evq8616-l-6-00a high efficiency, 6a, 6v synchronous stepdown converter evaluation board evq8616l600a rev.1.0 www.monolithicpower.com 1 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. the future of analog ic technology description the evq8616l600a is an evaluation board for the mpq8616gl6, a high efficiency monolithic synchronous stepdown converter. the evaluation board can deliver 6a continuous load current from a 3v to 6v input with excellent load and line regulation. constantontime (cot) control mode provides fast transient response and eases loop stabilization. the evaluation board can be turned on or shut down via a remote on/off input that is reference to ground. this input is compatible with popular logic devices. electrical specification parameter symbol value units input voltage v in 3 C 6 v output voltage v out 1.2 v output current i out 6 a switching frequency f sw 600 khz features ? wide 3v to 6v operating input range ? 6a output current ? 19.8m /15.3m internal power mosfets ? proprietary switching loss reduction technique ? adaptive cot for ultrafast transient response ? 1% reference voltage over 20 to +85 junction temperature range ? programmable soft start time ? prebias start up ? programmable switching frequency from 300khz to 1mhz. ? nonlatch ocp, nonlatch ovp protection and thermal shutdown ? available in a qfn3x4 package applications ? telecom system base station ? networking system ? server ? personal video recorders ? flat panel television and monitors ? distributed power systems all mps parts are lead free and adhere to the rohs directive. for mps gr een status, please visit mps website under products, qu ality assurance page. mps and the future of analog ic technology, ar e registered trademarks of monolithic power systems, inc. evq8616l600a evaluation board (l w h) 8.55 cm 8.55 cm 1. 6cm board number mps ic number evq8616l600a mpq8616gl6
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 2 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evaluation board schematic ns c2h gnd gnd gnd gnd gnd vin freq en vcc pg ss fb sw bst gnd vin gnd vout vout gnd gnd 36vdc 1.2v/6a sw sw sw gnd gnd gnd in in in vcc 5 agnd 1 freq 14 fb 2 ss 3 en 4 pgood 6 bst 7 15-17 8-10 11-13 mpq8616 u1 gnd 22uf c1a 22uf c1b ns c1c 0.1uf c1d 22uf c1e 1nf/50v c7 4.7uf c5 33nf/16v c6 1uf/16v c3 ns c2i 0.1uf/50v c2g 22uf c2a 22uf c2b 22uf c2c ns c2d ns c2e ns c2f 100k r6 100k r5 10 r8 0 r3 0 r9 10k r1 10k r2 1 2 1uh/31.3a l1 sw voutsense gnd2 vinsense gnd_1 en vcc pg gnd_3 360k r7 274k r4 vin gnd vout gnd1 16v/1210 16v/1210 25v/1206 16v/1206 16v/1210 390pf/50v c4 25v 5% 5% 16v/1210 16v/1210 evq8616l600a bill of materials qty ref value description package manufacture part number 7 c1a, c1b, c1c, c2a, c2b, c2c, c2d 22uf ceramic capacitor; 16v;x7r; 1210 murata grm32er71c226k e18l 2 c1d, c2g 0.1uf ceramic capacitor; 50v;x7r;0603; 0603 murata grm188r71h104ka 93d 1 c1e 22uf ceramic capacitor; 25v;x5r 1206 murata grm31cr61e226k e15 4 c2e, c2f,c2h,c2i ns ceramic capacitor; 16v;x7r; 1210 murata grm32er71c226k e18l 1 c3 1uf ceramic capacitor; 16v;x7r;0603; 0603 murata grm188r71c105ka 12d 1 c4 390pf ceramic capacitor; 50v;x7r;0603 0603 lion 0603b391k500t 1 c5 4.7uf ceramic capacitor; 16v;x7r;1206 1206 murata grm31cr71c475k a01 1 c6 33nf ceramic capacitor; 16v;x7r;0603; 0603 murata grm188r71c333ka o1d 1 c7 1nf ceramic capacitor; 50v;x7r;0603; 0603 murata grm188r71h102ka 01d
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 3 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evq8616l600a bill of materials (continued) qty ref value description package manufacture part number 9 en, gnd2, gnd_1, gnd_3, pg, sw, vcc, vinsense, voutsense connector conn/1m m 4 gnd, gnd1, vin, vout connector conn/2m m 1 l1 1uh inductor;1uh; 1.72mohm;31.3a smd toko fdu1250c1r0m 2 r1, r2 10k film resistor;1%; 0603 yageo rc0603fr 0710kl 2 r3, r9 0 film resistor;5%; 0603 yageo rc0603jr07 0rl 1 r4 274k film resistor;1% 0603 yageo rc0603fr0727 4kl 2 r5, r6 100k film resistor;1%; 0603 yageo rc0603fr 07100kl 1 r7 360k film resistor;1% 0603 yageo rc0603fr0736 0kl 1 r8 10 film resistor;1%; 0603 yageo rc0603fr0710r l 1 u1 step down converter qfn 3x4 mps mpq8616gl6
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 4 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results performance waveforms are tested on the evq8616l6 00a. v in = 5v, v out = 1.2v, l = 1.0h, t a = 25c, unless otherwise noted. -0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 3 4 5 6 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0 1 2 3 4 5 6 vin =3.3v vin =4.2v vin =5v vin =6v 0 100 200 300 400 500 600 86 87 88 89 90 91 92 93 94 95 96 97 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 line regulation (%) input voltage (v) power loss (mw) outpu t current(a) power loss load regulation line regulation outpu t curren t (a) efficiency (%) outpu t current(a) efficiency v in =6v v in =5v v in =4.2v v in =3.3v v in =3.3v v in =4.2v v in =5v v in =6v load regul ation (%) v in =6v v in =5v v in =4.2v v in =3.3v i out =0a i out =3a i out =6a
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 5 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the evq8616l6 00a. v in = 5.0v, v out =1.2v, l = 1.0h, t a = 25c, unless otherwise noted.
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 6 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the evq8616l6 00a. v in = 5.0v, v out =1.2v, l = 1.0h, t a = 25c, unless otherwise noted.
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 7 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the evq8616l6 00a. v in = 5.0v, v out =1.2v, l = 1.0h, t a = 25c, unless otherwise noted.
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 8 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. printed circuit board layout figure 1: top silk layer figure 2: top layer figure 3: inner layer1 figure 4: inner layer2
evq8616l600a C evb description evq8616l600a rev.1.0 www.monolithicpower.com 9 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. figure 5: bottom layer figure 6: bottom silk layer
evq8616l600a C evb description notice: the information in this document is subject to cha nge without notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights are not infringed upo n when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. evq8616l600a rev.1.0 www.monolithicpower.com 10 1/30/2013 mps proprietary information. patent prote cted. unauthorized photocopy and duplication prohib ited. ? 2013 mps. all rights reserved. quick start guide 1. connect the positive and negative terminals of t he load to the vout and gnd pins respectively. 2. preset the output of power supply between 3v and 6v, and then turn off the power supply. 3. connect the positive and negative terminals of t he power supply output to the vin and gnd pins respectively: 4. turn the power supply on. the mpq8616gl6 will a utomatically start up. 5. to use the enable function, apply a digital inpu t to the en pin. drive en higher than 2v to turn on the regulator or less than 0.4v to turn it off. 6. use r1 and r2 to set the output voltage within v fb=0.6v. follow the application information section in the device datasheet to select the prope r value of r1, r2, inductor and output capacitor values when output voltage is changed. 7. if low ripple at light loads is needed, then use toko 1.2uh or 1.5uh l1. but with the larger l1, the transient response peak to peak value will beco me larger too.
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