LTC3855

量产

采用差分远端采样的双通道、多相、同步 DC/DC 控制器

数据手册 产品选型表
产品模型
8
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
  • 参考资料
  • 软件资源
  • 硬件生态系统
  • 工具及仿真模型
  • 评估套件
  • 参考电路
  • 最新评论
    •

    产品详情

    • 双通道、180° 定相控制器降低了所需的输入电容和电源感应噪声
    • 高效率：达 95%
    • RSENSE 或 DCR 电流检测
    • 可编程 DCR 温度补偿
    • ±0.75%、0.6V 输出电压准确度
    • 可锁相固定频率：250kHz 至 770kHz
    • 真正的远端采样差分放大器
    • 双路 N 沟道 MOSFET 同步驱动
    • 宽 VIN 范围：4.5V 至 38V
    • VOUT 范围：0.6V 至 12.5V (未采用差分放大器)
    • VOUT 范围：0.6V 至 3.3V (采用差分放大器)
    • 用于多达 12 相运作的时钟输入和输出
    • 可调软起动或 VOUT 跟踪
    • 折返输出电流限制
    • 输出过压保护
    • 40 引脚 (6mm x 6mm) QFN 封装和 38 引脚 FE 封装

     
    LTC3855
    采用差分远端采样的双通道、多相、同步 DC/DC 控制器
    提问

    参考资料

    数据手册 1

    可靠性数据 1

    用户手册 3

    应用笔记 2

    设计笔记 1

    技术文章 3

    了解更多
    添加至 myAnalog

    将产品添加到myAnalog 的现有项目或新项目中（接收通知）。

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    软件资源

    找不到您所需的软件或驱动?

    申请驱动/软件

    硬件生态系统

    部分模型 产品周期 描述
    多个输出降压调节器 1
    LTC3880
    		推荐新设计使用 具有数字电源系统管理功能的双输出 PolyPhase 降压型 DC/DC控制器
    高压热插拔控制器 1
    LTC4364
    		推荐新设计使用 具理想二极管的浪涌抑制器
    数字电源系统管理器 1
    LTC2974
    		推荐新设计使用 具有精确输出电流的4通道PMBus电源系统管理器
    双电源监控器 1
    LTC2960
    		推荐新设计使用 36V、纳安级电流、两输入电压监视器
    Modal heading
    添加至 myAnalog

    将产品添加到myAnalog 的现有项目或新项目中（接收通知）。

    创建新项目

    工具及仿真模型

    LTspice 2

    LTspice中提供以下器件型号：

    • LTC3855

    LTpowerCAD 6

    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。

    LTpowerCAD

    LTpowerCAD®是一种电源设计程序，它选择功率级元件，提供详细效率信息，显示快速环路波特图稳定性和负载瞬态分析，并可导出至LTspice进行仿真。

    评估套件

    eval board
    schematic 1
    DC1617A-A

    LTC3855EFE Demo Board | Dual Output VIN = 4.5V to 26V, VOUT1 = 2.5V @ 15A, VOUT2 = 1.8V @ 15A

    立即购买 更多内容

    产品详情

    Demonstration circuit DC1617A is a dual output synchronous buck converter featuring the LTC3855EFE in a high density, two sided drop-in layout with power components on the top and the control circuit on the bottom. The package style for the LTC3855EFE is a 38-lead TSSOP. The board comes in two assembly types. The –A assembly provides 2.5V/15A and 1.8V/15A from a 4.5V to 26V input. DCR inductor sensing is used to provide the highest efficiency. The current limit is NTC compensated to provide the minimal amount of variation over temperature. The -A also features remote sensing for VOUT2.

    eval board
    schematic 2
    DC1617A-B

    LTC3855EFE Demo Board | Dual Output VIN = 13V to 36V, VOUT1 = 12V @ 6A, VOUT2 = 5V @ 10A

    立即购买 更多内容

    产品详情

    Demonstration circuit DC1617A is a dual output synchronous buck converter featuring the LTC3855EFE in a high density, two sided drop-in layout with power components on the top and the control circuit on the bottom. The package style for the LTC3855EFE is a 38-lead TSSOP. The board comes in two assembly types. The –B assembly is a high power, 12V/6A and 5V/10A converter with a 13V to 36V input. A sense resistor is used to provide a precise current limit. Unlike the –A assembly, on the –B assembly the remote sense diff amp is bypassed since VOUT2 is > 3.3V.

    eval board
    schematic 3
    DC1441A

    LTC3855EUJ演示板 | 双路输出， VIN = 4.5V 至 14V， VOUT1 = 1.8V (17A)， VOUT2 = 1.2V (17A)

    立即购买 更多内容

    产品详情

    演示电路DC1441A是一款双路输出同步降压转换器，内置LTC3855EUJ。该板在400kHz开关频率下通过4.5V至14V输入电压提供两个输出：1.8V/17A和1.2V/17A。

    eval board
    schematic 4
    DC1586A

    LTC3855EUJ Demo Board | Dual Output, VIN = 4.5V to 25V, VOUT1 = 3.3V @ 5A, VOUT2 = 2.5V @ 5A

