LT4321
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LT4321

PoE Ideal Diode Bridge Controller

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Part Models 4
1ku List Price Starting From $1.74
Features
  • Reduces Heat, Eliminates Thermal Design Problems
  • Maximizes Power Efficiency
  • Less than 800μA Quiescent Operating Current
  • Fully Compatible with IEEE 802.3 Detection and Classification
  • IEEE 802.3 Compliant When Paired with a Powered Device (PD) Controller
  • Works with 2-Pair and 4-Pair PoE Applications
  • Compatible with PoE, PoE+, and LTPoE++™
  • 100V Absolute Maximum Voltage
  • H-Grade Version Operates Up to 125°C
  • 16-Lead 4mm × 4mm QFN Package
Additional Details
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The LT4321 is a dual ideal diode bridge controller that enables a Power over Ethernet (PoE) powered device (PD) to receive power in either voltage polarity from RJ-45 data pairs, spare pairs, or both. The LT4321 and eight N-channel MOSFETs replace the eight diodes in a passive PoE rectifier bridge. The LT4321 eases thermal design and increases delivered power.

An internal charge pump allows an all-NMOS bridge eliminating larger and more costly PMOS switches. The LT4321 works with 2-pair and 4-pair applications. High impedance input sense pins prevent reverse current on unused pairs. If the power source fails or is shorted, a fast turn-off minimizes reverse current transients. Unlike discrete ideal bridge solutions, the LT4321 will operate through transients without enabling the MOSFETs on unpowered pairs.

Applications

  • PoE/PoE+/ LTPoE++ Powered Devices
  • DC Polarity Correction and Ideal Diode-ORing of Telecom Supplies
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file View Data Sheet (Rev.A)
Documentation View All Documentation
Part Models 4
1ku List Price Starting From $1.74
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LT4321

Documentation

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Data Sheet

2

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UPDATED 10/17/2013
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LT4321: PoE Ideal Diode Bridge Controller Data Sheet (Rev.A)

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UPDATED 10/23/2013
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LT4321: PoE理想ダイオード・ブリッジ・コントローラ

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User Guide

15

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UPDATED 12/13/2016
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DC2047A-A - Demo Manual redirect icon

989.00K

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UPDATED 05/19/2017
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DC2475A - Demo Manual (Rev.C) redirect icon

1.00M

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UPDATED 05/24/2017
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DC2539A-A - Demo Manual redirect icon

1.00M

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UPDATED 08/22/2017
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DC2476A-A - Demo Manual (Rev.C) redirect icon

856.38 K

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UPDATED 07/10/2015
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DC2046A-C - Demo Manual redirect icon

897.00K

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UPDATED 07/10/2015
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DC2046A-F - Demo Manual (Rev.G) redirect icon

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UPDATED 07/10/2015
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DC2046A-E - Demo Manual redirect icon

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UPDATED 07/10/2015
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DC2046A-A - Demo Manual (Rev.A) redirect icon

779.00K

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UPDATED 07/10/2015
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DC2046A-B - Demo Manual redirect icon

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UPDATED 07/10/2015
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DC2046A-D - Demo Manual redirect icon

1.00M

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UPDATED 01/14/2015
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DC2125A - Demo Manual redirect icon

532.00K

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UPDATED 06/09/2017
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DC2583A - Demo Manual (Rev.A) redirect icon

780.00K

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UPDATED 05/31/2017
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DC2584A - Demo Manual redirect icon

933.00K

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UPDATED 09/18/2019
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DC2911A - Demo Manual redirect icon

1.19 M

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UPDATED 10/18/2013
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DC2093A - Demo Manual redirect icon

612.00K

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Reliability Data

1

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UPDATED 03/23/2018
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R572 Reliability Data redirect icon

145.5 K

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Technical Articles

6

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UPDATED 02/01/2020
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Power over Ethernet—Supply of Ethernet Devices Via Data Lines redirect icon

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UPDATED 02/01/2020
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以太网供电—通过数据线为以太网设备供电 redirect icon

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UPDATED 02/01/2020
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Power over Ethernet −データ・ラインを通じてイーサネット・デバイスに電力を供給 redirect icon

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UPDATED 10/30/2018
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LT4321/LT4275 LTPoE++/PoE+/PoE PD Controller TechClips redirect icon

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UPDATED 10/24/2013
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LT4321 / LT4275 LTPoE++ / PoE+ / PoE PD 控制器技术短片 redirect icon

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LT4321/LT4275 LTPoE++/PoE+/PoE PD コントローラTechClip redirect icon

