ev8003a-q-00a ieee 802.3af/at poe powered device interface controller evaluation board ev8003a-q-00a rev. 1.0 www.monolithicpower.com 1 12/3/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description ev8003a-q-00a evaluation board is designed to demonstrate the capability of mp8003a`s function. mp8003a is an ieee 802.3af/at power-over-ethernet (poe) compliant powered device (pd) interface controller. it has all the functions of ieee 802.3af/at. mp8003a sets 120ma inrush current limit and 840ma operation current limit, a pg signal sets to high to indicate output fully charged, and it pulls low when vout drops in overload condition. mp8003a also provides a t2p signal when it is connected to a type 2 power sourcing equipment (pse). an aux pin of mp8003a provides smoothly power switch from pse to auxiliary wall adaptor. mp8003a also features built in thermal protection and wide input vulo hysteresis. the mp8003a is available in a 10-pin qfn (3mm3mm) package. electrical specifications parameter symbol value units input voltage v in 37-57 v adapter voltage v adapter 12 v output current i out 600 ma features ? compatible with 802.3af/at specifications ? 100v 0.48 ? integrated pass switch ? 120ma inrush current limit ? 840ma operation current limit ? 2-event classification ? auxiliary adaptor oring power supply ? self-driving power good inductor ? open drain type 2 pse indicator ? over temperature protection ? available in qfn-10 (3mmx3mm) package applications ? ieee 802.3af/at-compliant devices ? security cameras ? voip phones ? wlan access points ? iot devices 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. ev8003a-q-00a evaluation board (l x w x h) (6.2cm x 4cm x 1.5cm) board number mps ic number ev8003a-q-00a MP8003AGQ v rtn 20v/div. v pg 20v/div. v dd 20v/div. start-up by pse
ev8003a-q-00a?ieee 802.3 af/at poe pd interface controller evb ev8003a-q-00a rev. 1.0 www.monolithicpower.com 2 12/3/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evaluation board schematic d1 smaj58a 28.7 r2 47uf c2a 100v rtn 0.1uf c2b vout 24.9k r1 0.1uf c1 100v 3k r3 1k r4 d3 stps2h100ay d2 bat46w 100k r5 d5 d4 6.8v 2 1 3 4 df02s cr2 2 1 3 4 df02s cr1 7.5k r6 100k r7 q1 bss63lt1 100k r8 vss vdd t2p class rtn det pg fty aux u1 mp8003a adapter vdd vss vdd vss 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 t2 4 5 8 7 3 2 1 6 rx+ tx- tx+ rx- j1 4 5 8 7 3 2 1 6 rx+ tx- tx+ rx- j2 adp-gnd
ev8003a-q-00a?ieee 802.3 af/at poe pd interface controller evb ev8003a-q-00a rev. 1.0 www.monolithicpower.com 3 12/3/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. ev8003a-q-00a bill of materials qty ref value description package manufacturer part number 2 c1, c2b 0.1uf ceramic cap. 100v, x7r 1206 murata grm319r72a104ka0 1d 1 c2a 47 f 47uf 100v cd284 e- cap. 10x12.5mm dip jianghai 47uf/100v 1 r1 24.9k film res,1% 0603 royal rc0603fr-0724k9l 1 r2 28.7 film res,1% 0603 royal rc0603fr-0728r7l 1 r3 3k film res,1% 0603 royal rc0603fr-073kl 1 r4 1k film res,1% 0603 royal rc0603fr-071kl 3 r5,r7, r8 100k film res,1% 0603 royal rc0603fr-07100kl 1 r6 7.5k film res,1% 0603 royal rc0603fr-077k5l 1 d1 smaj58a tvs sma littelfuse smaj58a 1 d2 bat46w 100v, diode sod-123 diodes bat46w-7-f 1 d3 stps2h10 0ay 2a,100v, schottky sma stmicroelectronics stps2h100ay 1 d4 6.8v diode zener 6.8v sod-123 diodes inc bzt52c6v8 1 t1 749020010 a lan-transformer we- lan smd wrth 749020010a 1 q1 bss63lt1 pnp, 100v, 100ma so t-23 semiconductor bss63lt1g 2 cr1,c r2 df02s 1.0a surface mount glass passivity bridge rectifier diodes inc df02s 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 electr onics rj45-8n4-b 1 u1 mp8003a pd interface qfn(3x3m m) mps MP8003AGQ
ev8003a-q-00a?ieee 802.3 af/at poe pd interface controller evb ev8003a-q-00a rev. 1.0 www.monolithicpower.com 4 12/3/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evb test results vdd=48v, r det = 24.9k ? , r class =28.7 ? , iout=0.6a, t a =25oc, unless otherwise noted. v rtn 5v/div. v pg 5v/div. v dd 20v/div. i in 100ma/div. v rtn 20v/div. v pg 5v/div. v dd 20v/div. i in 100ma/div. v rtn 20v/div. v pg 20v/div. v dd 20v/div. i in 500ma/div. v rtn 20v/div. v pg 20v/div. v dd 20v/div. i in 500ma/div. v rtn 20v/div. v pg 2v/div. i out 500ma/div. v rtn 20v/div. v pg 20v/div. v dd 20v/div. i in 500ma/div. v rtn 20v/div. v pg 20v/div. v dd 20v/div. v rtn 5v/div. v pg 5v/div. v dd 20v/div. i in 500ma/div. v rtn 20v/div. v pg 20v/div. v dd 20v/div. i in 100ma/div.
ev8003a-q-00a?ieee 802.3 af/at poe pd interface controller evb ev8003a-q-00a rev. 1.0 www.monolithicpower.com 5 12/3/2015 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
ev8003a-q-00a?ieee 802.3 af/at poe pd interface controller 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. ev8003a-q-00a rev. 1.0 www.monolithicpower.com 6 12/3/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. quick start guide the board layout accommodates most commonly used components. there are two methods to start ev8003a-q-00a. method 1: 1. connect load to: a. positive (+): vout b. negative (?): rtn 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 33v v in 57v after power up.) 2. turn power supply off. 3. connect power supply terminals to: a. positive (+): vdd b. negative (?): vss 4. connect load to: a. positive (+): vout b. negative (?): rtn 5. turn power supply on after making connections. 7. to use adapter supply function, connect one 12v adapter`s positive terminal to vdd and negative terminal to adp-gnd, then turn on the adapter, the board will prior use adapter to supply the load. if the adaptor voltage is too high, some additional circuit is needed to clamp the aux pin voltage.
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