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

  • 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
High Efficiency Dual 1.8V/1.2V Step-Down Converter Load Step (Forced Continuous Mode) Product Package 1 Product Package 2
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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

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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
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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

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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)

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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

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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-A - Schematic
DC1617A-B
LTC3855EFE Demo Board | Dual Output VIN = 13V to 36V, VOUT1 = 12V @ 6A, VOUT2 = 5V @ 10A
DC1617A-A - Schematic
DC1441A
LTC3855EUJ演示板 | 双路输出， VIN = 4.5V 至 14V， VOUT1 = 1.8V (17A)， VOUT2 = 1.2V (17A)
DC1441A - Schematic
DC1586A
LTC3855EUJ Demo Board | Dual Output, VIN = 4.5V to 25V, VOUT1 = 3.3V @ 5A, VOUT2 = 2.5V @ 5A
DC1586A - Schematic

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
DK-DEV-5AGXB3NES Dev Kit
LTC Parts List
DK-DEV-5AGXB3NES Block Diagram
DK-DEV-5AGXB3NES Power Tree
Altera Arria V SoC Development Kit and SoC Embedded Design Suite
Arria V SoC Development Kit
DK-DEV-5ASTD5NES Block Diagram
DK-DEV-5ASTD5NES Power Tree
Altera Cyclone V GT FPGA Development 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 GX Development Kit (Discontinued)
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 SoC Development Kit and SoC Embedded Design Suite
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 DSP Development Kit, Stratix V Edition
DK-DEV-5SGSMD5N DSP Dev Kit
LTC Parts List
DK-DEV-5SGSMD5N Block Diagram
DK-DEV-5SGSMD5N Power Tree
Altera Stratix V GX FPGA Development 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 Transceiver Signal Integrity Development Kit, Stratix V GT Edition
DK-SI-5SGTMC7N Signal Integrity Kit
LTC Parts List
DK-SI-5SGTMC7N Block Diagram
DK-SI-5SGTMC7N Power Tree
Altera Transceiver Signal Integrity Kit, Stratix V GX Edition
DK-SI-5SGXEA7N Kit
LTC Parts List
DK-SI-5SGXEA7N Block Diagram
DK-SI-5SGXEA7N Block Diagram
DK-SI-5SGXEA7N Power Tree
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
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
Altera Arria V GT FPGA Development Kit
DK-DEV-5AGTD7N Dev Kit
LTC Parts List
DK-DEV-5AGTD7N Block Diagram
DK-DEV-5AGTD7N Block Diagram
DK-DEV-5AGTD7N Power Tree

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