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Documentation

Technical Documents 19
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Data Sheet 1

LT4321: PoE Ideal Diode Bridge Controller Data Sheet (Rev.A)

Reliability Data 1

R572 Reliability Data

User Guide 15

DC2047A-A - Demo Manual
DC2475A - Demo Manual (Rev.C)
DC2539A-A - Demo Manual
DC2476A-A - Demo Manual (Rev.C)
DC2046A-C - Demo Manual
DC2046A-F - Demo Manual (Rev.G)
DC2046A-E - Demo Manual
DC2046A-A - Demo Manual (Rev.A)
DC2046A-B - Demo Manual
DC2046A-D - Demo Manual
DC2125A - Demo Manual
DC2583A - Demo Manual (Rev.A)
DC2584A - Demo Manual
DC2911A - Demo Manual
DC2093A - Demo Manual

Technical Articles 2

Power over Ethernet—Supply of Ethernet Devices Via Data Lines
LT4321/LT4275 LTPoE++/PoE+/PoE PD Controller TechClips

Product Selector Card 1

LT4321 - PoE Ideal Diode Bridge Controller

Product Selection Guide 1

Ideal Diodes and Prioritizers

Solutions Bulletin & Brochure 1

Elevate Surveillance with Cameras that See, Sense and Think

Webcast 1

How to Design an Optimized Motion Control System for Intelligent Edge Based Surveillance Camera

Video

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2017-09-18

LT4321 Video Product Brief

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2017-09-18

LT4321/LT4275 TechClip - Increased Available PD Power

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT4321HUF#PBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT4321HUF#TRPBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT4321IUF#PBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LT4321IUF#TRPBF 16-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

Software & Part Ecosystem

Parts Product Life Cycle Description

Ideal Diode Bridge 1
LT4320
LT4320-1
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Ideal Diode Bridge Controller

PoE Powered Device (PD)2
LT4275
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RECOMMENDED FOR NEW DESIGNS

LTPoE++/PoE+/PoE PD Controller

LT4276
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RECOMMENDED FOR NEW DESIGNS

LTPoE++/PoE+/PoE PD Forward/Flyback Controller

Evaluation Kits 18

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AD-PS3803-RD

PoE+ with Ideal Diode Bridge to Isolated Flyback DC/DC (12V, 2A)

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AD-PS3803-RD

PoE+ with Ideal Diode Bridge to Isolated Flyback DC/DC (12V, 2A)

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AD-PS3803-RD
PoE+ with Ideal Diode Bridge to Isolated Flyback DC/DC (12V, 2A)

Features and Benefits

  • Galvanically isolated 12V flyback DC output with up to 24 W of output power capability
  • No Transformer third winding or Opto-Isolator for output regulation
  • Supports IEEE802.3at (PoE+, Type 2) and IEEE802.3bt (PoE++, Type 3 and 4) interfacing and power supply control via a configurable jumper array
  • Supports a wide input DC auxiliary power of 37V to 57V
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Product Detail

The AD-PS3803-RD reference design is a power converter capable of harnessing any IEEE802.3at (PoE+, Type 2) compliant downstream Power-Over-Ethernet (PoE) supply to provide a galvanically isolated DC power.

At the core of this solution is the LT8306 60V No-Opto Flyback controller, stepping down the 37V to 57V PoE input voltage to a 12V, 24W DC output.

The on-board LT4275 LTPoE++/PoE+/PoE power delivery (PD) controller handles interfacing and power delivery to any PoE supply.

The LT4321 ideal diode bridge controller is used for improved end-to-end power delivery efficiency and eased thermal design by utilizing low RDS(ON) N-Channel FETs, replacing the eight-diode configuration typically found in passive PoE rectifier bridge.

The AD-PS3803-RD also has auxiliary DC power support for a wide input range of 37V to 57V.

APPLICATIONS

  • Industrial Automation
  • Surveillance Camera Systems
  • VoIP Phones
  • Payment Terminal Systems
  • Wireless Access Points

Resources

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WIKI

AD-PS3803-RD User Guide (Wiki) reference design link

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AD-PS3803-RD Design Support Files Download

8.03 M

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DC2911A

LT4293, LT4321 IEEE 802.3bt and LTPoE++ Interoperable Powered Device

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DC2911A

LT4293, LT4321 IEEE 802.3bt and LTPoE++ Interoperable Powered Device

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DC2911A
LT4293, LT4321 IEEE 802.3bt and LTPoE++ Interoperable Powered Device
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Product Detail

Demonstration circuit 2911A is an IEEE 802.3bt compliant and LTPoE++ interoperable Power over Ethernet (PoE) Powered Device (PD). It features the LT4293 PD interface controller and the LT4321 PoE ideal diode bridge controller.

