EV8004-QW-00A 13w 802.3af poe powered device interface with flyback dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 1 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the mp8004 is an integrated ieee 802.3af poe compliant powered device (pd) power supply solution. it includes a pd interface and an isolated/non-isolated flyback converter. the pd interface includes detection and classification modes as well as a 100v output pass device. inrush current limit is included to slowly charge the input capacitor. the dc-dc converter includes a 150v power switch and is capable of delivering 13w output power with high efficiency. it has an internal soft-start, auto-retry, over current, short circuit, and over voltage protection. it can also skip cycles during light load condition. the mp8004 is available in thermally enhanced 4x6mm qfn20 package. electrical specifications parameter symbol value units input voltage vin 36-57 (1) v output voltage vout 12 v output current iout 1 a frequency fsw 275 khz note: 1) it requires higher than 42v input for startup, after startup, it can work down to 36v. meets ieee 802.3af specifications features ? meets ieee 802.3af specifications ? 100v, 1 ? integrated pass switch ? 420ma dc input current limit ? 150v, 0.45 ? integrated switch for power converter ? cycle-by-cycle switching current limit ? integrated 100v startup circuit ? programmable switching frequency ? duty cycle limiting with line feed forward ? internal slope compensation ? ocp, scp and otp protection ? 4x6mm qfn20 package applications ? voip telephones ? security camera systems ? wireless access points/wireless lan ? small-cell base stations ? safety backup power ? remote internet power all mps parts are lead-free and adhere to the rohs directive. for mps green status, please visit mps website unde r products, quality assurance page. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. EV8004-QW-00A evaluation board (l x w x h) (12.5cm x 4cm x 1.5cm) board number mps ic number EV8004-QW-00A mp8004gqw load current (ma) efficiency vs. load current 0 10 20 30 40 50 60 70 80 90 0 200 400 600 800 1000 v in =48v v in =57v v in =37v
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 2 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evaluation board schematic vss 0 r19 2 1 3 4 cr2 2 1 3 4 cr1 tct1 1 td4- 12 td4+ 11 tct4 10 tct3 7 td3- 9 td2- 6 td3+ 8 td1- 3 td2+ 5 td1+ 2 mx4- 13 mx4+ 14 mct4 15 mct3 18 mx3- 16 mx2- 19 mx3+ 17 mx1- 22 mx2+ 20 mx1+ 23 mct1 24 tct2 4 mct2 21 1:1 1:1 1:1 1:1 t2 vin vss 4 5 8 7 rx+ 3 tx- 2 tx+ 1 rx- 6 j1 4 5 8 7 rx+ 3 tx- 2 tx+ 1 rx- 6 j2
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 3 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. EV8004-QW-00A bill of materials qty ref value description package manufacturer part number 2 c1,c6 0.1 f ceramic cap. 100v, x7r 1206 murata grm319r72a104ka01d 1 c2a 100 f 100v electrolytic dip rubycon 100yxg100mefc10x23 2 c2b 2.2 f ceramic cap. 100v, x7r 1210 murata grm32er72a225ka35l 2 c3a,c3b 22 f ceramic cap, 25v, x5r 1210 murata grm32er61e226ke15l 1 c3c 220 f 35v electrolytic dip chemi-con eky-350ec3221mh15d- nd 3 c4,c7,c9 100pf ceramic cap,50v,c0g 0603 murata grm1885c1h101ja01d 2 c5, c8 1 f ceramic cap,16v,x7r 0603 murata grm188r71c105ka12d 1 c10 1000pf ceramic cap, 2000v x7r 1808 murata gr442qr73d102kw01l 1 c11 1nf ceramic cap, 50v, c0g 0603 murata grm1885c1h102ja01d 1 c12 22nf ceramic cap, 25v, x7r 0603 murata grm188r71e223ka01d 0 c13 nc 1 r1 30k ? film res, 1% 0603 yageo rc0603fr-0730kl 1 r2 1k ? film res, 1% 0603 yageo rc0603fr-071kl 1 r3 20k ? film res, 1% 0603 yageo rc0603fr-0720kl 1 r4 26.1k ? film res, 1% 0603 yageo rc0603fr-0726k1l 1 r5 357 ? film res, 1% 0603 yageo rc0603fr-07357rl 1 r6 178k ? film res, 1% 0603 yageo rc0603fr-07178kl 2 r7, r11 100k ? film res, 1% 0603 yageo rc0603fr-07100kl 1 r8 180k ? film res, 1% 0603 yageo rc0603fr-07180kl 1 r9 10k ? film res, 1% 1206 yageo rc1206fr-0710kl 1 r10 10k ? film res, 1% 0603 yageo rc0603fr-0710kl 1 r12 220k ? film res, 1% 0603 yageo rc0603fr-07220kl 1 r13 100 ? film res, 1% 0603 yageo rc0603fr-07100rl 1 r14 10 ? film res, 1% 0603 yageo rc0603fr-0710rl 1 r15 3k ? film res, 1% 0603 yageo rc0603fr-03kl 1 r16 620 ? film res, 1% 0603 yageo rc0603fr-07620rl 1 r17 9.09k ? film res, 1% 0603 yageo rc0603fr-079k09l 1 r18 78.7k ? film res, 1% 0603 yageo rc0603fr-0778k7l 1 r19 0 ? film res, 1% 1206 yageo 1821cr06t05nn0r 1 d1 smaj58a tvs sma littelfuse smaj58a 1 d2 b260a diode schottky, 60v, 2a sma diodes inc b260a 3 d3, d4, d8 1n4148 diode switch, 75v, 200mw sod-323 diodes inc 1n4148ws-7-f 1 d5 bav21w diode switch, 200v, 250mw sod-123 diodes inc bav21w-7-f
