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參數(shù)資料
| 型號(hào)： | 4TPB220ML |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N溝道場(chǎng)效應(yīng)管同步降壓穩(wěn)壓控制器輸出電壓低 |
| 文件頁(yè)數(shù)： | 6/22頁(yè) |
| 文件大?。?/td> | 602K |
| 代理商： | 4TPB220ML |
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Example Circuits (Continued)
This circuit design, detailed in the Design Considerations
section, uses inexpensive aluminum capacitors and off-the-
shelf inductors. It can deliver 10A at better than 85% effi-
ciency. Large bulk capacitance on input and output ensure
stable operation.
The example circuit of Figure 4 has been designed for
minimum component count and overall solution size. A
switching frequency of 600kHz allows the use of small input/
output capacitors and a small inductor. The availability of
separate 5V and 12V supplies (such as those available from
desk-top computer supplies) and the low current further
reduce component count. Using the 12V supply to power the
MOSFET drivers eliminates the bootstrap diode, D1. At low
currents, smaller FETs or dual FETs are often the most
efficient solutions. Here, the Si4826DY, an asymmetric dual
FET in an SO-8 package, yields 92% efficiency at a load of
2A.
20049404
FIGURE 3. 5V to 1.2V, 10A, 300kHz
20049405
FIGURE 4. 5V to 1.8V, 3A, 600kHz
LM2727/LM2737
www.national.com
14
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 4TPB220ML | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 220UF 4V |
| 4TPB330ML | 功能描述:鉭質(zhì)電容器-SMD聚合物 4volts 330uF ESR 40mohm RoHS:否 制造商:Kemet 電容:33 uF 電壓額定值:50 V ESR:40 mOhms 容差:20 % 工作溫度范圍: 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4 mm 制造商庫(kù)存號(hào):X Case 系列:T543 產(chǎn)品: 封裝:Reel |
| 4TPB330ML | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 330UF 4V |
| 4TPB470M | 制造商:SANYO 功能描述:CAPACITOR, 470UF, 4V 制造商:SANYO 功能描述:CAPACITOR, 470UF, 4V Bulk 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 470UF 4V 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR, 470UF, 4V |
| 4TPB470M | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 470UF 4V |
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