1 description lt 4276, lt 4321 poe pd with synchronous flyback and ideal diode bridge demonstration circuit 2046 a-a is a poe powered device (pd) with an isolated power supply using synchronous flyback topology, featuring the lt ? 4276 and ideal diode bridge controller (lt4321). the LT4276 provides ieee802.3af ( poe, type 1), ieee802.3at ( poe + , type 2), and ltpoe ++ ? pd interfacing and power supply control. when the pd is fully powered, the pd interface switches power over from the power sourcing equipment ( pse) to the switcher through an external, low resistance, high power n-channel fet. the highly integrated LT4276 controls a high power, small- sized power supply that utilizes a highly efficient flyback l , lt, ltc, ltm, linear technology and the linear logo are registered trademarks and ltpoe ++ is a trademark of linear technology corporation. all other trademarks are the property of their respective owners. p erformance s ummary boar d p hotos topology with synchronous rectification. the lt4321 provides further efficiency improvement by minimizing the bridge losses. the dc2046a-a supplies a 3.3 v output at up to 6.8 a. it also demonstrates the use of an optional auxiliary power supply input of 48 v. when present, the auxiliary supply becomes the dominant supply over poe to provide power. design files for this circuit board are available at http://www . linear.com/demo/dc2046a-a specifications are at t a = 25c top side bottom side parameter conditions value port voltage (v port ) at ethernet port 37v to 57v auxiliary voltage from aux + to aux C terminals 37v to 57v output voltage 3.3v ( typ ) output current 6.8a (max) output voltage ripple v port = 42.5v, i out = 6.8a 25mv p-p ( typ ) output regulation 0.15% ( typ ) efficiency v port = 50v, i out = 6.8a, end to end 90% ( typ ) switching frequency 250khz ( typ ) dc2046aaf demo manual dc2046a-a
2 t ypical p erformance c haracteristics figure 2. efficiency (end to end) figure 3. output voltage regulation figure 1. thermal pictures, v port = 57v, i out = 6.8a top side bottom side load current (a) 0.7 efficiency (%) 92 90 86 82 80 76 74 88 84 78 72 4.9 3.5 6.3 dc2047a f02 7 4.2 2.1 2.8 1.4 5.6 v port = 42.5v v port = 50v v port = 57v load current (a) 0.7 v out (v) 3.6 3.3 3.2 3.5 3.4 3.1 4.9 3.5 6.3 dc2047a f03 7 4.2 2.1 2.8 1.4 5.6 v port = 42.5v v port = 50v v port = 57v dc2046aaf demo manual dc2046a-a
3 t ypical p erformance c haracteristics figure 4. stresses (v port = 57v, 3.3v/ 6.8a) figure 6. load transient response (v port = 42.5v, 3.8a to 6.8a to 3.8a) figure 5. output voltage ripple (v port = 42.5v, 3.3v/6.8a) figure 7. gain and phase margin of the flyback loop (v port = 42.5v, 3.3v/0.7a) dc2046aaf demo manual dc2046a-a
