ev8007-v-00a ieee 802.3af poe pd interface with 13w primary-side regulated flyback converter ev8007-v-00a rev. 1.0 www.monolithicpower.com 1 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology tm tm description ev8007-v-00a evaluation board is designed to demonstrate the capability of MP8007`s primary-side regulate fly-back function. this board supports ieee 802.3af poe compliant powered device with pd interface and flyback power converter. it is targeted for isolated 13w poe application. the pd interface has all the functions of ieee 802.3af, including detection, classification, inrush current, operation current limit as well as 100v hot-swap mosfet. the dcdc converter uses fixed peak current and variable frequency discontinuous conduction mode (dcm) to regulate constant output voltage. the MP8007 is available in qfn-28 (4mmx5mm ) package. electrical specifications parameter symbol value units input voltage v in 37-57 v adapter voltage v adaptor 24-57 v output voltage v out 12 v output current i out 1 a features ? primary-side regulate flyback without opto-coupler feedback ? integrated 180v switching power mosfet ? internal 80v startup circuit ? up to 3a programmable current limit ? discontinuous conduction work mode ? include olp, ovp, open circuit and thermal protection ? minimal external components count ? available in qfn-28 4mmx5mm package applications ? security camera ? voip phones ? wlan access points ? general flyback converter all mps parts are lead-free, halogen free, and adhere to the rohs directive. for mps green status, pl ease visit mps website under qualit y assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. ev8007-v-00a evaluation board (l x w x h) (11.04cm x 4.52cm x 1.5cm) board number mps ic number ev8007-v-00a MP8007 40 45 50 55 60 65 70 75 80 85 90 10 100 1000
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 2 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm evaluation board schematic pgnd 12v@1a 200v d2 pgnd pgnd vognd vout 1000p/2000v c7 np2 np1 ns t3 220uf c2c pgnd 56.2k r1 20k r2 sbr8u60p5 d1 22uf c2a vognf vognd 20 r9 1nf c6 22uf c2b vcc d6 10k r4 10nf c4 1k r10 24.9k r5 0.1uf c5 d3 41.2 r6 d4 bat46w d5 ss1h10 7.5k r8 52.3k r3 1uf c3 adapter vin vss pgnd det class vss t2p pg fty aux mode ilim vcc fb1 sw MP8007 u1 3k r7 47uf c1a 2.2uf c1b d7 bzt52c15 nc r12 nc d8 vcc pgnd
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 3 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm ev8007-v-00a bill of materials qty ref value description package manufacturer part number 1 c1a 47 f 47 f 100v cd284 e- cap. 10x12.5mm dip jianghai 47 f/100v 1 c1b 2.2 f ceramic cap, 100v, x7r 1210 murata grm32er72a225ka35l 2 c2a,c2 b 22 f ceramic cap.,25v,x7r 1210 murata grm32er71e226ke15l 1 c2c 220 f 220 f 25v cd284 e- cap,8x12.5mm dip jianghai 220 f/25v 1 c3 1 f ceramic cap,10v,x7r 603 murata grm188r71a105ka61d 1 c4 10nf ceramic cap,100v,x7r 805 murata grm216r72a103ka01d 1 c5 0.1 f ceramic cap. 100v, x7r 1206 murata grm319r72a104ka01d 1 c6 1nf ceramic cap,100v,x7r 603 murata grm188r72a102ka01d 1 c7 1nf ceramic cap. 2000v x7r 1808 murata gr442qr73d102kw01l 1 r1 56.2k film res,1% 603 royal rc0603fr-0756k2l 1 r2 20k film res,1% 603 royal rc0603fr-0720kl 1 r3 52.3k film res,1% 603 royal rc0603fr-0752k3l 1 r4 10k film res,1% 1206 royal rc1206fr-0710kl 1 r5 24.9k film res,1% 603 royal rc0603fr-0724k9l 1 r6 41.2 film res,1% 603 royal rc0603fr-0741r2l 1 r7 3k film res,1% 603 royal rc0603fr-073kl 1 r8 7.5k film res,5% 603 royal rc0603jr-077k5l 1 r9 20 film res,1% 805 royal rc0805fr-0720rl 1 r10 1k film res,1% 603 royal rc0603fr-071kl 1 r11 0 film res,1% 1206 royal rc1206fr-070rl 0 r12 nc 1 d1 sbr8u60p5 8a 60v super barrier rectifier powerdi 5 diodes sbr8u60p5 1 d2 bav21 switching diode 200v 200mw sod-123 diodes bav21w-7-f 1 d3 smaj58a tvs sma little fuse smaj58a 1 d4 bat46w 100v, diode sod-123 diodes bat46w-7-f 1 d5 ss1h10 100v, schottky do-214ac vishay ss1h10-e3/61t 1 d6 1n4148 switching diode 75v 250mw sod-323 diodes 1n4148ws-7 1 d7 bzt52c15 zener diode, 15v sod-123 diodes bzt52c15 0 d8 nc 0 t1 nc 1 t2 749020011a lan-transformer we- lan smd wurth 749020011a
