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[原创] TI TPS55288带I2C接口36V 16A升-降压转换器方案

关键词:电源管理 DC/DC转换器 TPS55288

时间:2020-06-19 12:36:23       来源:中电网

TI公司的TPS55288是带I2C接口同步降压/升压的压转换器,集成了两个16A MOSFET,以平衡解决方案尺寸和USB PD应用效率.TPS55288输入电压高达36V,工作在降压模式时输出电流15A.工作在升压模式是,器件8V输入时提供100W或5V输入时提供60W.开关频率通过外接电阻可编程在200kHz到2.4MHz.通过I2C接口,输出电压可在0.8V到21.26V编程,每步20mV.TPS55288具有输出过压保护,逐个周期的开关峰值电流限制和输出短路保护.基准电压精度±1% ,固定4ms软起动时间.热关断保护,4.0mmx3.5mm Hotrod™ QFN封装.主要用在USB PD,汽车充电器,坞站和工业PC. 中电网为您整理如下详细资料,本文介绍了TPS55288主要特性,功能框图和典型应用电路,以及评估模块TPS55288EVM-045快速连接图,电路图,材料清单和PCB设计图.

The TPS55288 is a synchronous buck-boostconverter optimized for converting battery voltage oradaptor voltage into power supply rails. TheTPS55288 integrates two 16-A MOSFETs of theboost leg to balance the solution size and efficiencyfor USB Power Delivery (USB PD) application.

The TPS55288 has up to 36 V input voltagecapability. It can output 15 A when working in buckmode. When working in boost mode,the devicedelivers 100 W from 8 V input or 60 W from 5 V input.When the input is a single cell Li-ion battery, thedevice outputs 45 W with input voltage down to 3.1 V.

The switching frequency is programmable from 200kHz to 2.4 MHz through an external resistor.

Through the I2C interface, the output voltage of theTPS55288 can be programmed from 0.8 V to..

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