LT4276

推荐新设计使用

LTPoE++/PoE+/PoE PD 正激式 / 反激式控制器

产品模型
12
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

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产品详情

  • 具正激式 / 反激式控制器的 IEEE 802.3af/at 和 LTPoE++ 90W 受电设备 (PD)
  • LT4276A 支持所有下列标准:
    • LTPoE++ 38.7W、52.7W、70W 和 90W
    • 符合 IEEE 802.3at (25.5W) 规范
    • 符合 IEEE 802.3af (高达 13W) 规范
  • LT4276B 符合 IEEE 802.3at/af 规范
  • LT4276C 符合 IEEE 802.3af 规范
  • 出众的浪涌保护能力 (100V 绝对最大值)
  • 宽结温范围 (–40°C 至 125°C)
  • 低至 9V 的辅助电源支持
  • 反激式操作无需光隔离器
  • 外部热插拔 N 沟道 MOSFET 用于实现最低的功率耗散和最高的系统效率
  • 利用 LT4321 理想二极管桥可实现>94% 的端到端效率
  • 采用 28 引脚 4mm x 5mm QFN 封装
LT4276
LTPoE++/PoE+/PoE PD 正激式 / 反激式控制器
LTPoE++ 70W Power Supply in a Forward Mode LT4276 Family Product Package 1
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参考资料

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工具及仿真模型

LTspice 1


LTspice中提供以下器件型号:

  • LT4276A
LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。


评估套件

eval board
AD-3DSMARTCAM1-PRZ

Smart Camera for 3D & 2D sensing

特性和优点

  • 3D and 2D sensing
  • AI Edge processing capability
  • WiFi and Gigabit Ethernet connectivity
  • Open Source SDK with Windows and Linux support 

产品详情

The AD-3DSMARTCAM1-PRZ is a 2D & 3D machine vision solution with AI edge processing capabilities. It can be used for implementing advanced machine vision applications for different industry segments including logistics, robotics, agriculture and people activity monitoring.

An open-source SDK that accompanies the hardware platform enables configuring the camera and extracting depth, IR and RGB data from the camera on the host system of your choice. Windows and Linux support are built into the SDK as well as sample code and wrappers for various languages including Python, C/C++ and MATLAB. The SDK also integrates with 3rd party technologies like OpenCV, Open3D and RoS.

APPLICATIONS

  • Logistics
  • Robotics
  • Agriculture
  • Building Management 
  • People Activity Monitoring
Specification Table
Camera
3D ToF sensor FoV 90x60, Range: 4m, Resolution 640x480 @ 30fps
RGB sensor FoV 128x68, Range 6m, Resolution 1920x1080 @ 30fps
Connectivity
WiFi 802.11a/b/g/n/ac, 867Mbps with dual stream in 802.11n, 2x2 Access Points with MIMO standard
Ethernet (optional) 1xRJ45 10M/100M/1G self-adaptive Ethernet port
Bluetooth 5.0 Bluetooth Class 1 or Class2 transmitter operation, Adaptive frequency hopping
Power supply
External power 12V DC @ 2A
Power over Ethernet (optional) PoE+ IEEE802.3-2012, max 20W
Operating Conditions
Temperature Range -25C to 60C
Operating Class IP66
Computing Resources
CPU Quad-core ARM A57 @ 1.43 GHz
GPU 128-core Maxwell
Memory 4 GB 64-bit LPDDR4 25.6 GB/s
Storage 16GB eMMC
Certifications
Safety, EMC, Environment Eye safe and conforms to necessary regional standards

eval board
DC2046A-A

LT4276B/LT4321 演示板 | 集成 DC/DC 和理想二极管电桥的 PoE+(25W、3.3V/6.8A)PD

产品详情

演示电路 2046A-A 是一款集成隔离电源的 PoE 受电设备(PD),采用同步反激式拓扑,内置 LT4276 和理想二极管电桥控制器(LT4321)。

eval board
DC2046A-B

LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、5V/4.7A)PD

产品详情

演示电路2046A-B是一款集成隔离电源的PoE受电设备(PD),采用同步反激式拓扑,内置LT4276和理想二极管电桥控制器(LT4321)


 


eval board
DC2262A-B

LT4276A/LT4321 Demo Board | LTPoE++ (90W, 12V/7A) PD with DC/DC and Ideal Diode Bridge

产品详情

Demonstration circuit 2262 is a PoE Powered Device (PD) with a synchronous forward isolated power supply featuring the LT4276 and an 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 connected to a PSE, the LT4276 turns on an external, low-resistance, high-power N-channel Hot Swap FET. The LT4276 controls a high-power, small-sized power supply that utilizes a highly efficient, synchronously rectified, active clamp forward topology. The LT4321 provides further efficiency improvement by minimizing bridge losses.