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 4 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. EV8004-QW-00A bill of materials (continued) qty ref value description package manufacturer part number 1 d6 6.2v diode zener, 6.2v, 500m w sod-123 diodes inc bzt52c6v2-7 1 d7 4.7v diode zener, 4.7v 500mw sod-123 diodes inc bzt52c4v7-13 1 q1 2n7002 n-fet sot-23 diodes inc 2n7002-7-f 1 u1 mp8004 pd controller qfn20 mps mp8004gqw-z 1 u2 pc357 photcoupler, 1-ch 4-smd sharp pc357nt 1 u3 zr431 reg vlt adj 1.24v sot-23 zetex zr431lf01 core=ee13, np:ns:na=22:9:6, lp=90uh dip emei 1 t1 (2) transformer wurth 12v/1a transformer lp=100 h, np: ns: na=4.5:1.5:1 smd wurth electronik 750311424 1 t2 749020011a lan-transformer we-lan smd wrth elektronik 749020011a 2 j1,j2 rj45-8n4-b rj jack / signal line emi/rfi filters 6 trmn brd/cble grnd 8 pin block inductor rj45-tab down tyco electronics rj45-8n4-b 2 cr1, cr2 df02s 1.0a surface mount glass passivated bridge rectifier df-s diodes inc df02s note: 2) on standard evb, the transformer is from emei. there is one layout option for 750311424 transformer on evb.
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 5 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evb test results v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted.
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 6 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evb test results (continued) v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted. v in 50v/div. v sw 50v/div. v out/ ac 10mv/div. i trans-pri 500ma/div. v out/ ac 100mv/div. i out 500ma/div. v out/ ac 50mv/div. i out 500ma/div. v in 50v/div. v sw 50v/div. v out/ ac 100mv/div. i trans-pri 1a/div. i trans-pri 1a/div. steady state i out = 0a steady state i out = 1a v out 5v/div. v in 50v/div. v rtn 50v/div. v in startup i out = 0a v in startup i out = 1a v in shutdown i out = 0a v in shutdown i out = 1a scp entry i out = 0a to short i trans-pri 1a/div. v out 5v/div. v in 50v/div. v rtn 50v/div. i trans-pri 1a/div. v out 5v/div. v in 50v/div. v sw 50v/div. i trans-pri 1a/div. v out 5v/div. v in 50v/div. v sw 50v/div. i trans-pri 2a/div. v out 5v/div. v in 50v/div. v sw 100v/div.
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 7 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evb test results (continued) v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted. v in 50v/div. v sw 100v/div. v out 5v/div. i trans-pri 2a/div.
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board EV8004-QW-00A rev. 1.2 www.monolithicpower.com 8 10/27/2015 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 layer
EV8004-QW-00A?13w 802.3a f poe pd interface with dc-dc converter ev board 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. EV8004-QW-00A rev. 1.2 www.monolithicpower.com 9 10/27/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. quick start guide 1. connect the load between vout (positive) and gnd (negative) terminals. 2. plug the cable coming from the pse, carrying the i nput voltage for the pd, into the ethernet jack j1. the board will automatically startup. 3. external dc supply can also be used to evaluate EV8004-QW-00A. preset the power supply output to 42v ? 57v and turn off the power supply. connect the positive terminal of the power supply output to the vin pin and the negative terminal of the power supply output to the vss pin. turn the power supply on. the board will automatically startup.
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