LT4294

LT4294 LINER

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LT4294, LT4321 IEEE 802.3bt Powered Device Demonstration circuit 2583 is an IEEE 802.3bt (Draft 2.3) compliant Power over Ethernet (PoE) powered device (PD). It features the LT®4294 PD interface controller and the LT4321 PoE ideal diode bridge controller . The LT4294 provides IEEE 802.3a f (PoE, Type 1), IEEE 802.3at (PoE +, Type 2) and IEEE 802.3bt (PoE ++, Type 3 and 4) compliant interfacing. It utilizes an external, low RDS(ON) (57mΩ typical) N-channel FET for the hot swap function to improve efficiency. Additional features include power good (PWRGD) and T2P output indica- tors for interfacing with downstream electronics. The PWRGD output indicates the PD controller is ready to provide power to the downstream load. This signal can be used to enable an isolated power supply. The T2P output indicates the available power from the power sourcing L, L T , L TC, L TM, Linear Technology, L TPoE++ and the Linear logo are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. BoarD photo equipment (PSE) to the downstream load. This signal can be used to limit the load and prevent overloading the PSE. The LT4321 controls eight low R DS(ON) (57mΩ typical) N-channel FETs to further improve end-to-end power delivery efficiency and ease thermal design. This solu - tion replaces the eight diodes typically found in a passive PoE rectifier bridge. The DC2583A accepts up to 71W of delivered power from a PSE via the RJ45 connector (J1) or a local 48V DC power supply using the auxiliary supply input. When both supplies are connected, the auxiliary supply input has priority over the PoE input. Design files for this circuit board are available at http://www.linear.com/demo/DC2583A Top Side Bottom Side

and AUX– inputs of the DC2583A. 1 and select the corresponding shunt positions. Table 1. Single-Signature Classification Codes, Power *Class 0 is not defined for 802.3bt PDs.

1. Connect the output of the IEEE 802.3bt compliant PSE

using a CAT5e or CAT6 Ethernet cable. detected and powered the PD. connected to the DC2583A is provided in Table 2. Table 2 and will indicate connection to a Type 2 PSE. Otherwise PD behavior will be unaffected. Table 2. T2P Response

and connect test equipment as shown in Figure 5. turn off the electronic load. operation is provided in Table 3. Figure 5. Setup Diagram for Auxiliary Supply Input Table 3. T2P Response During Auxiliary Power Operation

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 2 C1, C5 CAP ., 0.047µF, X7S, 100V, 10%, 0603 TDK, C1608X7S2A473K080AB 2 0 C2 CAP ., OPTION, 0402 OPT 3 1 C3 CAP ., 0.047µF, X7R, 100V, 10%, 0805 AVX, 08051C473KAT2A 4 1 CG1 CAP ., 1000pF, X7R, 2000V, 10%, 1808 TDK, C4520X7R3D102K130KA 5 4 CT1, CT2, CT3, CT4 CAP , CER, X7R 0.01µF 200V 10%, 0805 AVX, 08052C103KAZ2A 6 1 D2 DIODE, TVS, 58V, 600W, SOD128 NEXPERIA, PTVS58VP1UTP 7 1 D1 DIODE, SCHOTTKY, 100V, 3A NEXPERIA, PMEG10030 8 1 J1 CONN., MOD. JACK, FEMALE, 2.54mm, 8 TERMINAL, 1 PORT , R/A THRU-HOLE STEWART CONNECTOR, SS-7188S-A-NF 9 2 Q1, Q11 MOSFET , N-CH, 100V, 36.6mΩ, 30A, 91W, LFPAK33 NEXPERIA, PSMN040-100MSE 10 8 Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 MOSFET , N-CH, 100V, 71mΩ, 18A, 65W, LFPAK33 NEXPERIA, PSMN075-100MSE 11 1 R9 RES., 174k, 1%, 0603 NIC, NRC06F1743TRF 12 1 R10 RES., 52.3k, 1%, 0603 NIC, NRC06F5232TRF 13 2 R11, R18 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA 14 1 R12 RES., 8.2Ω, 1/5W, 5%, 0805 NIC, NRC10J8R2TRF 15 1 R13 RES., 3.3k , 1/10W, 5%, 0603 VISHAY, CRCW06033K30JNEA 16 2 R14, R15 RES., 100k, 1/10W, 5%, 0603 VISHAY, CRCW0603100KJNEA 17 0 R16, R17 RES., OPT , 0805 OPT 18 2 RC1, RC6 RES., 1.00k, 1/8W, 1%, 0805 VISHAY, CRCW08051K00FKEA 19 2 RC2, RC8 RES., 140Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805140RFKEA 20 2 RC3, RC10 RES., 76.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080576R8FKEA 21 2 RC4, RC12 RES., 49.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080549R9FKEA 22 1 RC5 RES., 34.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080534R8FKEA 23 1 RC7 RES., 37.4Ω, 1/8W, 1%, 0805 VISHAY, CRCW080537R4FKEA 24 1 RC9 RES., 46.4Ω, 1/8W, 1%, 0805 PANASONIC, ERJ-6ENF46R4V 25 1 RC11 RES., 64.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080564R9FKEA 26 1 RC13 RES., 118Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805118RFKEA 27 4 RT1, RT2, RT3, RT4 RES., 75Ω, 1/10W, 5%, 0603 VISHAY, CRCW060375R0JNEA 28 1 T1 TRANSFORMER, ETHERNET , 749022016 WURTH ELEKTRONIK, 749022016 29 0 T4 (AL TERNATE) TRANSFORMER, ETHERNET , EPG4260S-LF PCA EPG4260S-LF 30 0 T4 (AL TERNATE) TRANSFORMER, ETHERNET , ETH1-460LD COILCRAFT ETH1-460LD 31 1 U1 I.C., IEEE 802.3bt PD CONTROLLERS, DFN10, 3mm x 3mm LINEAR TECH., LT4294IDD#PBF 32 1 U2 I.C., PoE IDEAL DIODE BRIDGE CONTROLLER, QFN16-UF , 4mm x 4mm LINEAR TECH., LT4321IUF#PBF