The LT4293 provides LTPoE++, IEEE 802.3af (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) (30mΩ typical) N-channel MOSFET for the Hot Swap function to improve efficiency.

Power good (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 Equipment (PSE). This signal communicates allocated power from either LTPoE++ or IEEE 802.3bt-compliant PSEs to the downstream PD circuitry.

The LT4321 controls eight low RDS(ON) (57mΩ typical) N-channel MOSFETs to further improve end-to-end power delivery efficiency and ease thermal design. This solution replaces the eight diodes typically found in a passive PoE rectifier bridge.

The DC2911A accepts up to 90W 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.

Resources

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DC2911A - Schematic Download

41.23 K

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DC2911A - Design Files Download

1.95 M

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DC2911A - Demo Manual Download

1.19 M

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DC2584A-A

LT4295/LT4321 Demo Board | PoE++ (71W/12V/5.5A) PD with Forward DC/DC and Ideal Diode Bridge

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DC2584A-A

LT4295/LT4321 Demo Board | PoE++ (71W/12V/5.5A) PD with Forward DC/DC and Ideal Diode Bridge

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DC2584A-A
LT4295/LT4321 Demo Board | PoE++ (71W/12V/5.5A) PD with Forward DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2584A is an IEEE 802.3bt (Draft 2.1) compliant Power over Ethernet (PoE) Powered Device (PD). It features the LT4295 PD interface and switching regulator controller and the LT4321 PoE ideal diode bridge controller.

Resources

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DC2584A - Schematic Download

141.00K

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DC2584A - Design Files Download

3.00M

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DC2584A - Demo Manual Download

933.00K

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DC2583A

LT4294/LT4321 Demo Board | PoE++ (71W/37V to 57V) PD and Ideal Diode Bridge

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DC2583A

LT4294/LT4321 Demo Board | PoE++ (71W/37V to 57V) PD and Ideal Diode Bridge

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DC2583A
LT4294/LT4321 Demo Board | PoE++ (71W/37V to 57V) PD and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2583 is an Ethernet Alliance™ certified IEEE 802.3bt compliant Power over Ethernet (PoE) powered device (PD). It features the LT4294 PD interface controller and the LT4321 PoE ideal diode bridge controller.

Resources

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PDF

DC2583A - Schematic Download

92.00K

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PDF

DC2583A - Demo Manual (Rev.A) Download

780.00K

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DC2583A - Design Files Download

1.00M

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DC2539A-A

LT4295/LT4321 Demo Board | PoE++ (51W, 12V/3.9A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2539A-A

LT4295/LT4321 Demo Board | PoE++ (51W, 12V/3.9A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2539A-A
LT4295/LT4321 Demo Board | PoE++ (51W, 12V/3.9A) PD with Flyback DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2539A is an IEEE802.3bt (Draft 2.1) compliant Power over Ethernet (PoE) Powered Device (PD). It features the LT4295 PD interface and switching regulator controller and the LT4321 PoE ideal diode bridge controller.

Resources

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DC2539A-A - Schematic Download

159.00K

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DC2539A-A - Demo Manual Download

1.00M

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DC2539A-A - Design Files Download

1.00M

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DC2476A-A

LT4295/LT4321 Demo Board | PoE++ (71W/24V/2.7A or 62W/24V/2.3A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2476A-A

LT4295/LT4321 Demo Board | PoE++ (71W/24V/2.7A or 62W/24V/2.3A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2476A-A
LT4295/LT4321 Demo Board | PoE++ (71W/24V/2.7A or 62W/24V/2.3A) PD with Flyback DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration Circuit 2476A is an Ethernet Alliance™ Gen 2 PoE certified IEEE 802.3bt compliant power over ethernet (PoE) powered device (PD). It features the LT4295 PD interface and switching regulator controller and the LT4321 PoE ideal diode bridge controller.

The LT4295 provides IEEE 802.3af (PoE, Type 1), IEEE 802.3at (PoE+, Type 2), and IEEE 802.3bt (PoE++, Type 3 and 4) compliant interfacing and power supply control. It utilizes an external, low RDS(on) (30mΩ typical) N-channel FET for the hot swap function to improve efficiency. The LT4295 controls a DC/DC converter that utilizes a highly efficient flyback topology with synchronous rectification.

