LTC3880
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LTC3880

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

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Info : 推荐新设计使用 tooltip
Info : 推荐新设计使用 tooltip
产品详情
产品模型 16
特性
  • PMBus/I2C兼容串行接口
  • 遥测回读包括VINIINVOUTIOUT、温度和故障
  • 可编程电压、限流、数字软启停、时序控制、裕量调节、OV/UV和频率同步(250kHz1MHz
  • 整个温度范围内±0.5%的输出电压精度
  • 集成16ADC
  • 具有ECC和故障记录功能的内部EEPROM
  • 集成功能强大的N通道MOSFET栅极驱动器

    电源转换

    • 宽 VIN 范围:4.5V 至 24V
    • VOUT 范围:0.5V 至 5.4V(在 VOUT0为 4V)
    • 模拟电流模式控制回路
    • 精确 PolyPhase® 均流,适用于多达 6 相
    • 采用 40 引脚 (6mm × 6mm) QFN 封装
    • 符合汽车应用的 AEC-Q100 标准
更多细节
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LTC3880/LTC3880-1 是双输出 Polyphase DC/DC 同步降压型开关稳压器控制器,具有基于 I2C 并与 PMBus 兼容的串行接口。控制器使用恒定频率的电流模式架构,由具有图形用户界面 (GUI) 的 LTpowerPlay 软件开发工具提供支持。

开关频率、输出电压和器件地址可以通过外部配置电阻进行编程。参数可以通过数字接口进行设置,或存储在 EEPROM 中。可以通过总线接口回读电压、电流、内部/外部温度以及故障状态。LTC3880 具有一个 5V 线性稳压器,而 LTC3880-1 采用一个外部 5V 电源以达到最小功率损失。请参见下文与 LTC3887 的比较。​

VOUT 启动时间 最大 VOUT0/1 适用于 1 参数的快速 ADC 模式
LTC3887/LTC3887-1 35ms 5.5V/5.5V
LTC3880/LTC3880-1 120ms 4V/5.4V

应用

  • 高电流分布式电源系统
  • 电信、数据通信和存储系统
  • 智能节能功率调整
产品模型 16

产品技术资料帮助

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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。

参考资料

参考资料

视频

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软件和型号相关生态系统

软件和型号相关生态系统

评估

评估套件 14

reference details image

DC1753B-B

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

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DC1753B-B

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (DCR Sense) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

产品详情

Demonstration circuit 1753B-B is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current with the inductor DCR and has a default switching frequency of 425kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 

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DC1753B-A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

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DC1753B-A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (RSENSE) I Dual Phase Single Output PMBus Buck, 6.5V ≤ VIN≤ 24V, VOUT = 0.5V to 3.3V @ 40A

产品详情

Demonstration circuit 1753B-A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power system management. It operates with an input voltage range of 6.5V to 24V. The demo board senses inductor current across a sense resistor and has a default switching frequency of 350kHz. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V. 


 


reference details image

DC1962C

电源系统管理演示板 (PowerStick) | 集成LTC2977、LTC2974和LTC3880的14电源管理器件[需要DC1613]

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DC1962C

电源系统管理演示板 (PowerStick) | 集成LTC2977、LTC2974和LTC3880的14电源管理器件[需要DC1613]

电源系统管理演示板 (PowerStick) | 集成LTC2977、LTC2974和LTC3880的14电源管理器件[需要DC1613]

产品详情

DC1962C演示板适用于:
具有精确输出电流测量功能的4通道PMBus电源系统管理器LTC2974
带数字电源系统管理功能的双通道输出多相降压DC/DC控制器LTC3880
具有精确输出电压测量功能的8通道PMBus电源系统管理器LTC2977

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DC1590B-B

LTC3880EUJ 演示板 (DCR) | VIN 范围:6.5V 至 24V,VOUT0 = 0.5V 至 4V (20A时),VOUT1 = 0.5V 至 5V (20A时),由 PMBus 控制,与 DC1613A 一起使用

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DC1590B-B

LTC3880EUJ 演示板 (DCR) | VIN 范围:6.5V 至 24V,VOUT0 = 0.5V 至 4V (20A时),VOUT1 = 0.5V 至 5V (20A时),由 PMBus 控制,与 DC1613A 一起使用

