DIODES AL9901 High Voltage PWM LED Buck Controller User Guide
- August 10, 2024
- DIODES
Table of Contents
DIODES AL9901 High Voltage PWM LED Buck Controller
Specifications
- Input Voltage: XYZ
- Output Power: Value
- LED Current: Value
- LED Voltage: Value
- Efficiency: ~86%
- Number of LEDs: Value
- Dimension: XYZ
- ROHS Compliance: Yes
Key Features
- Integrated 650V/2A MOSFET
- High output voltage, 50V
- Efficiency of approximately 86%
- Channel 1: Vin = 120VAC, Channel 3: ILED
Product Usage Instructions
Adjusting LED Output Current
- Connect the AL9901EV1 board to a power source with the desired input voltage.
- Locate the adjustment mechanism for LED output current on the board.
- Using the provided tools, carefully adjust the current to the desired level (140mA).
Connecting LEDs:
- Determine the number of series-connected LEDs you want to drive.
- Connect the LEDs to the board according to the specified configuration.
- Ensure proper insulation and connections to avoid any short circuits.
Adding Capacitor for Reduced Ripple
- If reduced ripple is desired, add a 68uF electrolytic capacitor to the specified location on the board.
- Verify the connections and polarity of the capacitor before powering on the board.
Frequently Asked Questions (FAQ):
Q: Can the AL9901EV1 board support different input voltages?
A: Yes, the board can operate with input voltages within its specified range.
Refer to the user manual for details on supported voltages.
AL9901EV1 User Guide Universal High Voltage LED Driver with Integrated MOSFET
General Description
This demonstration board utilizes the AL9901 high voltage PWM LED Buck controller with integrated MOSFET providing a cost-effective solution for offline high brightness LED applications. This user‐friendly evaluation board provides users with quick connection to their different types LEDs string. The demonstration board can be modified to adjust the LED output current (140mA) and the number of series-connected LEDs that are driven.
Key Features
- Integrated 650V/2A MOSFET
- High output voltage, 50V
- ~ 86% efficiency
- <5% line regulation (100VAC to 240VAC)
- Universal AC input voltage (100VAC to 240VAC)
- No electrolytic capacitor
- Low BOM cost
Applications
- A60 Type LED light bulb
- Other LED lighting
AL9901 EV1 Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 100 to 240VAC |
| Output Power | 6 – 8W |
| LED Current | 140mA (Adjustable) |
| LED Voltage | 51V |
| Efficiency | ~86% |
| Number of LEDs | 17 LEDs in series (Under Tested) |
| XYZ Dimension | 0.6 ” x 2.4” x 0.6” |
| ROHS Compliance | Yes |
Evaluation Board
Connection Instructions
Input Voltage: 100 to 240VAC (AC+, AC‐) LED Outputs: LED+ (Red), LED‐ (Black)
Evaluation Board Schematic
Evaluation Board Layout
Quick Start Guide
- By default, the evaluation board is preset at 140mA LED Current by R5 and R6. Non‐Dimmable by R2, remove R2 to allow PWM Dimming input.
- 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.