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 4 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm ev8007-v-00a bill of materials (continued) qty ref value description package manufacturer part number 1 t3 47.4 h np:ns:na=22:10:6, lp=47.4 h, core=ee13 ee13 emei poe12w12v 2 j1,j2 rj45-8n4-b rj jack / signal line emi/rfi filters 6 trmn brd/cble grnd 8 pin block inductor rj45-tab tyco rj45-8n4-b 2 cr1, cr2 df02s 1.0a surface mount glass passivated bridge rectifier df-s diodes inc df02s 1 u1 MP8007 ieee 802.3af compatible psr flyback pd device qfn-28 mps MP8007gv
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 5 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm evb test results v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted. load current (ma) load current (ma) load regulation line regulation efficiency vs. load current v out =12v input voltage (v) 40 45 50 55 60 65 70 75 80 85 90 10 100 1000 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0 200 400 600 800 1000 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 35 40 45 50 55 60 v in =37v v in =48v v in =57v v in =37v v in =48v v in =57v i out =0.5a i out =1a case temperature rise load current (a) 0 5 10 15 20 25 30 35 40 45 0 0.2 0.4 0.6 0.8 1 1.2 v in =48 v in =37 v in =57
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 6 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm evb test results (continued) v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted. i pri 2a/div. v sw 50v/div. v out 5v/div. v in 50v/div. i pri 2a/div. v sw 50v/div. out 5v/div. v in 50v/div. v sw 50v/div. i pri 2a/div. i pri 2a/div. v in 20v/div. v out /ac 200mv/div. v sw 50v/div. i pri 2a/div. v in 20v/div. v out /ac 200mv/div. v sw 50v/div. i pri 2a/div. v in 20v/div. v out /ac 200mv/div. v pg 20v/div. v out 10v/div. v in 20v/div. i pri 2a/div. v pg 20v/div. v out 10v/div. v in 20v/div. i pri 2a/div. v pg 5v/div. v out 10v/div. v in 20v/div. i pri 2a/div. v pg 5v/div. v out 10v/div. v in 20v/div. v rtn 20v/div. v rtn 20v/div. v
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 7 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm evb test results (continued) v in =48v, v out =12v, i out =1a, t a =25oc, unless otherwise noted. i pri 2a/div. v sw 50v/div. v out 5v/div. v fb1 2v/div. i pri 2a/div. v sw 50v/div. v out 5v/div. v fb1 2v/div. i pri 2a/div. v sw 50v/div. v out 5v/div. v in 50v/div. i out 500ma/div. v out /ac 200mv/div. i out 500ma/div. v out /ac 1v/div. i out = 1a i out = 10ma i pri 2a/div. v sw 50v/div. v out 5v/div. v in 50v/div. i pri 2a/div. v sw 50v/div. v out 5v/div. v in 50v/div.
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 8 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm printed circuit board layout figure 1 top silk layer figure 2: top layer figure 3: bottom layer
ev8007-v-00a?primary-side regulate flyback converter evb ev8007-v-00a rev. 1.0 www.monolithicpower.com 9 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm figure 4: bottom silk layer
ev8007-v-00a?primary-side regulate flyback converter evb 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. ev8007-v-00a rev. 1.0 www.monolithicpower.com 10 8/13/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. tm quick start guide the output voltage of this board is set to 12v. the board layout accommodates most commonly used components. there are two methods to start MP8007. method 1: 1. connect load to: a. positive (+): vout b. negative (?): vognd 2. plug the cable coming from the pse into the ethernet jack j1. the board will automatically startup. method 2: 1. preset power supply to 40v v in 57v. (it can work in 37v v in 57v after power up.) 2. turn power supply off. 3. connect power supply terminals to: a. positive (+): vin b. negative (?): vss 4. connect load to: a. positive (+): vout b. negative (?): vognd 5. turn power supply on after making connections. 6. the MP8007 is enabled on the evaluation board once vin is applied. 7. MP8007 can supply v cc through internal high voltage ldo, d6 and r10 can be removed to save bom cost, while it may lead to about 0.2% efficiency decreasing. 8. to use adapter supply function, connect the adapter`s positive terminal to vin and negative terminal to adpgnd, then turn on the adapter, the board will prior use adapter to supply itself.
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