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High Current and High Voltage LED Driver AL9910AEV2 Rev1 Page 1 of 6 August 2014 www.diodes.com 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  High output current, 2.5A  ~ 90% efficiency  DC input voltage range up to 80V  Low BOM cost  PWM Dimmable

Applications

 Signage and decorative LED lighting  High current DC‐DC LED driver  High intensity lamps  Street lamps AL9910A EV2 Specifications Parameter Value Input Voltage 40 to 80VDC Output Power 50 – 60W LED Current 2.5A (Adjustable) LED Voltage 25V Efficiency ~90% Number of LEDs (2) sets of 8 LEDs in parallel (Under Tested) XY Dimension 3.00 ” x 3.25” ROHS Compliance Yes Evaluation Board Figure 1: Top View Connection Instructions Input Voltage: 40 to 80VDC (DC+, DC‐) LED Outputs: LED+ (Red), LED‐ (Black) DC- DC+ LED+ LED-

AL9910AEV2 Rev1 Page 3 of 6 August 2014 www.diodes.com 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 # Name Quantity Part number Manufacturer Description

1 U3 1 AL9910ASP-13 Diodes Inc LED Driver

2 D1 1 SBR10U200P5-13 Diodes Inc Super Barrier Rectifiers

3 Q1 1 DMN10H170SK3-13 Diodes Inc MOSFET 100V/12A

4 L1 1 7447709101 Wurth 100µH, 3.1A Inductor R12,R17, R21,R22 4 541-0.0ACT-ND Vishay 0Ω Resistor 1/8W 1% 0805 SMD

6 R24 1 P226KCCT-ND Panasonic 226kΩ Resistor 1/8W 1% 0805 SMD

7 R25,R26 2

-ND Stackpole 0.15Ω Resistor 2W 1% 2512 SMD 8 R16 1 311-1.00KCRCT-ND Yageo 1KΩ Resistor 1/8W 1% 0805 SMD

9 C2,C5 2 587-1777-1-ND Taiyo 1µF Cer Cap 100V 10% X7R

C3,C4, C9,C10 4 587-1404-1-ND Taiyo 2.2µF Cer Cap 100V 10% X7R 11 C11 1 399-1159-1-ND Kemet 0.01µF Cer Cap 100V 10% X7R

12 C12 1 587-2668-1-ND Taiyo 10µF Cer Cap 10V 10% X7R

(VDC) IIN (A) PIN (W) VLED (V) ILED (A) PLED (W) ILED Ripple (%) Efficiency (%) Diodes Inc AL9910AEV2 Module Board

AL9910AEV2 Rev1 Page 5 of 6 August 2014 www.diodes.com Waveform #1 (Gate Duty Cycle ILED=2.5A) => Channel 2: Gate Switching, Channel 3: ILED AL9910AEV2 Board (ILED=2.5A) ILED=2.5A Condition: IN=80VDC; OUT=8 LEDs in series / 2.5A Gate Switching Duty Cycle ~50%

High Current and High Voltage LED Driver AL9910AEV2 Rev1 Page 6 of 6 August 2014 www.diodes.com IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KI ND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPL IED 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 de scribed herein; neither does Diodes Incorpora ted convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or pr oducts 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 what soever in respect of any prod ucts purchased through unauthorized sales channel. Should Customers purchase or use Diodes In corporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and it s representatives harmless against all cl aims, damages, expenses, and attorney fee s 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 mu ltiple languages for reference. Only the English version of t his document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifica lly not authorized for use as critical co mponents 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 dev ice or system whose failure to perform can be reasonably expect ed 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 dev ices or systems, and acknowledge and agree that they are solely respon sible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such sa fety-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 repres entatives against any damages aris ing out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2014, Diodes Incorporated www.diodes.com