基于LTM4618设计的带跟踪的6A DC电源稳压技术

LTM4618是带跟踪和频率同步的6A DC/DC μModule电源稳压解器，包括了开关控制器，功率FET，电感和所有支持的元件。输入电压4.5V - 26.5V，输出电压0.8V - 5V由单个外接电阻设定。可锁相的固定频率从250kHz到780kHz，可应用在通信和网络设备，服务器，存储卡，ATXA卡，工业设备，点负载稳压和医疗系统。

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