The LT4321 controls eight low RDS(on) (30mΩ typical) N-channel FETs to further improve end-to-end power delivery efficiency and ease thermal design. This solution replaces the eight diodes typically found in a passive PoE rectifier bridge.

The DC2476A-A accepts up to 71.3W of delivered power from a power sourcing equipment (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. The DC2476A-A supplies a 24V output at up to 2.7A as a Class 8 (71.3W) PD and up to 2.4A as a Class 7 (62W) PD application.

Resources

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DC2476A-A - Schematic Download

119.00K

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DC2476A-A - Design Files Download

2.4 M

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DC2476A-A - Demo Manual (Rev.C) Download

856.38 K

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DC2046A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 3.3V/6.8A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 3.3V/6.8A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-A
LT4276B/LT4321 Demo Board | PoE+ (25W, 3.3V/6.8A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-A is an Ethernet Alliance™ certified PoE powered device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321).

Resources

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ZIP

DC2046A - Design Files Download

2.00M

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PDF

DC2046A-A - Schematic Download

73.00K

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DC2046A-A - Demo Manual (Rev.A) Download

779.00K

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DC2475A-A

LT4295/LT4321 Demo Board | PoE++ (40W, 12V/3A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2475A-A

LT4295/LT4321 Demo Board | PoE++ (40W, 12V/3A) PD with Flyback DC/DC and Ideal Diode Bridge

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DC2475A-A
LT4295/LT4321 Demo Board | PoE++ (40W, 12V/3A) PD with Flyback DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2475A-A is an Ethernet Alliance™ certified IEEE802.3bt compliant Power over Ethernet (PoE) powered device (PD). It features the LT4295 PD interface and switching regulator controller with the LT4321 PoE ideal diode bridge controller.

Resources

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PDF

DC2475A - Demo Manual (Rev.C) Download

1.00M

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DC2475A-A - Schematic Download

69.00K

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DC2475A-A - Design Files Download

1.00M

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DC2093A-A

LT4275A/LT4321 LTPoE++/PoE+/PoE PD Demo Board

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DC2046A-B

LT4276B/LT4321 Demo Board | PoE+ (25W, 5V/4.7A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-B

LT4276B/LT4321 Demo Board | PoE+ (25W, 5V/4.7A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-B
LT4276B/LT4321 Demo Board | PoE+ (25W, 5V/4.7A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-B is a PoE powered device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321)



Resources

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ZIP

DC2046A - Design Files Download

2.00M

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DC2046A-B - Schematic Download

73.00K

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DC2046A-B - Demo Manual Download

1.00M

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DC2046A-F

LT4276C/LT4321 Demo Board | PoE (13W, 5V/2.3A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-F

LT4276C/LT4321 Demo Board | PoE (13W, 5V/2.3A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-F
LT4276C/LT4321 Demo Board | PoE (13W, 5V/2.3A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-F is an Ethernet Alliance™ certified PoE Powered Device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321).

Resources

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DC2046A - Design Files Download

2.00M

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DC2046A-F - Demo Manual (Rev.G) Download

1.00M

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DC2046A-F - Schematic Download

72.00K

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DC2046A-C

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-C

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-C
LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-C is a PoE powered device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321).



Resources

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ZIP

DC2046A - Design Files Download

2.00M

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DC2046A-C - Schematic Download

73.00K

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DC2046A-C - Demo Manual Download

897.00K

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DC2093A-B

LT4275B/LT4321 PoE+/PoE PD Demo Board

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DC2093A-C

LT4275C/LT4321 PoE PD Demo Board

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DC2125A

LT4275/LT4321/LTM8027 Demo Board | LTPoE++ PD Plus Diode Bridge and DC/DC Controller

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DC2125A

LT4275/LT4321/LTM8027 Demo Board | LTPoE++ PD Plus Diode Bridge and DC/DC Controller

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DC2125A
LT4275/LT4321/LTM8027 Demo Board | LTPoE++ PD Plus Diode Bridge and DC/DC Controller
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Product Detail

Demonstration circuit 2125 is a small, highly-integrated, non-isolated PoE Powered Device (PD) solution. It features a PD Interface Controller (LT4275), which interfaces with a PoE Power Sourcing Equipment (PSE), an ideal diode bridge controller (LT4321), which minimizes bridge losses, and a DC/DC μModule® regulator (LTM8027).

