LTC3887

推荐新设计使用

具数字电源系统管理功能的双输出 PolyPhase 降压型 DC/DC 控制器

数据手册 (Rev. F) 产品选型表
产品模型
24
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

  • 订购定制编程部件
  • 符合 PMBus/I2C 标准的串行接口
    • 遥测回读包括 VIN、IIN、VOUT、IOUT、温度、占空比和故障
    • 可编程电压、电流限值、数字软起动 / 停止、排序、裕度调节、 过压 / 欠压 (OV / UV) 和频率同步 (250kHz 至 1MHz)
  • 在整个温度范围内实现 ±0.5% 的输出电压准确度
  • 集成型 16 位 ADC
  • VOUT 范围：0.5V 至 5.5V (VOUT0，VOUT1)
  • 内部 EEPROM 和具 ECC 的故障记录
  • 强大的集成型 N 沟道 MOSFET 栅极驱动器 (LTC3887)
  • 最小接通时间 45ns
  • 宽 VIN 范围：4.5V 至 24V
  • 模拟电流模式控制环路
  • 面向多相 (PolyPhase®) 应用的远端差分采样
  • 可为多达 6 个相位提供准确的 PolyPhase® 均流
  • 采用 40 引脚 (6mm x 6mm) QFN 封装
LTC3887
具数字电源系统管理功能的双输出 PolyPhase 降压型 DC/DC 控制器
Dual 350kHz 3.3V/0.5V Step-Down Converter Regulated Output Voltage vs Temperature, VOUT = 0.5V Product Package 1
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参考资料

数据手册 1

可靠性数据 1

用户手册 5

应用笔记 7

技术文章 1

信息 1

产品信息 1

规范通知 1

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添加至 myAnalog

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软件资源

器件驱动器 1

硬件生态系统

部分模型 产品周期 描述
数字电源系统管理器 1
LTC2975
推荐新设计使用 具准确输入电流和能量测量功能的 4 通道 PMBus 电源系统管理器
外部电源开关降压控制器 1
LTC3870-1
推荐新设计使用 用于数字电源系统管理的多相降压型从属控制器
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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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工具及仿真模型

LTspice 3

LTspice中提供以下器件型号：

  • LTC3887
  • LTC3887-1

Linduino 3

LTpowerCAD 3

IBIS 模型 1

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
DC2578A

整体电源管理：热插拔、中间总线电压、负载点（集成LTC4281、LTC3886、LTC3887、LTC2975）[需要DC1613]

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产品详情

DC2578A是一款完整的电源链，包括一个热插拔控制器、一个中间总线控制器和六个负载点通道，具有电源系统管理功能。该板演示如何通过LTC4281热插拔控制器和LTC3886降压中间总线控制器(IBC)安全从背板传输电源，并通过调节负载电压的负载点转换器(POL)输出。它全面展示了ADI解决方案的电源管理、协作和安全功能，并展示了如何轻松配置和管理整个电源层次结构。每个稳压电源能够进行时序控制、微调、裕量调节、监控、测量和协作响应故障，并将故障信息记录在非易失性存储器中。此外，板载负载脉冲发生器有助于优化可调LTC3886控制回路响应。整个系统提供的各种状态和遥测信息在一个GUI接口——LTpowerPlay下进行合并和呈现。

eval board
schematic 2
DC2263A-A

LTC3887EUJ Demo Board (RSENSE) | Dual PMBus Buck, 7V ≤ VIN ≤ 18V, VOUT0/VOUT1 = 0.8V to 1.8V @ 25A

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产品详情

演示电路 2263A 是一款高电流、高效率、双路输出/三相同步降压转换器，内置双相电流模式控制器 LTC3887EUJ。LTC3887 具有 PMBus 接口和电源系统管理功能。DC2263A 在功率级中采用分立 MOSFET。该板的输入电压范围为 7V 至 14V。输出电压可在 0.8V 至 1.8V（1.0V 默认值）范围内进行编程，每相输出电流高达 25A。DC2263A 有两个版本：DC2263A-A 使用检测电阻并提供两个输出，而 DC2263A-B 使用 DCR 电流检测并提供双相单输出。

eval board
schematic 3
DC2394A

LTC3887EUJ-1 Demo Board (DCR Sense) | PMBus Buck with DrMOS, 7V ≤ VIN ≤ 14V, VOUT0/VOUT1 = 0.8V to 1.8V @ 30A

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产品详情

演示电路 2394A 是一款高电流、高效率、双路输出 PolyPhase® 同步降压转换器，内置双相电流模式控制器 LTC3887EUJ-1。LTC3887-1 具有 PMBus 接口和电源系统管理功能。

eval board
schematic 4
DC1709A

LTC3880/-1 & LTC3887/-1 Demo Board I Programming Clamshell Socketed Demo Board

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产品详情

DC1709A: Demo Board for the LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management.