LTC3880EUJ 演示板 (DCR) | VIN 范围:6.5V 至 24V,VOUT0 = 0.5V 至 4V (20A时),VOUT1 = 0.5V 至 5V (20A时),由 PMBus 控制,与 DC1613A 一起使用

产品详情

演示电路 1590B 是一款双输出同步降压转换器,采用了具有数字电源系统管理功能的双输出峰值电流模式控制器 LTC3880EUJ。该板有两种可用版本:DC1590B-A 检测流过检测电阻的输出电流且默认开关频率为 350kHz,而 DC1590B-B 利用电感 DCR 检测输出电流且默认开关频率为 425kHz。任何一种版本都可以使用 LTC3880EUJ-1(允许用户从外部电源向IC提供偏置电源)代替 LTC3880EUJ 进行填充。这些板提供两个可编程输出,各为 20A。各个输出的出厂默认设置为 1.8V。

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DC1590B-A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

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DC1590B-A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

LTC3880EUJ Demo Board (RSENSE) | VIN Range: 6.5V to 24V, VOUT0 = 0.5V to 4V @ 20A, VOUT1 = 0.5V to 5V @ 20A, PMBus Controlled, Works with DC1613A

产品详情

Demonstration circuit 1590B is a dual output synchronous buck converter featuring the LTC3880EUJ, a dual output peak current mode controller with digital power system management. There are two versions of the board available: DC1590B-A senses the output current across a sense resistor and has a default switching frequency of 350kHz, and DC1590B-B senses output current with the inductor DCR and has a default switching frequency of 425kHz. Either version can be populated with the LTC3880EUJ-1 (which allows the user to provide bias power to the IC from an external power supply) instead of the LTC3880EUJ. These boards provide two programmable outputs of 20A each. The factory default settings are 1.8V for each output.

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DC1753A-A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

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DC1753A-A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

LTC3880EUJ Demo Board (RSENSE) | Dual Phase Single Output, PMBus Buck, 6.5V ≤ VIN ≤ 24V, VOUT = 0.5V to 3.3V @ 40A

产品详情

Demonstration circuit 1753A is a dual phase single-output, synchronous buck converter featuring the LTC3880EUJ, a dual phase current mode controller with digital power management. The DC1753A-A senses inductor current across a sense resistor. Default switching Freq = 350kHz. The demo board can be populated with the LTC3880EUJ-1, which allows the user to provide bias power to the IC from an external power supply. The output voltage of the board can be programmed from 0.5V to 3.3V, with output current up to 40A. The factory default setting for the output is 1.8V.

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DC1709A

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

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DC2052A

LTC3880EUJ/LTC3883EUH | 3相演示板,VIN范围:6.5V至14V,VOUT 范围:0.5V至1.8V (60A),PMBus控制,与DC1613加密狗配合使用

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DC2052A

LTC3880EUJ/LTC3883EUH | 3相演示板,VIN范围:6.5V至14V,VOUT 范围:0.5V至1.8V (60A),PMBus控制,与DC1613加密狗配合使用

LTC3880EUJ/LTC3883EUH | 3相演示板,VIN范围:6.5V至14V,VOUT 范围:0.5V至1.8V (60A),PMBus控制,与DC1613加密狗配合使用

产品详情

演示电路2052A是一款三相单路输出同步降压转换器,内置双相电流模式控制器LTC3880EUJ和具有输入电流检测功能的单相电流模式控制器LTC3883EUH。两个器件均具有PMBus接口和电源系统管理功能。

该板的输入电压范围为6.5V至14V。输出电压可在0.5V至1.8V范围内进行编程,总输出电流高达60A。输出电压的出厂默认设置为1.0V。

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DC1740A-A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

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DC1740A-A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 80A, PMBus Controlled, Works w/ DC1613

产品详情

Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-A is a two chip 4-phase single-output configuration. The default output setting is VOUT0 = 1.2V/80A.


The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board.

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DC1740A-B

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

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DC1740A-B

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT0: 0.5V to 4.1V @ 20A, VOUT1: 0.5V to 4.1V @ 60A, PMBus Controlled, Works w/ DC1613

产品详情

Demonstration circuit 1740A is a PolyPhase® synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller with PMBus interface and digital power system management functions. The DC1740A-B is a two chip 3 + 1 phase dual-output configuration. The default output settings are VOUT0 = 1.5V/20A and VOUT1 = 1.2V/60A.