4 quick s tart p roce d ure demonstration circuit 2046 a-a is easy to set up to evalu- ate the performance of the LT4276 in a poe + application. refer to figure 8 for proper equipment setup and follow the procedure below: note: when measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. measure the output voltage ripple by touching the probe tip and probe ground directly across the +v out and Cv out terminals. see figure 9 for proper scope probe technique. 1. place test equipment ( voltmeter, ammeter, power sup - plies, and electronic load) as shown in figure 8. 2. input supplies: a. connect a poe + capable pse with a cat -5 cable to the rj45 connector, j1. see figure 8. b . or, connect a 37 v to 57 v capable power supply ( power supply in figure 8) across vportp and vportn. c. if evaluating the auxiliary power supply ( auxiliary supply in figure 8), connect a 37 v to 57 v capable power supply across aux + to aux C . 3. check for the proper output voltage of 3.3v. 4. once the proper output voltage is confirmed, adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency, and other parameters . figure 8. proper measurement equipment setup figure 9. measurement input or output ripple power supply dc1366a poe+ pse auxiliary supply electronic load scope probe v v v a a + a - - + + - + + - + - + - + j1 ethernet cable - - dc2046aaf demo manual dc2046a-a
5 p arts l ist item qty reference part description manufacturer/ part number dc2046a general bom 1 1 cg1 cap, cer, x7r 1000pf 2kv 10% 1808 murata gr442qr73d102kw01l 2 1 cg2 cap, cer, x7r 0.01f 100v 20% 1206 avx 12061c103at 2a 3 0 c1 cap, cer, opt 2kv 1812 opt 4 0 c5 cap, cer, x7u opt 6.3v 10% 1210 opt 5 1 c6 cap, elec, 10f 100v 10% 6.3x7.7 suncon 100ce10bs 6 1 c7 cap, cer, x7r 2.2f 100v 10% 1210 murata grm32er72a225ka35 7 1 c10 cap, cer, x7r 10nf 100v 20% 0603 murata grm188r72a103ka01d 8 1 c11 cap, cer, x7r 0.047f 100v 20% 0603 kemet c0603c473m1ractu 9 1 c12 cap, cer, x7r 0.047f 100v 10% 0805 murata grm21br72a473ka01l 10 1 c13 cap, cer, x7r 10f 10v 10% 1206 murata grm31cr71a106ka01l 11 0 c15, c18, c19, c21 cap, cer, x5r opt 2kv 20% 1812 opt 12 1 c17 cap, cer, x7r 1f 25v 10% 0603 murata grm188r71e105ka12 13 1 c20 cap, cer, x7r 2.2nf 25v 10% 0603 murata grm188r71e222ka01 14 1 c23 cap, cer, x7r 4.7nf 2kv 10% 1812 murata gr443dr73d472kw01l 15 1 c26 cap, cer, x5r 100pf 16v 10% 0402 avx 0402yc101 kat 2a 16 0 c27 cap, cer, x7r opt 6.3v 10% 0402 opt 17 1 d1 diode , schottky, b2100 100v smb diodes inc b2100-13-f 18 1 d2 diode, tvs , ptvs 58vs1ur 58v sod123 nxp ptvs 58vs1ur 19 1 d3 diode, zener, mmsz5252bs 24v sod323 diodes inc mmsz5252bs 20 1 d4 diode, led green rohm sml-010ftt 86l 21 1 d13 diode, schottky, nxp, bat 46w 100v sod323 nxp bat 46wj,115 22 1 d15 diode, diode inc, bav 19ws 120v sod323 diodes inc bav 19ws 23 1 d16 diode, tvs , ptvs 58vs1ur 58v sod123 nxp ptvs 58vs1ur 24 1 d17 diode, schottky, bat 54ws 30v sod323 diodes inc bat 54ws 25 1 d19 diode, tvs , ptvs 58vs1ur 58v sod123 nxp ptvs 58vs1ur 26 7 e1, e2, e3, e4, e9, e10, e12 tp, turret, pad 150-094 0.094" mill-max 2501-2-00-80-00-00-07-0 27 1 j1 conn, integrated jack, 7499511001 wrth 7499511001 28 1 j2 conn, rj45 jack, ss-6488-nf-k1 stewart connector ss-6488-nf-k1 alternate ss-6488s-a-nf 29 1 l 2 ind, 10h coilcraft do1608c-103 30 1 l4 ind, 100h coilcraft do1608c-104 31 9 q1, q11, q12, q13, q14, q15, q16, q17, q18 mosfet, n-ch, psmn075-100mse 100v lfpak33 nxp psmn075-100mse 32 1 q5 transistor, pnp, mmbt3906 40v sot23 fairchild mmbt3906 33 1 q6 transistor, npn, mmbt3904 40v sot23 fairchild mmbt3904 34 1 q7 transistor, pnp, fmmt723 100v sot23 diodes inc fmmt723ta 34 0 q 7 (alternate) transistor, pnp, pbss9110t 100v sot23 nxp pbss9110t 35 4 rt 1, rt 2, rt 3, rt 4 res, chip, 75 5% 0603 nic nrc06j750trf dc2046aaf demo manual dc2046a-a
