基于LTM4618设计的带跟踪的6A DC电源稳压技术

本文介绍了LTM4618主要特性，简化方框图以及多种应用电路。

LTM4618主要特性:

Complete Standalone Power Supply

Wide Input Voltage Range: 4.5V to 26.5V

6A DC Typical, 8A Peak Output Current

0.8V to 5V Output

Output Voltage Tracking

±1.75% Maximum Total DC Error

Current Mode Control/Fast Transient Response

Phase-Lockable Fixed Frequency 250kHz to 780kHz

On-Board Frequency SynchronizaTIon

Selectable Burst ModeR OperaTIon

Power Good Voltage Indicator

Output Overvoltage ProtecTIon

Output Current Foldback LimiTIng

9mmx15mmx4.32mm LGA Package

LTM4618应用:

Telecom and Networking Equipment

Servers

Storage Cards

ATCA Cards

Industrial Equipment

Point of Load Regulation

Medical Systems

图1。LTM4618简化方框图

图2。LTM4618输入6-26.5V，输出3.3V/6A电路图：满足CISPR25导电和CISPR22 辐射EMI解决方案

图3。LTM4618输入6-26.5V，输出2.5V/6A， 500kHz设计电路图

图4。两个LTM4618并联，输出2.5V/12A设计电路图

图5。LTM4618带跟踪的四相四输出（5V, 3.3V, 2.5V 和1.8V)设计电路图

图6。LTM4618输入5V输出2.5V/6A 500kHz设计电路图