基于LTM4618設計的帶跟蹤的6A DC電源穩壓技術

LTM4618是帶跟蹤和頻率同步的6A DC/DC μModule電源穩壓解器，包括了開關控制器，功率FET，電感和所有支持的元件。輸入電壓4.5V - 26.5V，輸出電壓0.8V - 5V由單個外接電阻設定。可鎖相的固定頻率從250kHz到780kHz，可應用在通信和網絡設備，服務器，存儲卡，ATXA卡，工業設備，點負載穩壓和醫療系統。

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

9mmx15mmx4.32mm LGA Package

LTM4618應用:

Telecom and Networking Equipment

Servers

Storage Cards

ATCA Cards

Industrial Equipment

Point of Load Regulation

Medical Systems

圖1。LTM4618簡化方框圖

圖2。LTM4618輸入6-26.5V，輸出3.3V/6A電路圖：滿足CISPR25導電和CISPR22 輻射EMI解決方案