參數(shù)資料
型號: SLF12565T-470M2R4
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溝道場效應(yīng)管同步降壓穩(wěn)壓控制器輸出電壓低
文件頁數(shù): 14/22頁
文件大?。?/td> 602K
代理商: SLF12565T-470M2R4
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
L
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
SLF12565T-470M2R4-H 功能描述:固定電感器 47uH 2.4A RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm
SLF12565T470M2R4PF 制造商:TDK 功能描述:
SLF12565T-470M2R4-PF 功能描述:固定電感器 SMD 47uH 2.4amps RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm
SLF12565T-470M2R4-Z 制造商:TDK 功能描述:
SLF12565T-471MR70-H 功能描述:470μH Shielded Wirewound Inductor 750mA 924 mOhm Max Nonstandard 制造商:tdk corporation 系列:SLF-H 包裝:剪切帶(CT) 零件狀態(tài):有效 類型:繞線 材料 - 磁芯:鐵氧體 電感:470μH 容差:±20% 額定電流:750mA 電流 - 飽和值:700mA 屏蔽:屏蔽 DC 電阻(DCR):924 毫歐最大 不同頻率時(shí)的 Q 值:- 頻率 - 自諧振:- 等級:AEC-Q200 工作溫度:-40°C ~ 125°C 頻率 - 測試:1kHz 安裝類型:表面貼裝 封裝/外殼:非標(biāo)準(zhǔn) 大小/尺寸:0.492" 長 x 0.492" 寬(12.50mm x 12.50mm) 高度 - 安裝(最大值):0.270"(6.85mm) 標(biāo)準(zhǔn)包裝:1