EV4008-S-00A high-brightness high-current accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 1 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the EV4008-S-00A is designed to demonstrate the capabilities of mp4008. the mp4008 is a current mode controller designed for driving the high brightness light emitting diodes (leds) with wide input voltage 9v-28v. it can be used both in boost and sepic topologies. with a 20-48v power supply pvin and a 9-28v ic supply for mp4008, the evaluation board can drive a single led string with the led current regulated to 350ma and vled voltage up to 70v. apply a pwm dimming signal to do pwm dimming. the over-voltage protection, short led protection, short inductor/diode protection and over current protection are integrated. electrical specification parameter symbol value units power supply voltage pvin 20-48 v ic supply voltage vin 9-28 v led voltage v led 70(max) v led current i led 350 ma switching frequency fs 180 khz over voltage protection point v ovp 81 v features ? constant-current wled driver controller ? 280mv feedback voltage with 1.8% accuracy ? 9v-28v input voltage ? leading edge blanking for current sense ? frequency fixed 180khz ? fast pwm dimming ? soft start ? over voltage protection ? short led protection ? short output protection ? over current protection ? short inductor/diode protection ? vin uvlo ? thermal shutdown ? available in soic-8 package applications ? lcd backlighting ? dc/dc led driver ? general illumination all mps parts are lead-free, halogen free, and adhere to the rohs directive. fo r mps green status, please visit mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. warning: although this board is designed to satisfy safet y requirements, the engineering pr ototype has not been agency approved. therefore, all testing should be performed using an isolation transformer to provide the ac input to the prototype board.
EV4008-S-00A high-brightness hi gh-accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 2 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. EV4008-S-00A evaluation board (l x w x h) 7.5cm x 6..5cm x 1.5cm board number mps ic number EV4008-S-00A mp4008gs evaluation board schematic gat e 4 cs 3 gnd 2 vin 1 pwm 5 comp 6 fb 7 ovp 8 u1 mp4008 pvin pgnd gnd ns r2 100v/9a 2 3 1 m1 ap18t10agh pvin vin 1 2 d3 ns 2 1 2.2uf/50v c9 vin=9-28v vin gnd pgnd 20k r14 2 1 1nf c10 sgnd pwm pgnd led+ 2 1 100pf c5 sgnd gate pgnd led- sgnd 1 2 d4 1n4148 pgnd gat e vin=20-48v 70v/350ma 200m r6 1 2 d2 1n4148 sgnd sgnd 2 1 1nf c6 sgnd 50v 1 2 100uf c1 2 1 2.2uf/50v c2 2 1 6.8nf c11 3.6k r16 1k r7 4 1, 2, 3 5, 6, 7, 8 m2 1 2 22uf/100v c4 1 2 1uf/100v c3 1k r13 200m r5 10.5k r8 300k r1 1.6 r10 1.6 r11 ns r12 2k r9 2 1 220nf c8 2 1 6.8nf c7 2 1 100uh/2.4a l1 1 2 d1 100v/2a 10 r3 100 r4 100 r15
EV4008-S-00A high-brightness hi gh-accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 3 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. bill of materials qty ref value description package manufacture manufacture_pn 1 c1 100 f electrolytic capacitor;50v dip cd287-50v100 2 c2 2.2 f/50v ceramic capacitor; 50v;x7r; 1206 1210 tdk c3225x7r1h225k 1 c3 1 f/100v ceramic capacitor; 100v;x7r; 1210 1210 murata grm32er72a105ka01l 1 c4 22 f/100v electrolytic capacitor;100v dip cd263-100v22 1 c5 100pf ceramic capacitor; 50v;c0g; 0603 0603 tdk c1608cog1h101j 2 c6, c10 1nf ceramic capacitor; 50v;x7r; 0603; 0603 tdk c1608x7r1h102k 2 c7, c11 6.8nf ceramic capacitor; 50v;x7r; 0603 0603 lion 0603b682k500t 1 c8 220nf ceramic capacitor; 16v;x7r; 0603; 0603 murata grm188r71c224ka01d 1 c9 2.2 f/50v ceramic capacitor; 50v;x7r; 1206 1206 murata grm31cr71h225ka88l 1 d1 b2100 shottky diode;100v;2a; smb diodes b2100 2 d2, d4 1n4148w diode;75v;0.15a; sod-123 diodes 1n4148w 1 d3 ns 2 jr1,jr2 0 film resistor ;5% 1206 yageo rc1206jr-070r 1 l1 100 h/2.4a inductor;100 h;220m;2.4a smd wurth 74477020 1 m1 ap18t10agh mosfet;100v; 160;9.6;9 to-252 apec ap18t10agh 1 m2 am4490n n-channel mosfet;100v;92;12.5; 5.2 so-8 analog power am4490n 1 r1 300k resistor;1%;1/4w 1206 yageo rc1206fr-07300kl 2 r2, r12 ns 1 r3 10 film resistor;5%; 0603 yageo rc0603jr-0710rl 2 r4, r15 100 film resistor;1% 0603 yageo rc0603fr-07100rl 2 r5, r6 200m film resistor;1%; 1206 yageo rl1206fr-070r2l 2 r7, r13 1k film resistor;5%; 0603 yageo rc0603fr-071kl 1 r8 10.5k film resistor;1% 0603 yageo rc0603fr-0710k5l 1 r9 2k film resistor;1%; 0603 yageo rc0603fr-072kl 2 r10, r11 1.6 film resist or;1% 1206 yageo rc1206fr-071r6l 1 r14 20k film resistor;1%;1/10w; 0603 yageo rc0603fr-0720kl 1 r16 3.6k film resistor;5 %;1/10w 0603 liz cr0603ja0362g 1 u1 mp4008gs mp4008 so-8 mps mp4008gs
EV4008-S-00A high-brightness hi gh-accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 4 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evb test results pvin=20-48v, vin = 12v, vled= 70v, iled=350ma, t a = 25oc, unless otherwise noted.
EV4008-S-00A high-brightness hi gh-accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 5 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) v in =12v, pv in =20v, v led =70v, iled=350ma, l=100 h, t a =25c, unless otherwise noted.
EV4008-S-00A high-brightness hi gh-accuracy wled controller EV4008-S-00A rev.1.0 www.monolithicpower.com 6 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2?top layer figure 3?bottom silk layer figure 4?bottom layer
EV4008-S-00A high-brightness hi gh-accuracy wled controller notice: the information in this document is subject to change wi thout notice. please contact m ps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. EV4008-S-00A rev.1.0 www.monolithicpower.com 7 6/26/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. quick start guide 1. preset the led string forward voltage to 70v, connect the anode of led string to ?led+? and the cathode of led string to ?led-?; 2. preset the pvin supply voltage to 20-48v, turn off the power supply, connect the power supply to ?pvin?; 3. preset the vin supply voltage 9-28v, turn off the power supply, connect the power supply to ?vin?; 4. connect the ?pwm? connector to the pwm dimming signal; the high level of pwm signal is in the range of 1.5v-5v, and the low level is in the range of 0-0.4v; 5. turn on pvin supply, set pwm signal to high level, turn on vin supply, the led string should be ignited. 6. to demo the pwm dimming function: connect the ?pwm? connector to an pwm signal; the frequency of the pwm signal is in the range of 100hz to 2khz, the high level of the pwm signal is 1.5v-5v and low level is 0-0.8v. adjust the duty of the pwm signal; the led current will follow the duty of the pwm dimming signal.
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