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LTC3882

具数字电源系统管理功能的双路输出多相降压型 DC/DC 电压模式控制器

英文数据手册

量产

顶部

替代器件

LTC3880

具数字电源系统管理功能的双输出多相降压型 DC/DC 控制器
LTC3882-1

具数字电源系统管理功能的双路输出多相降压型 DC/DC 电压模式控制器

概览

优势和特点
产品详情

优势和特点

符合 PMBus/I²C 标准的串行接口
- 可监视电压、电流、温度和故障
- 数字式可编程电压、电流限值、软起动 / 停止、排序、裕度调节、AVP 和 UV/OV 门限
3V ≤ VINSNS ≤ 38V，0.5V ≤ V_OUT ≤ 5.25V
±0.5% 的输出电压准确度
可编程 PWM 频率或外部时钟同步范围：250kHz 至 1.25MHz
准确的多相 (PolyPhase^®) 均流
具故障记录功能的内部 EEPROM
IC 电源范围：3V 至 13.2V
电阻器或电感器 DCR 电流检测
可任选由电阻器来设置关键参数
40 引脚 (6mm x 6mm) QFN 封装

产品详情

LTC^®3882 是一款双通道、多相 DC/DC 同步降压型开关稳压控制器，其具有符合 PMBus 标准的串行接口。该控制器运用了一种恒定频率、前沿调制、电压模式架构，可实现卓越的瞬态响应和输出调节性能。每个 PWM 通道能够采用多种可兼容 3.3V 的功率级来产生 0.5V 至 5.25V 的输出电压，包括电源模块 (power block)、DrMOS 或分立式 FET 驱动器。最多可让 4 个 LTC3882 并联运作以执行 2、3、4、6 或 8 相操作。

LTC3882 系统配置和监视得到了 LTpowerPlay^® 软件工具的支持。该器件的串行接口可用于回读输入电压、输出电压和电流、温度及故障状态。众多的工作参数可通过数字接口来设定，或者存储于内部 EEPROM 中以供器件上电时使用。开关频率和相位、输出电压和器件地址还可采用外部配置电阻器来设置。

应用

大电流分布式电源系统
服务器、网络和存储设备
智能型高能效功率调节
工业 / 电信 / ATE 系统

产品分类

电源管理

电源监视器，控制器和保护
- 具有数字电源系统管理功能的降压稳压器

类似器件点击在参数搜索中查看所有

产品生命周期量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计，但也可能有更新的替代产品。

评估套件 (5)

DC2291A

LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ V_IN ≤ 14V; 0.5V ≤ V_OUT ≤ 2V @ 140A

DC2252A-A

LTC3882EUJ Demo Board | EEPROM Programming Board for LTC3882

DC2174A-B

LTC3882EUJ Demo Board | Dual Phase Single Output PMBus Buck, 7V ≤ V_IN ≤ 14V; 0.5V ≤ V_OUT0 ≤ 2V @ 70A

DC2174A-A

LTC3882EUJ Demo Board | 7V ≤ V_IN ≤ 14V; 0.5V ≤ V_OUT0 ≤ 2V @ 35A, 0.5V ≤ V_OUT1 ≤ 2V @ 35A

DC1936A

LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ V_IN ≤ 14V; 0.8V ≤ V_OUT0 ≤ 1.8V @ 30A, 0.8V ≤ V_OUT1 ≤ 1.8V @ 30A

DC2291A

查看此评估套件详细信息

Demonstration circuit 2291A is a high current, high efficiency, PolyPhase^® synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. This demo board incorporates two LTC3882 controllers which provide four phases to deliver up to 140A. The default output voltage is 1V and can be adjusted from 0.5V to 2V. The LTC3882 has the PMBus interface and digital power system management functions.

DC2252A-A

查看此评估套件详细信息

Demonstration circuit 2252A-A is a lab tool to program and verify the EEPROM inside the LTC3882 IC. The DC2252A-A is shipped with a LTC3882 placed in the clamshell style programming socket. The EEPROM contains the factory default configuration. The demo system also requires a Windows PC, the DC1613A USB-to-I²C/SMBus/PMBus Controller and the LTpowerPlay software. The LTpowerPlay^™ .proj file that corresponds to the factory default can be found in the GUI.

DC2174A-B

查看此评估套件详细信息

Demonstration circuit 2174A-B is a high current, high efficiency, dual-phase single-output synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. The DC2174A-B operates with a 7V to 14V input voltage and is configured for 1V output at 70A. The output voltage adjustment range is 0.5V to 2V. The LTC3882 has the PMBus interface and power system management functions.

DC2174A-A

查看此评估套件详细信息

Demonstration circuit 2174A-A is a high current, high efficiency, dual-phase dual-output synchronous buck converter featuring the LTC3882EUJ, a dual output voltage mode controller. The DC2174A-A operates with a 7V to 14V input voltage and is configured for 1.5V at 35A and 1V at 35A. The output voltage adjustment range is 0.5V to 2V. The LTC3882 has the PMBus interface and power system management functions.

DC1936A

查看此评估套件详细信息

Demonstration circuit 1936A is a high current, high efficiency, polyphase synchronous buck converter featuring the LTC3882EUJ, a dual output polyphase voltage mode controller. The LTC3882 has the PMBus interface and power system management functions.

The DC1936A uses 6mm × 6mm DrMOS as the power stage. 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 DC1936A provides two outputs, with each output capable of 1V/30A. The DC1936A has optional discrete driver (LTC4449EDCB) and MOSFET footprints for high input voltage applications up to 38V. The DC1936A also has an on-board dynamic load circuit, which makes it easy for the customer to evaluate the transient performances.

替代器件

LTC3880

LTC3882-1

概览

优势和特点

产品详情

产品分类

类似器件 点击在参数搜索中查看所有

产品生命周期 量产

评估套件 (5)

DC2291A

DC2252A-A

DC2174A-B

DC2174A-A

DC1936A

DC2291A

相关资源

DC2252A-A

相关资源

DC2174A-B

相关资源

DC2174A-A

相关资源

DC1936A

相关资源

文档

数据手册 (1)

Reliability Data (1)

应用笔记 (9)

解决方案通报和手册 (1)

Spec Notice (1)

评估板套件使用手册 (4)

工具及仿真模型

LTspice

Models for the following parts are available in LTspice:

LTpowerCAD

LTpowerCAD Project Files

Design tools for the following parts are available in LTpowerCAD:

Linduino

Code Files

配套产品推荐

LTC3882 配套产品

推荐 Related Parts

参考资料

解决方案通报和手册 (1)

技术文章 (3)

Product Selector Card (1)

LT Journal (1)

设计资源

讨论

样片申请及购买

类似器件点击在参数搜索中查看所有

产品生命周期量产