6 item qty reference part description manufacturer/ part number 36 1 r5 res, chip, 8.2 5% 0805 nic nrc10j8r2trf 37 1 r6 res, chip, 3.3k 5% 0603 nic nrc06j332trf 38 1 r7 res, chip, 20 5% 0805 vishay crcw080520r0jnea 39 1 r12 res, chip, 0 5% 0603 nic nrc06zotrf 40 1 r13 res, chip, 100 5% 0603 vishay crcw0603100rfkea 41 1 r15 res, chip, 15 5% 0603 nic nrc06j150trf 42 1 r17 res, chip, 2k 1% 0603 nic nrc06f2001trf 43 1 r18 res, chip, 10k 5% 0603 yageo rc0603jr-0710kl 44 1 r21 res, chip, 174k 1% 0603 vishay crcw0603174kfkea 45 1 r22 res, chip, 107k 1% 0603 nic nrc06f1073trf 46 1 r27 res, chip, 0 5% 0402 nic nrc04zotrf 47 1 r28 res, chip, 0 5% 0603 nic nrc06zotrf 48 1 r29 res, chip, 52.3k 1% 0603 vishay crcw060352k3fkea 49 0 r32 res, chip, opt 5% 1812 opt 50 1 t3 xfmr, smd gate drive, pe-68386nl pulse pe-68386nl 50 0 t3 (alternate) xfmr, smd gate drive, epa 4271ge pca epa 4271ge 51 0 t4 xfmr, smd gate drive, opt opt 52 1 u3 ic, poe ideal bridge controller, lt4321iuf qfn16 linear technology lt4321iuf dc2046a-a bom 1 1 c2 cap, cer, x7r 22f 6.3v 10% 1206 murata grm31cr70j226ke19 2 1 c3 cap, cer, x7r 22f 6.3v 10% 1206 murata grm31cr70j226ke20 3 1 c4 cap, elec, 68f 4v 20% 5.0x5.3 panasonic 4svpa68maa 4 1 c8 cap, cer, u2j 1nf 630v 5% 1206 murata grm31a7u2j222jw31 5 1 c9 cap, cer, u2j 100pf 630v 5% 1206 murata grm31a7u2j101jw31 6 1 c16 cap, cer, x7r 1f 25v 10% 0805 murata grm21br71e105ka99l 7 1 c22 cap, cer, x7r 4.7nf 25v 10% 0603 murata grm18871e472ka01d 8 1 c24 cap, cer, x7r 0.1f 25v 20% 0603 murata grm188r71e104ka01d 9 1 c25 cap, cer, x7r 470pf 25v 5% 0603 avx 06033a471 jat 2a 10 1 d18 diode, diode inc, b0540ws-7 40v sod323 diode inc b0540ws-7 11 1 e11 tp, turret, pad 150-094 0.094" mill-max 2501-2-00-80-00-00-07-0 12 1 l1 ind, 180nh coilcraft do1813p-181hc 13 1 l3 ind, cmc, 3.3mh wrth 744 272 332 13 0 l3 (alternate) ind, cmc, 3.3mh pca epa 4411 14 1 q2 mosfet, n-ch, psmn2r4-30mld 30v lfpak33 nxp psmn2r4-30mld 15 0 q3 mosfet, n-ch, opt sot23 opt 16 1 q4 mosfet, n-ch, 200v tdson-8 infineon bsz900n20ns3 17 1 r2 res, chip, 360 5% 0805 nic nrc10j381trf 18 1 r3 res, chip, 200 5% 1206 vishay crcw1206200rfkea 19 1 r4 res, chip, 200 5% 1206 vishay crcw1206200rfkea 20 1 r8 res, chip, 5.1 5% 1206 nic nrc12j5r1trf p arts l ist dc2046aaf demo manual dc2046a-a
7 item qty reference part description manufacturer/ part number 21 0 r9 res, chip, opt 5% 1206 opt 22 1 r10 res, chip, 6.49k 1% 0603 vishay crcw06036k49fkea 23 1 r11 res, chip, 6.81k 1% 0603 vishay crcw06036k81fkea 24 1 r14 res, chip, 40m 1% 1206 vishay wsl1206r0400fea 25 0 r16 res, chip, opt , shunt, 0805 opt 26 0 r19 res, chip, opt 1% 0805 opt 27 1 r20 res, chip, 35.7 1% 0805 vishay crcw080535r7fkea 28 0 r23 res, chip, opt 5% 0603 opt 29 1 r24 res, chip, 8.25k 1% 0603 vishay crcw06038k25fkea 30 1 r25 res, chip, 47k 5% 0603 nic nrc06j473trf 31 1 r26 res, chip, 10k 5% 0603 yageo rc0603jr-0710kl 32 1 r30 res, chip, 47 5% 0805 vishay crcw080547r0jnea 33 0 r31 res, chip, opt , shunt, 2512 opt 34 1 t1 xfmr, flyback tran, 750310743 wrth 750310743 34 0 t1 (alternate) xfmr, flyback tran, epc3408g pca epc3408g 35 0 t2 xfmr, flyback tran, opt opt 36 1 u1 ic, pd & switcher controller, LT4276biufd qfn28 linear technology LT4276biufd 37 1 u2 opto, moc207 so8 fairchild moc207m 38 1 fab , printrd circuit board demo circuit 2046a p arts l ist dc2046aaf demo manual dc2046a-a
