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LTC3882

具有数字电源系统管理功能的双输出 PolyPhase 降压型 DC/DC 电压模式控制器

英文数据手册

Rev. C

推荐新设计使用

顶部

替代器件

概览

优势和特点
产品详情

优势和特点

PMBus/I²C兼容串行接口
- 监控电压、电流、温度和故障
- 数字可编程电压、限流、软启停、时序控制、裕量调节、AVP和UV/OV阈值
3V ≤ VINSNS ≤ 38V，0.5V ≤ V_OUT ≤ 5.25V
输出电压精度：±0.5%
可编程PWM频率或外部时钟同步频率范围为250kHz至1.25MHz

精确PolyPhase^®均流
具有故障记录和ECC功能的内部EEPROM
IC电源范围：3V至13.2V
电阻或电感DCR电流检测
对关键参数进行可选电阻编程
40引脚(6mm × 6mm) QFN封装
通过 AEC-Q100 汽车应用认证

产品详情

LTC3882是一款双通道、多相DC/DC同步降压型开关稳压控制器，具有符合PMBus标准的串行接口。它使用恒频、前沿调制、电压模式架构，可实现出色的瞬态响应和输出调节性能。每个PWM通道可使用各种3.3V兼容功率级（包括电源模块、DrMOS或分立FET驱动器）产生0.5V至5.25V的输出电压。最多四个LTC3882可以并行工作，以实现2相、3相、4相、6相或8相操作。

LTpowerPlay^®软件工具支持LTC3882系统配置和监测。该器件的串行接口可用于回读输入电压、输出电压和电流、温度和故障状态。各种工作参数可以通过数字接口设置或存储在内部EEPROM供上电时使用。也可使用外部配置电阻对开关频率和相位、输出电压和器件地址进行编程设置。


	PWM 使能输出	TG/BG 控制	硬件写保护	专用PGOOD	差分V_out检测
LTC3882	是	是	是	否	仅 V_OUT0
LTC3882-1	否	否	否	是	V_OUT0 和 V_OUT1

应用

高电流分布式电源系统
服务器、网络和存储设备
智能高能效电源调节
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

产品生命周期推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

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-A

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

DC2174A-B

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

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-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.

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.

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 推荐新设计使用

评估套件 (5)

DC2291A

DC2252A-A

DC2174A-A

DC2174A-B

DC1936A

DC2291A

相关资源

DC2252A-A

相关资源

DC2174A-A

相关资源

DC2174A-B

相关资源

DC1936A

相关资源

文档

数据手册 (1)

Reliability Data (1)

应用笔记 (9)

Spec Notice (1)

评估板套件使用手册 (4)

工具及仿真模型

LTspice

LTspice中提供以下器件型号：

LTpowerCAD

LTpowerCAD项目文件

LTpowerCAD中提供以下器件的设计工具：

Linduino

Code Files

参考电路 (1)

NXP (Freescale) QorIQ LS1088A-RDB

NXP (Freescale) QorIQ LS1088A-RDB

NXP (Freescale) QorIQ LS1088A-RDB

优势和特点

所用产品

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 (4)

Product Selector Card (1)

设计资源

支持与讨论

样片申请及购买

类似器件点击在参数搜索中查看所有

产品生命周期推荐新设计使用