eval board
DC2046A-F

LT4276C/LT4321 演示板 | 集成 DC/DC 和理想二极管电桥的 PoE(13W、5V/2.3A)PD

产品详情

演示电路 2046A-F 是一款集成隔离电源的 PoE 受电设备(PD),采用同步反激式拓扑,内置 LT4276 和理想二极管电桥控制器(LT4321)。

eval board
DC2046A-C

LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、12V/1.9A)PD

产品详情

演示电路2046A-C是一款集成隔离电源的PoE受电设备(PD),采用同步反激式拓扑,内置LT4276和理想二极管电桥控制器(LT4321)。


 


eval board
DC2262A-A

LT4276A/LT4321演示板 | 集成DC/DC和理想二极管电桥的LTPoE++(70W、5V/13A)PD

产品详情

演示电路2262是一款集成同步正向隔离电源的PoE受电设备(PD),内置LT4276和理想二极管电桥控制器(LT4321)。


LT4276提供IEEE802.3af(PoE、1类)、IEEE802.3at(PoE+、2类)、LTPoE++ PD接口和电源控制。当PD连接到PSE时,LT4276将导通外部低电阻、高功耗N通道Hot Swap FET。LT4276可控制高功耗、小尺寸电源,该电源利用高效率、同步整流的有源箝位正向拓扑。LT4321可较大程度地降低电桥损耗,进一步提高了效率。

eval board
DC2046A-E

LT4276A/LT4321演示板 | 集成DC/DC和理想二极管电桥的LTPoE++(38.7W、5V/7A)PD

产品详情

演示电路2046A-E是一款集成隔离电源的PoE受电设备(PD),采用同步反激式拓扑,内置LT4276和理想二极管电桥控制器(LT4321)。


 


eval board
DC2046A-D

LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、24V/1A)PD

产品详情

演示电路2046A-D是一款集成隔离电源的PoE受电设备(PD),采用同步反激式拓扑,内置LT4276和理想二极管电桥控制器(LT4321)。


 


eval board
DC2047A-A

LT4276B/LT4321演示板 | 集成DC/DC、理想二极管电桥和9V-57V AUX的PoE+(25W、12V/1.9A)PD

产品详情

演示电路2047A-A是一款兼容IEEE802.3at的以太网供电(PoE)受电设备(PD),支持9-57VDC和24VAC辅助电源输入。它内置LT4276 PD接口和开关稳压器控制器、LT4321 PoE理想二极管电桥控制器和LT4320理想二极管电桥控制器。

AD-3DSMARTCAM1-PRZ
Smart Camera for 3D & 2D sensing
AD-3DSMARTCAM1-PRZ
DC2046A-A
LT4276B/LT4321 演示板 | 集成 DC/DC 和理想二极管电桥的 PoE+(25W、3.3V/6.8A)PD
DC2046A-A Application Circuit DC2046A-A Application Circuit DC2046A-A Application Circuit DC2046A-A Application Circuit DC2046A-A Application Circuit EA Certified 4
DC2046A-B
LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、5V/4.7A)PD
DC2046A-B Demo Board DC2046A-B Demo Board DC2046A-B Demo Board DC2046A-B Demo Board DC2046A-B Demo Board DC2046A-B - Schematic
DC2262A-B
LT4276A/LT4321 Demo Board | LTPoE++ (90W, 12V/7A) PD with DC/DC and Ideal Diode Bridge
DC2262A-B Demo Board DC2262A-B Demo Board DC2262A-B Demo Board DC2262A-B Demo Board
DC2046A-F
LT4276C/LT4321 演示板 | 集成 DC/DC 和理想二极管电桥的 PoE(13W、5V/2.3A)PD
DC2046A-F Demo Board DC2046A-F Demo Board DC2046A-F Demo Board DC2046A-F Demo Board DC2046A-F Application Circuit DC2046A-F Application Circuit DC2046A-F Application Circuit DC2046A-F Application Circuit DC2046A-F Application Circuit EA Certified 3
DC2046A-C
LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、12V/1.9A)PD
DC2046A-C Demo Board DC2046A-C Demo Board DC2046A-C Demo Board DC2046A-C Demo Board DC2046A-C Demo Board DC2046A-C - Schematic
DC2262A-A
LT4276A/LT4321演示板 | 集成DC/DC和理想二极管电桥的LTPoE++(70W、5V/13A)PD
DC2262A-B Demo Board DC2262A-B Demo Board DC2262A-B Demo Board DC2262A-B Demo Board
DC2046A-E
LT4276A/LT4321演示板 | 集成DC/DC和理想二极管电桥的LTPoE++(38.7W、5V/7A)PD
DC2046A-E Demo Board DC2046A-E Demo Board DC2046A-E Demo Board DC2046A-E Demo Board DC2046A-E Demo Board DC2046A-E - Schematic
DC2046A-D
LT4276B/LT4321演示板 | 集成DC/DC和理想二极管电桥的PoE+(25W、24V/1A)PD
DC2046A-D Demo Board DC2046A-D Demo Board DC2046A-D Demo Board DC2046A-D Demo Board DC2046A-D Demo Board DC2046A-D - Schematic
DC2047A-A
LT4276B/LT4321演示板 | 集成DC/DC、理想二极管电桥和9V-57V AUX的PoE+(25W、12V/1.9A)PD
DC2047A-A Evaluation Board DC2047A-A Evaluation Board - Top View DC2047A-A Evaluation Board - Bottom View DC2047A-A - Schematic

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