8 5 5 4 4 3 3 2 2 1 1 d d c c b b a a vportp t2p -vout +vout vportn ___ gnd aux+ aux- 3.3v/6.8a 3.3v/6.8a 5v/4.7a 12v/1.9a 24v/0.95a 5v/7a 5v/2.3a LT4276biufd LT4276biufd LT4276biufd LT4276biufd LT4276aiufd LT4276ciufd assembly version output u1 dc2046a-a dc2046a-b dc2046a-c dc2046a-d dc2046a-e dc2046a-f optional components 37v-57v 37v-57v vsec_p vpri_sg vaux_p sg vpri_sw pg vpri_p vaux_p vsec_sw vsec_sw vsec_p vpri_sw vsec_p vpri_p pg vpri_sg vsec_sg vsec_sg vaux_p vsec_p +vout +vout vportp +vout vcc vcc vportp vportn revision history description date approved eco rev kaung h. production 1 4 1-7-2015 revision history description date approved eco rev kaung h. production 1 4 1-7-2015 revision history description date approved eco rev kaung h. production 1 4 1-7-2015 size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 wednesday, april 01, 2015 12 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 wednesday, april 01, 2015 12 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 wednesday, april 01, 2015 12 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a d19 ptvs58vs1ur d19 ptvs58vs1ur 2 1 hss hss r31 opt 2512 r31 opt 2512 e12 e12 1uf c16 0805 25v 1uf c16 0805 25v r13 100 r13 100 1nf c8 1206 1nf c8 1206 r16 opt 0805 r16 opt 0805 r8 5.1 1206 r8 5.1 1206 t4 opt t4 opt 1 4 2 3 t1 750310743 t1 750310743 5 6 9 1 3 10 7 2 8 2.2uf 100v 1210 x7r c7 2.2uf 100v 1210 x7r c7 c5 opt c5 opt e9 e9 r19 opt 0805 r19 opt 0805 r2 360 r2 360 r32 opt r32 opt opt c27 0402 opt c27 0402 1uf c17 1uf c17 d1 b2100 d1 b2100 2 1 0.047uf c12 100v 0.047uf c12 100v e4 e4 exposed pad, solder side u1 LT4276biufd exposed pad, solder side u1 LT4276biufd vport 28 hsgate 26 hssrc 25 swvcc 23 dnc 22 vcc 21 vin 24 pg 20 fb31 14 isen- 16 isen+ 17 sg 18 aux 2 rclass++ 3 rclass 4 gnd 19 vcc 6 vcc 7 vcc 8 t2p 5 sfst 11 rldcmp 15 vcc 9 gnd 1 ithb 13 ffsdly 12 nc 27 rosc 10 gnd_ep 29 r11 6.81k r11 6.81k pe-68386nl t3 pe-68386nl t3 1 3 6 4 e3 e3 d16 ptvs58vs1ur d16 ptvs58vs1ur 2 1 100pf c26 25v 0402 100pf c26 25v 0402 100uh l4 do1608c-104 100uh l4 do1608c-104 u2 moc207 u2 moc207 1 7 2 6 5 d13 bat46wj,115 d13 bat46wj,115 1 2 r29 52.3k r29 52.3k 470pf c25 470pf c25 10uh l2 coilcraft do1608c-103 10uh l2 coilcraft do1608c-103 l3 3.3mh 744272332 l3 3.3mh 744272332 1 2 3 4 opt c1 opt c1 r12 0 r12 0 + 10uf 100v 6.3x7.7 c6 + 10uf 100v 6.3x7.7 c6 r14 40m 1206 r14 40m 1206 e2 e2 e10 e10 r5 8.2 0805 r5 8.2 0805 c10 10nf 0603 100v c10 10nf 0603 100v r17 2.00k r17 2.00k r22 107k r22 107k mmbt3906 q5 mmbt3906 q5 1 2 3 opt c15 opt c15 e1 e1 r7 20 0805 r7 20 0805 180nh l1 coilcraft do1813p-181hc 180nh l1 coilcraft do1813p-181hc r3 200 1206 r3 200 1206 q2 psmn2r4-30mld q2 psmn2r4-30mld 6 4 5 8 7 1 2 3 4.7nf c23 2kv 4.7nf c23 2kv r15 15 r15 15 opt c21 opt c21 q3 opt q3 opt 3 1 2 q1 psmn075-100mse q1 psmn075-100mse 6 4 5 8 