The DC1740A powers up to default settings and produces power based on configuration resistors or with non-volatile memory (NVM) settings without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter aspects of the LTC3880. To fully explore the extensive digital power management features of the parts, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus Dongle DC1613A to connect to the board.

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DC2088A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

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DC2088A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

LTC3880EUJ Demo Board | 7V ≤ VIN ≤ 14V; VOUT Range: 0.8V to 1.8V @ Up to 50A

产品详情

Demonstration circuit 2088A is a high current, high density, two-phase single output synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller. The LTC3880 has the PMBus interface and power system management functions.


 


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DC2089A-A

LTC3880EUJ/LTC3870EUFD RSENSE演示板| 7V ≤ VIN≤ 14V;VOUT = 0.8V至1.8V (80A)

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DC2089A-A

LTC3880EUJ/LTC3870EUFD RSENSE演示板| 7V ≤ VIN≤ 14V;VOUT = 0.8V至1.8V (80A)

LTC3880EUJ/LTC3870EUFD RSENSE演示板| 7V ≤ VIN≤ 14V;VOUT = 0.8V至1.8V (80A)

产品详情

演示电路2089A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LTC3880EUJ和双相从控制器LTC3870EUFD。LTC3880具有PMBus接口和电源系统管理功能。

此演示板的输入范围为7V至14V,且输出电压可在0.8V至1.8V范围内进行编程。4相操作时输出电流可高达80A。DC2089A有两个版本:DC2089A-A使用电流检测电阻,而DC2089A–B具有DCR电流检测功能。输出电压的出厂默认设置为1.0V。

可以使用PC重新配置LTC3880的电源管理功能,例如:标称 VOUT、裕量设定点、OV/UV限值、温度故障限值、时序参数、故障日志、故障响应、GPIO和其他功能。

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DC2089A-B

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

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DC2089A-B

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

LTC3880EUJ/LTC3870EUFD DCR SENSE Demo Board | 7V ≤ VIN ≤ 14V; VOUT = 0.8V to 1.8V @ 80A

产品详情

Demonstration circuit 2089A is a high current, high efficiency, poly-phase synchronous buck converter featuring the LTC3880EUJ, a dual-phase current mode controller, and the LTC3870EUFD, a dual-phase slave controller. The LTC3880 has the PMBus interface and power system management functions.


The input range of this board is from 7V to 14V, and the output voltage can be programmed from 0.8V to 1.8V. The output current is up to 80A for 4-phase operation. The DC2089A has two versions, the DC2089A-A uses a current sense resistor, while the DC2089A–B has DCR current sensing. The factory default setting for the output voltage is 1.0V.


You can use a PC to reconfigure the power management features of the LTC3880 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIO and other functionality.

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DC1962C-KIT

电源系统管理入门套件(包括DC1962C、DC1613A)

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DC1962C-KIT

电源系统管理入门套件(包括DC1962C、DC1613A)

电源系统管理入门套件(包括DC1962C、DC1613A)

产品详情

DC1962C-KIT演示板适用于:
具有精确输出电压测量功能的8通道PMBus电源系统管理器LTC2977
具有精确输出电流测量功能的4通道PMBus电源系统管理器LTC2974
带数字电源系统管理功能的双通道输出多相降压DC/DC控制器LTC3880


 


评估套件14

工具和仿真

工具及仿真模型 4

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。

启动此部分的现成LTspice演示电路:

1步:下载并在计算机上安装LTspice

2步:单击下面的链接,下载演示电路。

3步:如果在单击以下链接之后LTspice未自动打开,可通过右击该链接并选择“目标另存为”来运行该仿真。将文件保存到计算机之后,请启动LTspice并从“文件”菜单中选择“打开”来打开演示电路。

Linduino

Linduino是ADI公司的Arduino兼容系统,用于开发和分配面向集成电路的固件库和示例代码。每个支持Linduino的产品包括示例主程序(在LTSketchbook/产品型号文件夹中定义)和驱动程序代码(在LTSketchbook/库文件夹中定义)。

GitHub上的Linduino代码存储库以及有关如何使用代码的说明

购买Linduino

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参考电路

参考电路 4

DK-DEV-5AGTD7N Dev Kit

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Altera Arria V GT FPGA Development Kit

Altera Arria V GT FPGA Development Kit

参考设计

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特性和优点

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DK-DEV-5SGSMD5N DSP Dev Kit