Bill of Material
**#| ****Name| ****QTY| ****Part number|
****Manufacturer| ****Description**
---|---|---|---|---|---
1| U1| 1| AL9901DFN6040-12| Diodes Inc| LED Driver
2| BD1| 1| HD06-T| Diodes Inc| Bridge Rectifiers 0.8A 600V
3| D1| 1| ES1G-13-F| Diodes Inc| DIODE Super FAST 1A 400V SMA
4| Z1| 1| SMBJP6KE440CA| Diodes Inc| TVS bidirectional diode 600W 602V
5| L1| 1| LPS5015-225ML| Coilcraft| 2.2mH 64mA
6| L2| 1| 13R155C| Murata| IND Power 1.5mH
7| C1, C2| 2| VJ1812Y104KXEAT5Z| Vishay| CAP CER (MLCC) – SMD/SMT 1812 0.1uF
500V X7R 10%
8| C3| 1| C1608X7R1A105K| TDK| CAP CER 1.0uF 10V X7R 0603
9| C5| 1| GRM32ER71J106MA12L| Murata| Multilayer Ceramic Capacitors (1210)
10µF 63V X7R 10%
10| R1,R2| 2| RC0603JR-070RL| Yageo| JMPR 0.0Ω 1/4W 0603 SMD
11| R3| 1| RC0603FR-07200KL| Yageo| RES 200KΩ 1/10W 1% 0603 SMD
12| R4| 1| RC0603FR-0722RL| Yageo| RES 22Ω 1/10W 1% 0603 SMD
13| R5, R6| 2| RL0805FR-071R69L| Yageo| RES 1.69Ω 1/8W 1% 0805 SMD
14| F1| 1| 2410SFV1.00FM/125-2| Bel Fuse| Fuse, 1A, 250V, 1810
Functional Performance (No Electrolytic Capacitor across output LEDs)
Board Type| VIN (VAC)| PFC| IIN (mA)| PIN (W)| Vled (V)| ILED (mA)| Pled (W)| Iled
Ripple
(%)
| Efficiency (%)| Athd (%)
---|---|---|---|---|---|---|---|---|---|---
AL9901EV1
Module Board
| 100| 0.750| 98.63| 7.40| 48.42| 126.7| 6.13| 100| 82.85| 61.38
110| 0.730| 94.43| 7.55| 48.52| 130.2| 6.32| 100| 83.65| 63.22
120| 0.710| 90.33| 7.71| 48.62| 133.5| 6.49| 100| 84.22| 66.74
130| 0.693| 87.12| 7.85| 48.68| 136.3| 6.63| 100| 84.56| 71.20
200| 0.615| 71.24| 8.75| 49.05| 149.8| 7.35| 100| 83.93| 91.73
210| 0.604| 70.37| 8.90| 49.08| 151.8| 7.45| 100| 83.73| 92.30
220| 0.602| 68.28| 9.02| 49.11| 153.3| 7.53| 100| 83.49| 99.95
230| 0.592| 67.14| 9.15| 49.12| 155.0| 7.61| 100| 83.16| 94.22
240| 0.583| 66.14| 9.30| 49.14| 156.5| 7.69| 100| 82.73| 94.55
Functional Performance (optional 68µF Electrolytic Capacitor across output LEDs to reduce ripple)
Board Type| VIN (VAC)| PFC| IIN (mA)| PIN (W)| Vled (V)| ILED (mA)| Pled (W)| Iled
Ripple
(%)
| Efficiency (%)| Athd (%)
---|---|---|---|---|---|---|---|---|---|---
AL9901EV1
Module Board
| 100| 0.759| 100.41| 7.63| 48.82| 131.4| 6.41| 50| 84.09| 59.02
110| 0.740| 95.21| 7.74| 48.85| 135.1| 6.60| 50| 85.26| 59.71
120| 0.723| 90.93| 7.88| 48.88| 138.5| 6.77| 50| 85.95| 65.55
130| 0.706| 87.30| 8.01| 48.91| 141.5| 6.92| 50| 86.42| 68.75
200| 0.629| 71.07| 8.85| 49.09| 156.3| 7.67| 50| 86.68| 93.69
210| 0.616| 69.56| 8.99| 49.11| 158.3| 7.77| 50| 86.43| 98.13
220| 0.609| 68.26| 9.13| 49.10| 160.2| 7.86| 50| 86.18| 95.41
230| 0.607| 66.36| 9.24| 49.11| 161.7| 7.94| 50| 85.93| 94.56
240| 0.601| 65.63| 9.38| 49.12| 163.4| 8.03| 50| 85.55| 98.23
Functional Performance
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AL9901EV1 Rev1 January 2015 www.diodes.com