TPS65270PWPR电源管理 (PMIC)原装TI

1 Features

1• Wide Input Supply Voltage Range: 4.5 V to 18 V

• 0.8 V, ±1% Accuracy Reference

• Up to 2-A (Buck 1) and 3-A (Buck 2) Maximum

Continuous Output Loading Current

• Low-Power Pulse Skipping Mode to Achieve High

Light Load Efficiency

• Adjustable Switching Frequency

300 kHz to 1.4 MHz Set by External Resistor

• Startup With a Prebiased Output Voltage

• Dedicated Enable and Soft Start for Each Buck

• Peak Current-Mode Control With Simple

Compensation Circuit

• Cycle-by-Cycle Overcurrent Protection

• 180° Out-of-Phase Operation to Reduce Input

Capacitance and Power Supply Induced Noise

• Available in 24-Lead Thermally Enhanced

HTSSOP (PWP) and VQFN 4-mm × 4-mm (RGE)

Packages

2 Applications

• DTV

• DSL Modems

• Cable Modems

• Set-Top Boxes

• Car DVD Players

• Home Gateway and Access Point Networks

• Wireless Routers

3 Description

The TPS65270 is a monolithic, dual synchronous

buck regulator with a wide operating input voltage

that can operate in 5-V, 9-V, 12-V, or 15-V bus

voltages and battery chemistries. The converters are

designed to simplify its application while giving the

designer the option to optimize their usage according

to the target application.
TPS65270PWPRTPS65270PWPRTPS65270PWPRTPS65270PWPR

1功能

宽输入电源电压范围:4.5 V - 18v

•0.8 V,±1%的准确率参考

•最多2- a (Buck 1)和3-A (Buck 2)

连续输出负载电流

•低功耗脉冲跳频模式，实现高功耗

轻载效率

•可调开关频率

外部电阻器设置300 kHz至1.4 MHz

•使用预偏输出电压启动

•为每个Buck提供专用的启动和软启动

•峰值电流模式控制简单

补偿电路

•循环过流保护

•180°异相位的操作来减少输入

电容和电源诱发噪声

•可提供24铅热增强

HTSSOP(PWP)和VQFN 4毫米×4毫米(RGE)

包

2应用程序

•数字电视

•DSL调制解调器

•电缆调制解调器

•机顶盒

•汽车DVD播放器

•家庭网关和接入点网络

•无线路由器

3描述

TPS65270是一个整体，双同步

具有宽工作输入电压的buck调节器

可以在5-V、9-V、12-V或15-V总线上运行

电压和电池化学反应。转换器是

设计来简化它的应用，同时给予

设计师的选择，以优化他们的使用

到目标应用程序。