Resources

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DC2125A - Schematic Download

78.00K

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DC2125A - Design File Download

1.00M

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DC2125A - Demo Manual Download

532.00K

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DC2046A-E

LT4276A/LT4321 Demo Board | LTPoE++ (38.7W, 5V/7A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-E

LT4276A/LT4321 Demo Board | LTPoE++ (38.7W, 5V/7A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-E
LT4276A/LT4321 Demo Board | LTPoE++ (38.7W, 5V/7A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-E is a PoE powered device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321).



Resources

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ZIP

DC2046A - Design Files Download

2.00M

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DC2046A-E - Demo Manual Download

0.00M

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DC2046A-E - Schematic Download

73.00K

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DC2046A-D

LT4276B/LT4321 Demo Board | PoE+(25W, 24V/1A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-D

LT4276B/LT4321 Demo Board | PoE+(25W, 24V/1A) PD with DC/DC and Ideal Diode Bridge

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DC2046A-D
LT4276B/LT4321 Demo Board | PoE+(25W, 24V/1A) PD with DC/DC and Ideal Diode Bridge
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Product Detail

Demonstration circuit 2046A-D is a PoE powered device (PD) with an isolated power supply using synchronous flyback topology, featuring the LT4276 and ideal diode bridge controller (LT4321).



Resources

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DC2046A - Design Files Download

2.00M

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PDF

DC2046A-D - Schematic Download

72.00K

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DC2046A-D - Demo Manual Download

1.00M

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DC2047A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC, Ideal Diode Bridge and 9V-57V AUX

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DC2047A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC, Ideal Diode Bridge and 9V-57V AUX

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DC2047A-A
LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC, Ideal Diode Bridge and 9V-57V AUX
Buy Now View Details

Product Detail

Demonstration circuit 2047A-A is an IEEE802.3at compliant Power over Ethernet (PoE) Powered Device (PD) with support for 9-57VDC and 24VAC auxiliary supply input. It features the LT4276 PD interface and switching regulator controller, the LT4321 PoE ideal diode bridge controller, and the LT4320 ideal diode bridge controller.

Resources

pdf icon

PDF

DC2047A-A - Demo Manual Download

989.00K

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PDF

DC2047A-A - Schematic Download

87.00K

pdf icon

ZIP

DC2047A-A - Design Files Download

1.00M

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Evaluation Kits18

evaluation kit item images

AD-PS3803-RD

PoE+ with Ideal Diode Bridge to Isolated Flyback DC/DC (12V, 2A)
evaluation kit item images

DC2911A

LT4293, LT4321 IEEE 802.3bt and LTPoE++ Interoperable Powered Device
evaluation kit item images

DC2584A-A

LT4295/LT4321 Demo Board | PoE++ (71W/12V/5.5A) PD with Forward DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2583A

LT4294/LT4321 Demo Board | PoE++ (71W/37V to 57V) PD and Ideal Diode Bridge
evaluation kit item images

DC2539A-A

LT4295/LT4321 Demo Board | PoE++ (51W, 12V/3.9A) PD with Flyback DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2476A-A

LT4295/LT4321 Demo Board | PoE++ (71W/24V/2.7A or 62W/24V/2.3A) PD with Flyback DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2046A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 3.3V/6.8A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2475A-A

LT4295/LT4321 Demo Board | PoE++ (40W, 12V/3A) PD with Flyback DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2093A-A

LT4275A/LT4321 LTPoE++/PoE+/PoE PD Demo Board
evaluation kit item images

DC2046A-B

LT4276B/LT4321 Demo Board | PoE+ (25W, 5V/4.7A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2046A-F

LT4276C/LT4321 Demo Board | PoE (13W, 5V/2.3A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2046A-C

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2093A-B

LT4275B/LT4321 PoE+/PoE PD Demo Board
evaluation kit item images

DC2093A-C

LT4275C/LT4321 PoE PD Demo Board
evaluation kit item images

DC2125A

LT4275/LT4321/LTM8027 Demo Board | LTPoE++ PD Plus Diode Bridge and DC/DC Controller
evaluation kit item images

DC2046A-E

LT4276A/LT4321 Demo Board | LTPoE++ (38.7W, 5V/7A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2046A-D

LT4276B/LT4321 Demo Board | PoE+(25W, 24V/1A) PD with DC/DC and Ideal Diode Bridge
evaluation kit item images

DC2047A-A

LT4276B/LT4321 Demo Board | PoE+ (25W, 12V/1.9A) PD with DC/DC, Ideal Diode Bridge and 9V-57V AUX

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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