al9910aev2 user guide 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 ? 80v dc ? 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 ? 80v dc ? (dc+, ? dc \ ) ?? led ? outputs: ?? led+ ? (red), ? led \? (black) ? ? ? ? dc- dc+ led+ led-
al9910aev2 user guide high current and high voltage led driver al9910aev2 rev1 page 2 of 6 august 2014 www.diodes.com 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 user guide high current non-dimmable 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 ? 100h, 3.1a inductor 5 ? r12,r17, r21,r22 4 ? 541-0.0act-nd vishay ? 0 ? resistor 1/8w 1% 0805 smd 6 ? r24 1 ? p226kcct-nd panasonic ? 226k ? resistor 1/8w 1% 0805 smd 7 ? r25,r26 2 ? csrn2512fkr300ct -nd stackpole ? 0.15 ? resistor 2w 1% 2512 smd 8 ? r16 1 ? 311-1.00kcrct-nd yageo ? 1k ? resistor 1/8w 1% 0805 smd 9 ? c2,c5 2 ? 587-1777-1-nd taiyo ? 1f cer cap 100v 10% x7r 10 ? c3,c4, c9,c10 4 ? 587-1404-1-nd taiyo ? 2.2f cer cap 100v 10% x7r 11 ? c11 1 ? 399-1159-1-ND kemet ? 0.01f cer cap 100v 10% x7r 12 ? c12 1 ? 587-2668-1-nd taiyo ? 10f cer cap 10v 10% x7r ? ? ? functional ? performance ? ? manuf ? board ? type ? vin ? (v dc ) ? i in ? (a) ? p in (w) ? v led (v) ? i led (a) ? p led (w) ? i led ripple ? (%) ? efficiency (%) ? diodes ? inc ? al9910aev2 ? module ? board ? 80 ? 0.95 ? 76.00 26.19 2.59 67.83 20 89.25 ? ?
al9910aev2 user guide high current non-dimmable al9910aev2 rev1 page 4 of 6 august 2014 www.diodes.com functional ? performance ? figure 1. efficiency vs. vin figure 2. led current vs. vin figure 3. led current (%) vs. vin ? ? ? ? ? ? ? ? ? ? ?
al9910aev2 user guide high current non-dimmable 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=2.5 a condition: in=80vdc; out=8 leds in series / 2.5a gate switching duty cycle ~50%
al9910aev2 user guide 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 rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her 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 repres ented 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 unauthoriz ed 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 mo re 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 fo rmat 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 exec utive officer of diodes incorporated. as used herein: a. life support devices or syst ems 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 prop erly 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-c ritical, life support devices or systems. copyright ? 2014, diodes incorporated www.diodes.com
|
