ltm4620主要特性:

complete standalone dual output power supply

51電子網(wǎng)公益庫(kù)存:

IR2110

IR2117

IRF7105 SOP8

INIC1608L

IP101A-LF

IP101A-LF

IP113M

IP1725

IP175CH-LF

IP175D-LF

dual 13a or single 26a output

wide input voltage range: 4.5v to 16v

output voltage range: 0.6v to 2.5v

±1.5% maximum total dc output error

multiphase current sharing with multiple ltm4620s up to 100a

differential remote sense amplifier

current mode control/fast transient response

adjustable switching frequency

overcurrent foldback protection

frequency synchronization

internal temperature sensing diode output

output overvoltage protection

low profile (15mm × 15mm × 4.41mm) lga package

tm4620應(yīng)用:

telecom and networking equipment

storage and atca cards

industrial equipment

圖.ltm4620簡(jiǎn)化框圖

圖.輸出跟蹤的ltm4620應(yīng)用電路

圖.ltm4620 5v-16v輸入,1.5v和1.2v 13a輸出電路圖

圖.ltm4620帶溫度監(jiān)視的2相1.5v 26a應(yīng)用電路

圖.ltm4620 1.2v和1v 輸出跟蹤電路

圖.ltm4620 4相1.2v 50a電路圖

演示板1780a-c

demonstration circuit 1780a-c features poly phase design using the ltmr4620ev, the high efficiency, high density, dual 13a, switch mode step-down power module regulator.

the input voltage is from 4.5v to 16v. the output voltage is jumper selectable from 1.0v to 2.5v. dc1780a-c can deliver nominal 100a output current with 4× ltm4620s in parallel. as explained in the data sheet, output current derating is necessary for certain vin, vout, and thermal conditions. the ltm4620 on dc1780a-c always operates in continuous conduction mode. the switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. the board allows the user to program how its output voltage ramps up and down through the track_control pin. the output voltage is tightly regulated between vout + and vout  through remote output voltage sensing which improves output voltage regulation at heavy loads. these features and the availability of the ltm4620ev in a compact 15mm × 15mm × 4.41mm lga package make it ideal for use in many high density point-of-load regulation applications.

the ltm4620 data sheet must be read in conjunction with this demo manual prior to working on or modifying the demo circuit dc1780a-c.

圖.100a多相演示板1780a-c外形圖

圖.100a多相演示板1780a-c電路圖(1)

圖.100a多相演示板1780a-c電路圖(2)

圖.100a多相演示板1780a-c電路圖(3)

圖.100a多相演示板1780a-c電路圖(4)

100a多相演示板1780a-c材料清單(bom):



圖.100a多相演示板1780a-c pcb元件布局圖(頂層)

圖.100a多相演示板1780a-c pcb元件布局圖(底層)
linear公司的ltm4620是完整的雙路13a輸出開(kāi)關(guān)模式dc/dc轉(zhuǎn)換器,集成了開(kāi)關(guān)控制器,功率fet,電感和所有支持元件.輸入電壓4.5v-16v,輸出電壓0.6v-2.5v,多個(gè)應(yīng)用時(shí)輸出電流高達(dá)100a,可調(diào)開(kāi)關(guān)頻率,頻率同步,過(guò)流保護(hù),內(nèi)部溫度檢測(cè)二極管輸出,輸出過(guò)壓保護(hù),主要用在通信和網(wǎng)絡(luò)設(shè)備,存儲(chǔ)器和atca卡,工業(yè)設(shè)備.本文介紹了ltm4620主要特性,簡(jiǎn)化框圖和多種應(yīng)用電路,00a多相演示板1780a-c主要特性,電路圖,材料清單和pcb元件布局圖.

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