基于LTM4618設(shè)計(jì)的帶跟蹤的6A DC電源穩(wěn)壓技術(shù)

LTM4618是帶跟蹤和頻率同步的6A DC/DC μModule電源穩(wěn)壓解器，包括了開關(guān)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(gè)外接電阻設(shè)定?？涉i相的固定頻率從250kHz到780kHz，可應(yīng)用在通信和網(wǎng)絡(luò)設(shè)備，服務(wù)器，存儲(chǔ)卡，ATXA卡，工業(yè)設(shè)備，點(diǎn)負(fù)載穩(wěn)壓和醫(yī)療系統(tǒng)。

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應(yīng)用:

Telecom and Networking Equipment

Servers

Storage Cards

ATCA Cards

Industrial Equipment

Point of Load Regulation

Medical Systems

圖1。LTM4618簡(jiǎn)化方框圖

圖2。LTM4618輸入6-26.5V，輸出3.3V/6A電路圖：滿足CISPR25導(dǎo)電和CISPR22 輻射EMI解決方案[!--empirenews.page--]

圖3。LTM4618輸入6-26.5V，輸出2.5V/6A， 500kHz設(shè)計(jì)電路圖

圖4。兩個(gè)LTM4618并聯(lián)，輸出2.5V/12A設(shè)計(jì)電路圖

圖5。LTM4618帶跟蹤的四相四輸出（5V, 3.3V, 2.5V 和1.8V)設(shè)計(jì)電路圖

圖6。LTM4618輸入5V輸出2.5V/6A 500kHz設(shè)計(jì)電路圖