 1 |
| 19 | R4 | SMD Resistor,11R, 1%, 1/8W | 0805 | 1 |
| 20 | R5,R6,R11,R12 | SMD Resistor,2M, 5%, 1/4W | 1206 | 4 |
| 21 | R7 | SMD Resistor,27K, 5%, 1/8W | 0805 | 1 |
| 22 | R8,R9 | NC | 1206 | 0 |
| 23 | R10 | NC | 0805 | 0 |
| 24 | R13 | SMD Resistor,200K, 5%, 1/8W | 0805 | 1 |
| 24 | R14,R15 | NC | 0805 | 0 |
| 25 | RJ1,RJ2 | SMD Resistor,0R, 5%, 1/4W | 1206 | 2 |
| 26 | L1,L2 | 1.8mH, 6*8mm,WURTH Elektronic | DIP | 2 |
| 27 | L3 | EE10, Vertical, 4+4pin,Single Winding,3.0mH | DIP | 1 |
| 28 | Q2 | CS4N60 4A/600V | TO-251 | 1 |
| 29 | U1 | AL1698K-20C, Diodes Dimmable IC | SOP-7 | 1 |
Electrical Performance
Dimming Test
Dimmer compatibility and dimming range
Num
| ****
Dimmer Type
| ILED(mA)| Dimming Percentage(%)| Flicker or not
---|---|---|---|---
Min| Max| Min| Max
1| Lutron D600PH-WH| 0.199| 31.668| 0.556177| 88.50755| No
2| Lutron C-600| 2.223| 33.761| 6.212968| 94.35718| No
3| Lutron NLV-600| 2.8886| 33.855| 8.073225| 94.6199| No
4| Lutron NTELV-600| 3.937| 34.565| 11.00335| 96.60425| No
5| Lutron DVELV-300P| 2.614| 34.119| 7.305757| 95.35774| No
6| Lutron DV-600P| 1.052| 32.216| 2.94019| 90.03913| No
7| Lutron SELV-300P| 2.584| 34.846| 7.221912| 97.3896| No
8| Lutron MACL-153M| 2.253| 31.066| 6.296814| 86.82504| No
9| Lutron S600P-L-600W| 0.318| 32.392| 0.888765| 90.53102| No
10| Lutron LXLV-600PL| 1.326| 32.434| 3.705981| 90.64841| No
11| Lutron MAW-603| 2.632| 33.904| 7.356065| 94.75685| No
12| Lutron MIR-600| 2.892| 35.424| 8.082728| 99.00503| No
13| Lutron DV-603PG| 0.781| 32.093| 2.182784| 89.69536| No
14| Lutron NTLV-600| 3.842| 33.706| 10.73784| 94.20347| No
15| Lutron AY-600P| 1.974| 32.966| 5.517049| 92.13527| No
16| Lutron TGCL-153P| 8.209| 32.017| 22.94298| 89.48295| No
17| Lutron DVLV-603P| 1.911| 32.561| 5.340973| 91.00335| No
18| Lutron MAELV-600| 4.217| 34.584| 11.78591| 96.65735| No
19| Cooper SI06P| 0.293| 32.547| 0.818893| 90.96423| No
20| Cooper SI061| 0.073| 35.849| 0.204025| 100.1928| No
21| Cooper TAL06P| 2.088| 34.593| 5.835662| 96.6825| No
22| Cooper DLC03P| 3.345| 34.432| 9.348798| 96.23253| No
23| Lutron TT-300| 0.152| 32.591| 0.424818| 91.0872| No
24| Leviton TBL03| 1.9836| 34.278| 5.543879| 95.80212| No
25| ZING EAR ZE-04| 0.275| 35.157| 0.768586| 98.2588| No
26| Westek 4010| 0.232| 33.812| 0.648407| 94.49972| No
Dimming Curve
Functional Waveform
Thermal Test
EMI Conduction Test
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