7 1 2 3 0.1uf c24 0.1uf c24 r25 47k r25 47k r4 200 1206 r4 200 1206 d18 b0540ws-7 d18 b0540ws-7 2 1 r30 47 0805 r30 47 0805 r24 8.25k r24 8.25k e11 e11 q7 fmmt723 q7 fmmt723 3 2 1 r20 35.7 0805 r20 35.7 0805 r18 10k r18 10k + c4 68uf 4v 4svpa68maa + c4 68uf 4v 4svpa68maa d15 bav19ws d15 bav19ws 2 1 opt c19 opt c19 c3 22uf 6.3v 1206 x7r c3 22uf 6.3v 1206 x7r r27 0 0402 r27 0 0402 t2 * t2 * 4 6 7 1 3 8 5 2 r9 opt 1206 r9 opt 1206 4.7nf c22 4.7nf c22 r26 10k r26 10k 2.2nf c20 2.2nf c20 c2 x7r 6.3v 1206 22uf c2 x7r 6.3v 1206 22uf d4 led d4 led r21 174k r21 174k q4 bsz900n20ns3 q4 bsz900n20ns3 6 4 5 8 7 1 2 3 100pf c9 1206 100pf c9 1206 mmbt3904 q6 mmbt3904 q6 1 2 3 opt c18 opt c18 10uf c13 10v 1206 10uf c13 10v 1206 d17 bat54ws d17 bat54ws 2 1 r6 3.3k r6 3.3k r10 6.49k r10 6.49k r23 opt r23 opt s chematic diagram dc2046aaf demo manual dc2046a-a
9 information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. 5 5 4 4 3 3 2 2 1 1 d d c c b b a a out to phy in from poe+ pse poe ideal diode bridge data2-1 data2-2 data1-1 data1-2 bg12 bg36 data1-2 tg36 tg45 data2-1 data1-1 data2-2 tg12 bg45 tg45 bg36 tg36 bg12 tg78 bg78 vportn bg78 data2-2 tg78 data2-1 data1-1 data1-2 tg12 bg45 vportn vportp vportn vportp revision history description date approved eco rev kaung h. production 1 4 1-7-2015 revision history description date approved eco rev kaung h. production 1 4 1-7-2015 revision history description date approved eco rev kaung h. production 1 4 1-7-2015 size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 tuesday, march 31, 2015 22 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 tuesday, march 31, 2015 22 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a size date: ic no. rev. sheet of title: approvals pcb des. app eng. technology fax: (408)434-0507 milpitas, ca 95035 phone: (408)432-1900 1630 mccarthy blvd. ltc confidential-for customer use only customer notice linear technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customer's responsibility to verify proper and reliable operation in the actual application. component substitution and printed circuit board layout may significantly affect circuit performance or reliability. contact linear technology applications engineering for assistance. this circuit is proprietary to linear technology and schematic supplied for use with linear technology parts. scale = none www.linear.com 4 tuesday, march 31, 2015 22 high efficiency poe pd interface with integrated switching regulator k. htoo k. htoo n/a LT4276biufd, lt4321iuf demo circuit 2046a-a data1-2 data1-2 d3 mmsz5252bs 24v d3 mmsz5252bs 24v 2 1 cg1 1000pf 1808 2kv cg1 1000pf 1808 2kv q17 psmn075-100mse q17 psmn075-100mse 6 4 5 8 7 1 2 3 d2 ptvs58vs1ur d2 ptvs58vs1ur 2 1 q11 psmn075-100mse q11 psmn075-100mse 6 4 5 8 7 1 2 3 data2-1 data2-1 rt4 75 rt4 75 data2-2 data2-2 r28 0 r28 0 q18 psmn075-100mse q18 psmn075-100mse 6 4 5 8 7 1 2 3 cg2 0.01uf 100v 1206 cg2 0.01uf 100v 1206 q12 psmn075-100mse q12 psmn075-100mse 6 4 5 8 7 1 2 3 q13 psmn075-100mse q13 psmn075-100mse 6 4 5 8 7 1 2 3 1 2 3 6 4 5 7 8 4 x 12nf 4 x 75 ohms 1nf 2kv j1 7499511001 1 2 3 6 4 5 7 8 4 x 12nf 4 x 75 ohms 1nf 2kv j1 7499511001 trd1+ 11 trct1 