    立即购买 更多内容

    产品详情

    Demonstration circuit 1586A is a high efficiency, dual-output (3.3V and 2.5V), synchronous buck converter with 4.5V to 25V input range. It can supply 5A maximum load current at 3.3V and 2.5V outputs. The demo board uses the LTC3855EUJ controller. The LTC3855 is a feature-rich dual-output dual-phase synchronous buck controller with on-chip drivers, remote output voltage sensing (VOUT2) and inductor DCR temperature compensation.
    DC1617A-A
    LTC3855EFE Demo Board | Dual Output VIN = 4.5V to 26V, VOUT1 = 2.5V @ 15A, VOUT2 = 1.8V @ 15A
    DC1617A-B
    LTC3855EFE Demo Board | Dual Output VIN = 13V to 36V, VOUT1 = 12V @ 6A, VOUT2 = 5V @ 10A
    DC1441A
    LTC3855EUJ演示板 | 双路输出， VIN = 4.5V 至 14V， VOUT1 = 1.8V (17A)， VOUT2 = 1.2V (17A)
    DC1586A
    LTC3855EUJ Demo Board | Dual Output, VIN = 4.5V to 25V, VOUT1 = 3.3V @ 5A, VOUT2 = 2.5V @ 5A

    参考电路

    DK-DEV-5AGXB3NES Dev Kit
    DK-DEV-5AGXB3NES Dev Kit
    LTC Parts List
    DK-DEV-5AGXB3NES Block Diagram
    DK-DEV-5AGXB3NES Power Tree
    Altera Arria V GX FPGA Development Kit 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    Arria V SoC Development Kit
    Arria V SoC Development Kit
    DK-DEV-5ASTD5NES Block Diagram
    DK-DEV-5ASTD5NES Power Tree
    Altera Arria V SoC Development Kit and SoC Embedded Design Suite 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-DEV-5CGTD9N Dev Kit
    DK-DEV-5CGTD9N Dev Kit
    DK-DEV-5CGTD9N Block Diagram
    DK-DEV-5CGTD9N Power Tree
    DK-DEV-5CGTD9N Power Tree No TI DDR Regulator
    Altera Cyclone V GT FPGA Development Kit 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-DEV-5CGXC7NES Dev Kit
    DK-DEV-5CGXC7NES Dev Kit
    LTC Parts List
    DK-DEV-5CGXC7NES Block Diagram
    DK-DEV-5CGXC7NES Block Diagram
    DK-DEV-5CGXC7NES Power Tree
    Altera Cyclone V GX Development Kit (Discontinued) 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DC934A Demo Board for DK-DEV-5CSXC6N
    DC934A Demo Board for DK-DEV-5CSXC6N
    DK-DEV-5CSXC6N Dev Kit
    DK-DEV-5CSXC6N Block Diagram
    DK-DEV-5CSXC6N Power Tree
    DK-DEV-5CSXC6N LTC Power Tree
    Altera Cyclone V SoC Development Kit and SoC Embedded Design Suite 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-DEV-5SGSMD5N DSP Dev Kit
    DK-DEV-5SGSMD5N DSP Dev Kit
    LTC Parts List
    DK-DEV-5SGSMD5N Block Diagram
    DK-DEV-5SGSMD5N Power Tree
    Altera DSP Development Kit, Stratix V Edition 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-DEV-5SGXEA7N Dev Kit
    DK-DEV-5SGXEA7N Dev Kit
    LTC Parts List
    DK-DEV-5SGXEA7N Block Diagram
    DK-DEV-5SGXEA7N Power Tree
    DK-DEV-5SGXEA7N Power Tree No TI
    Altera Stratix V GX FPGA Development Kit 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-SI-5SGTMC7N Signal Integrity Kit
    DK-SI-5SGTMC7N Signal Integrity Kit
    LTC Parts List
    DK-SI-5SGTMC7N Block Diagram
    DK-SI-5SGTMC7N Power Tree
    Altera Transceiver Signal Integrity Development Kit, Stratix V GT Edition 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-SI-5SGXEA7N Kit
    DK-SI-5SGXEA7N Kit
    LTC Parts List
    DK-SI-5SGXEA7N Block Diagram
    DK-SI-5SGXEA7N Block Diagram
    DK-SI-5SGXEA7N Power Tree
    Altera Transceiver Signal Integrity Kit, Stratix V GX Edition 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    Stratix V Advanced System Development Board
    Stratix V Advanced System Development Board
    Stratix V Advanced System Development Board Block Diagram
    Stratix V Advanced Systems Development Board Power Tree
    Stratix V Advanced System Development Board 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    Terasic DE2i-150 Cyclone IV Board
    Terasic DE2i-150 Cyclone IV Board
    LTC Parts List
    Terasic DE2i-150 Cyclone IV Block Diagram
    DE2i-150 Power Tree
    Terasic DE2i-150 Cyclone IV Board 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    DK-DEV-5AGTD7N Dev Kit
    DK-DEV-5AGTD7N Dev Kit
    LTC Parts List
    DK-DEV-5AGTD7N Block Diagram
    DK-DEV-5AGTD7N Block Diagram
    DK-DEV-5AGTD7N Power Tree
    Altera Arria V GT FPGA Development Kit 参考设计

    查看参考设计详情

    特性和优点

    • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
    • Our reference designs are supported by an intuitive design tool set and IP
    • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
    Altera Arria V GX FPGA Development Kit
    Altera Arria V SoC Development Kit and SoC Embedded Design Suite
    Altera Cyclone V GT FPGA Development Kit
    Altera Cyclone V GX Development Kit (Discontinued)
    Altera Cyclone V SoC Development Kit and SoC Embedded Design Suite
    Altera DSP Development Kit, Stratix V Edition
    Altera Stratix V GX FPGA Development Kit
    Altera Transceiver Signal Integrity Development Kit, Stratix V GT Edition
    Altera Transceiver Signal Integrity Kit, Stratix V GX Edition
    Stratix V Advanced System Development Board
    Terasic DE2i-150 Cyclone IV Board
    Altera Arria V GT FPGA Development Kit

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