AL9910AEV2 User Guide

AL9910AEV2 User Guide
High Current and High Voltage LED Driver
General Description This demonstration board utilizes the AL9910A high voltage PWM LED Buck controller 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 (2.5A) and the number of series connected LEDs that are driven. Key Features 
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High output current, 2.5A ~ 90% efficiency DC input voltage range up to 80V Low BOM cost PWM Dimmable Applications 
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Signage and decorative LED lighting High current DC‐DC LED driver High intensity lamps Street lamps AL9910AEV2 Rev1
August 2014
www.diodes.com
AL9910A EV2 Specifications Parameter
Value Input Voltage Output Power LED Current LED Voltage Efficiency Number of LEDs 40 to 80VDC 50 – 60W 2.5A (Adjustable) 25V ~90% (2) sets of 8 LEDs in parallel (Under Tested) 3.00 ” x 3.25” Yes XY Dimension ROHS Compliance Evaluation Board DC-
LED+
DC+
LEDFigure 1: Top View Connection Instructions Input Voltage: 40 to 80VDC (DC+, DC‐) LED Outputs: LED+ (Red), LED‐ (Black) Page 1 of 6
AL9910AEV2 User Guide
High Current and High Voltage LED Driver
Evaluation Board Schematic Figure 2: Evaluation Board Schematic Evaluation Board Layout
Figure 3: PCB Board Layout Top View Figure 4: PCB Board Layout Bottom View AL9910AEV2 Rev1
August 2014
www.diodes.com
Page 2 of 6
AL9910AEV2 User Guide
High Current Non-Dimmable
Quick Start Guide 1. By default, the evaluation board is preset at 2.5A LED Current by R25, and R26. Non‐
Dimmable by R22, remove R22 to allow PWM Dimming input. 2. Ensure that the DC source is switched OFF or disconnected. 3. Connect the DC line wires of power supply to “Vin and GND” on the left side of the board. 4. Connect the anode wire of external LED string to LEDA output test point. 5. Connect the cathode wire of external LED string to LEDK output test point. 6. Turn on the main switch. LED string should light up. Bill of Material #
1 2 Name
U3 D1 Quantity
1 1 Part number
3 4 Q1
1 1 DMN10H170SK3-13
4 1 541-0.0ACT-ND
5 6 7 8 9 L1
R12,R17,
R21,R22
R24
R25,R26
R16
C2,C5
C3,C4,
10 C9,C10
11 C11
12 C12
AL9910ASP-13
SBR10U200P5-13
7447709101
P226KCCT-ND
CSRN2512FKR300CT
-ND
2 1 2 311-1.00KCRCT-ND
587-1777-1-ND
587-1404-1-ND
4 1 1 399-1159-1-ND
587-2668-1-ND
Manufacturer
Diodes Inc Diodes Inc Description
LED Driver Diodes Inc Wurth MOSFET 100V/12A
Vishay Panasonic 0Ω Resistor 1/8W 1% 0805 SMD
Stackpole Yageo Taiyo 0.15Ω Resistor 2W 1% 2512 SMD
Taiyo Kemet Taiyo 2.2µF Cer Cap 100V 10% X7R
Super Barrier Rectifiers
100µH, 3.1A Inductor
226kΩ Resistor 1/8W 1% 0805 SMD
1KΩ Resistor 1/8W 1% 0805 SMD
1µF Cer Cap 100V 10% X7R
0.01µF Cer Cap 100V 10% X7R
10µF Cer Cap 10V 10% X7R
Functional Performance Manuf Board Type VIN (VDC) Diodes Inc AL9910AEV2 80 Module Board IIN (A) PIN
(W) VLED
(V) ILED
(A) PLED
(W) 0.95 76.00
26.19
2.59
67.83
ILED
Ripple (%) 20
Efficiency
(%) 89.25 AL9910AEV2 Rev1
August 2014
www.diodes.com
Page 3 of 6
AL9910AEV2 User Guide
High Current Non-Dimmable
Functional Performance Figure 1. Efficiency vs. Vin
Figure 2. LED Current vs. Vin
Figure 3. LED Current (%) vs. Vin
AL9910AEV2 Rev1
August 2014
www.diodes.com
Page 4 of 6
AL9910AEV2 User Guide
High Current Non-Dimmable
Waveform #1 (Gate Duty Cycle ILED=2.5A) => Channel 2: Gate Switching, Channel 3: ILED AL9910AEV2 Board (ILED=2.5A)
Gate Switching Duty Cycle ~50%
ILED=2.5A
Condition: IN=80VDC; OUT=8 LEDs in series / 2.5A
AL9910AEV2 Rev1
August 2014
www.diodes.com
Page 5 of 6
AL9910AEV2 User Guide
High Current and High Voltage LED Driver
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AL9910AEV2 Rev1
August 2014
www.diodes.com
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