12 trd1- 10 trd2+ 4 trct2 6 trd2- 5 trd3+ 3 trct3 1 trd3- 2 trd4+ 8 trct4 7 trd4- 9 vc2 14 vc1 13 vc3 15 vc4 16 shield 17 shield 18 j2 ss-6488s-a-nf j2 ss-6488s-a-nf 1 2 3 4 5 6 7 8 9 10 q14 psmn075-100mse q14 psmn075-100mse 6 4 5 8 7 1 2 3 c11 0.047uf 100v c11 0.047uf 100v q15 psmn075-100mse q15 psmn075-100mse 6 4 5 8 7 1 2 3 rt1 75 rt1 75 q16 psmn075-100mse q16 psmn075-100mse 6 4 5 8 7 1 2 3 rt3 75 rt3 75 ep u3 lt4321iuf ep u3 lt4321iuf tg36 1 in36 2 in45 3 tg45 4 tg78 5 in78 6 bg78 7 bg45 8 outp 12 en 11 en 10 outn 9 tg12 16 in12 15 bg12 14 bg36 13 17 outn data1-1 data1-1 rt2 75 rt2 75 s chematic diagram dc2046aaf demo manual dc2046a-a
10 linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax : (408) 434-0507 www.linear.com ? linear technology corporation 2015 lt 0515? printed in usa demonstration board important notice linear technology corporation ( lt c ) provides the enclosed product(s) under the following as is conditions: this demonstration board ( demo board) kit being sold or provided by linear technology is intended for use for engineering development or evaluation purposes only and is not provided by lt c for commercial use. as such, the demo board herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. as a prototype, this product does not fall within the scope of the european union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. if this evaluation kit does not meet the specifications recited in the demo board manual the kit may be returned within 30 days from the date of delivery for a full refund. the foregoing warranty is the exclusive warranty made by the seller to buyer and is in lieu of all other warranties, expressed, implied, or statutory, including any warranty of merchantability or fitness for any particular purpose. except to the extent of this indemnity, neither p arty shall be liable to the other for any indirect, special, incidental, or consequential damages. the user assumes all responsibility and liability for proper and safe handling of the goods. further, the user releases lt c from all claims arising from the handling or use of the goods. due to the open construction of the product, it is the users responsibility to take any and all appropriate precautions with regard to electrostatic discharge. also be aware that the products herein may not be regulatory compliant or agency certified (fcc, ul, ce, etc.). no license is granted under any patent right or other intellectual property whatsoever. lt c assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. lt c currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. please read the demo board manual prior to handling the product . persons handling this product must have electronics training and observe good laboratory practice standards. common sense is encouraged. this notice contains important safety information about temperatures and voltages. for further safety concerns, please contact a lt c applica- tion engineer. mailing address: linear technology 1630 mccarthy blvd. milpitas, ca 95035 copyright ? 2004, linear technology corporation dc2046aaf demo manual dc2046a-a
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