 


eval board
schematic 5
DC2454A

LTC3887EUJ-1/LTC3870EUF-1 Demo Board | Dual Phase PMBus Buck Controller with Slave Controller, 7V ≤ VIN ≤ 14V, 0.8V ≤ VOUT ≤ 1.8V @ 100A

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产品详情

演示电路 2454A 是一款高电流、高效率、三相同步降压转换器，内置双相电流模式控制器 LTC3887EUJ-1 和双相从控制器 LTC3870EUF-1。LTC3887-1 具有 PMBus 接口和电源系统管理功能。

eval board
schematic 6
DC2263A-B

LTC3887EUJ Demo Board (DCR SENSE) | 2 Phase PMBus Buck, 7V ≤ VIN ≤ 18V, VOUT = 0.8V to 1.8V @ 50A

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产品详情

Demonstration circuit 2263A is a high current, high efficiency, dual output/polyphase synchronous buck converter featuring the LTC3887EUJ, a dual-phase current mode controller. The LTC3887 has the PMBus interface and the power system management functions. The DC2263A uses discrete MOSFETs in the power stage. The input range of this board is from 7V to 14V. The output voltage can be programmed from 0.8V to 1.8V (1.0V default) with an output current up to 25A per phase. The DC2263A has two versions: The DC2263A-A uses a sense resistor and provides two outputs while the DC2263A-B uses DCR current sensing and provides a dual-phase single output.
DC2578A
整体电源管理：热插拔、中间总线电压、负载点（集成LTC4281、LTC3886、LTC3887、LTC2975）[需要DC1613]
DC2578A
DC2263A-A
LTC3887EUJ Demo Board (RSENSE) | Dual PMBus Buck, 7V ≤ VIN ≤ 18V, VOUT0/VOUT1 = 0.8V to 1.8V @ 25A
DC2263A - Schematic
DC2394A
LTC3887EUJ-1 Demo Board (DCR Sense) | PMBus Buck with DrMOS, 7V ≤ VIN ≤ 14V, VOUT0/VOUT1 = 0.8V to 1.8V @ 30A
DC2394A - Schematic
DC1709A
LTC3880/-1 & LTC3887/-1 Demo Board I Programming Clamshell Socketed Demo Board
DC1709A - Schematic
DC2454A
LTC3887EUJ-1/LTC3870EUF-1 Demo Board | Dual Phase PMBus Buck Controller with Slave Controller, 7V ≤ VIN ≤ 14V, 0.8V ≤ VOUT ≤ 1.8V @ 100A
DC2454A - Schematic
DC2263A-B
LTC3887EUJ Demo Board (DCR SENSE) | 2 Phase PMBus Buck, 7V ≤ VIN ≤ 18V, VOUT = 0.8V to 1.8V @ 50A
DC2263A - Schematic

参考电路

Versal PRIME 参考设计

AI XCXM1802 for Full Management Mid to High Voltage

查看参考设计详情

特性和优点

ADI Key Power Management Features for Versal ACAP XCXM1802 for Mid to High Voltage

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3644 is a quad 1.25A output, high efficiency synchronous monolithic capable of switching up to 2.25MHz.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
XCXM1802 Low Voltage
XCXM1802 Low Voltage
XCXM1802 Low Voltage Efficiency
Versal PRIME 参考设计

AI XCXM1802 for Low Voltage

查看参考设计详情

特性和优点

ADI Key Power Management Features for Versal PRIME XCXM1802 for Low Voltage

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3644 is a quad 1.25A output, high efficiency synchronous monolithic capable of switching up to 2.25MHz.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
Versal PRIME 参考设计

AI XCXM1902 Minimum Rails and PL Performance

查看参考设计详情

特性和优点

ADI Key Power Management Features for Versal PRIME XCXM1802 for Minimum Rails / PL Performance

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LT8607 is a compact, high efficiency, high speed 750mA synchronous monolithic.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
Versal PRIME 参考设计

AI XCXM1802 for Optimized Efficiency

查看参考设计详情

特性和优点

ADI Key Power Management Features for Versal ACAP XCXM1802 for Optimized Efficiency

  • Proposed Solution implements new LTC3887-1/LTC7051 combo
  • LTC3887-1 is a PMBus 2-phase, 2 loop, current mode controller. PMBus commands allow Vin, Vout, current, temperature, and fault status read back.
  • LTC7051 is new Silent Switcher 2 ADI MOS capable of delivering increased DC load while switching at higher frequencies. Increased DC load allows for decreased phase count and higher current density. Increased Fsw allows for increase bandwidth and excellent transient response.
  • LTC3636 is dual 6A, controlled on-time current mode monolithic (integrated FETs). Provides high performance compact solution for auxiliary rails.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
  • LTC3634 is a single chip solution for DDR rails providing VDD, VTT, and Vref in a monolithic solution.
Versal PRIME
AI XCXM1802 for Full Management Mid to High Voltage
Versal PRIME
AI XCXM1802 for Low Voltage
XCXM1802 Low Voltage
XCXM1802 Low Voltage Efficiency
Versal PRIME
AI XCXM1902 Minimum Rails and PL Performance
Versal PRIME
AI XCXM1802 for Optimized Efficiency

最新评论

3 年前
RE: LTC3887 1. 卷带包装spec ， 2. ESD ：HBM，CDM 多少V
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