[原创] Linear LTM4677 36A降压μModuleR模块电源解决方案

Linear公司的LTM4677双18A或单36A降压μModuleR(电源模块)DC/DC稳压器,通过PMBus可进行遥控配置和远程监测电源管理参数.器件包括快速模拟控制回路,精密混合信号电路,EEPROM,功率MOSFET,电感和支持元件,主要用在通信,数据通信和存储系统电源以及多种系统优化.本文介绍了LTM4677主要特性,框图,应用框图和多种应用电路,以及36A演示板DC2066A主要特性,电路图,材料清单和PCB设计文件.

The LTMR4677 is a dual 18A or single 36A step-downμModuleR (power module) DC/DC regulator featuringremote configurability and telemetry-monitoring of powermanagement parameters over PMBus— an open standardI2C-based digital interface protocol. The LTM4677 iscomprised of fast analog control loops, precision mixedsignalcircuitry, EEPROM, power MOSFETs, inductors andsupporting components.

The LTM4677’s 2-wire serial interface allows outputs to bemargined, tuned and ramped up and down at programmableslew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptimeand peak values are readable. Custom configuration ofthe EEPROM contents is not required. At start-up, outputvoltages, switching frequency, and channel phase angleassignments can be set by pin-strapping resistors. TheLTpowerPlay™ GUI and DC1613 USB-to-PMBus converter anddemo kits are available.
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