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Hardware: For Demo Board Only 1 1 C4 CAP ., ALUM. ELECT ., 22µF, 100V, 20% SUN ELECTRONIC, 100CE22BS 2 1 CG2 CAP ., 1000pF, X7R, 2000V, 10%, 1808 TDK, C4520X7R3D102K130KA 3 1 D3 LED, GREEN, 560nm, 3x2mm, 1206 ROHM, SML-010FTT86L 4 1 D4 DIODE, 12V, 200mW, SOD-323 DIODES INC, MMSZ5242BS-7-F 5 7 E1, E2, E3, E4, E5, E6, E7 TURRET , 0.094" MTG. HOLE MILL-MAX 2501-2-00-80-00-00-07-0 6 1 J2 CONN., MOD. JACK, FEMALE, 2.54mm, 8 TERMINAL, 1 PORT , R/A THRU-HOLE STEWART CONNECTOR, SS-7188S-A-NF 7 18 JP1-JP18 CONN., HEADER, 1X2, 2mm SULLINS, NRPN021PAEN-RC 8 1 R19 RES., 30k, 1/10W, 5%, 0603 VISHAY, CRCW060330K0JNEA 9 1 RMPS1 RES., 3.0k, 2W, 1%, 2512 TE CONNECTIVITY 35213K0FT 10 4 RT5, RT6, RT7, RT8 RES., 75Ω, 1/10W, 5%, 0603 VISHAY, CRCW060375R0JNEA 11 2 XJP1, XJP2 SHUNT , 2mm SAMTEC, 2SN-BK-G 12 1 PCB, DC2583A DEMO CIRCUIT 2583A 13 2 STENCILS, DC2583A (TOP & BOTTOM) STENCIL DC22583A

1. ALL RESISTORS AND CAPACITORS ARE 0603 2. ALL RESISTORS TOLERANCE RATING ARE 5% NOTE 1: UNLESS OTHERWISE SPECIFIED JUMPER SELECTIONS PD CLASS RCLASS JUMPERSPOWER 13W 3.84W 6.49W 13W 25.5W 40W 51W 62W 71W JP1 JP3 JP5 JP7 JP9 JP11 JP13 JP15 JP17 JP2 JP4 JP6 JP8 JP10 JP12 JP14 JP16 JP18 RCLASS JUMPERS USE VOUT+ AND VOUT- TERMINALS TO CONNECT TO A PWRGD ENABLED POWER SUPPLY ONLY. USE VOUT+ AND LAB_TEST_VOUT- TERMINALS FOR LAB TESTING WITH ELECTRONIC OR RESISTIVE LOAD ONLY. NOT NEEDED FOR FINAL CIRCUIT. VPORTP VPORTN PWRGD SIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 1 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUFSIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 1 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUFSIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 1 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUF

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV KAUNG H.PRODUCTION 7 1 - 4 2 - 5 01__ DESCRIPTION DATEAPPROVEDECO REV KAUNG H.PRODUCTION 7 1 - 4 2 - 5 01__ DESCRIPTION DATEAPPROVEDECO REV KAUNG H.PRODUCTION 7 1 - 4 2 - 5 01__ PTVS58VP1UTP JP14 RMPS 2512 3.0K R11 TP5 JP18 JP1 RC5 34.8 0805 1% JP3 JP8 RC12 49.9 0805 1% RC11 64.9 0805 1% RC8 140 0805 1% PMEG10030ELPX 2 1 47nF X7R 100V 0805 R16* 0805 RCLS R14 100K RC6 1.00K 0805 1% 0.047uF 100V 0603 JP15 TP1 LAB_TEST_VOUT- PSMN040-100MSE JP2 Q11 PSMN040-100MSE LED 1 2 + C4 22uF 100V R19 30K RC13 118 0805 1% OPT 0402 E2 VOUT- RC3 76.8 0805 1% RC7 37.4 0805 1% AUX+ R15 100KTP3 RC2 140 0805 1% JP5 R13 3.3K JP6 R10 52.3K U1 LT4294IDD GND1 AUX2 RCLASS3 RCLASS++4 GND5 T2P 6 PWRGD 7 HSSRC 8 HSGATE 9 VPORT 10 GND11 TP4 VOUT+ JP13 R17 OPT 0805 RCLS++ JP16 JP17 RC4 49.9 0805 1% 174K JP10 RC10 76.8 0805 1% T2P RC9 0805 1% 46.4 RC1 1.00K 0805 1% JP4 PWRGD JP7 JP11 JP9 TP2 MMSZ5242BS, 12V R12 8.2 0805 AUX- JP12 RCLASS++ RCLASS PWRGD VPORTN RCLASS RCLASS++ PWRGD

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. schematic Diagram A DEMO CIRCUIT 2583A NOTE 2: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE 0603 2. ALL RESISTORS TOLERANCE RATING ARE 5% OUT TO PHY 37V-57V IN FROM PSE VPORTP VPORTN PWRGD SIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 2 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUFSIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 2 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUFSIZE DATE: . V E R. O N C I 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 Wednesday, May 24, 2017 2 2 IEEE 802.3bt POWERED DEVICE KAUNG H. KAUNG H. N/A LT4294IDD, LT4321IUF RT6 PSMN075-100MSE RT2 VPORTP RT8 SS-7188S-A-NF 9 10 RT5 CT4 0.01uF 100V 0805 PSMN075-100MSE 3 C5 0.047uF 100V PSMN075-100MSE CG1 1000pF 2KV 1808 T1 749022016 D- 3 TD 1 X+14 X-16 D+ 11 D- 9 D- 6 D+ 8 X-13 TD 4 D+ 5 D+ 2 TX15 TD 10 TD 7 D- 12 TX18 X+17 X-19 TX21 X+20 X-22 TX24 X+23 CG2 1000pF 2KV 1808 CT2 0.01uF 100V 0805 PSMN075-100MSE RT7 RT1 RT4 75CT3 0.01uF 100V 0805 EP LT4321IUF TG361 IN362 IN453 TG454 TG785 IN786 BG787 BG458 OUTP 12 EN 11 EN 10 OUTN 9 TG1216 IN1215 BG1214 BG3613 17OUTN CT1 0.01uF 100V 0805 PSMN075-100MSE PSMN075-100MSE

3 R18

POE_CT36 POE_CT45 TG45 TG12 BG12 TG36 BG36 TG45 BG45 TG78 BG78 POE_CT36 POE_CT45 POE_CT78POE_CT12 VPORTP VPORTN TG78 POE_CT78 BG78 BG45 TG12 POE_CT12 BG12 BG36 POE_CT12 POE_CT78 POE_CT45 POE_CT36

DEMO MANUAL DC2583A  LINEAR TECHNOLOGY CORPORATION 2017 LT 0517 • PRINTED IN USA DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) 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 LTC 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 PARTY 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 LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s 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. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC 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 LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation