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參數(shù)資料
| 型號： | IR3651SPBF |
| 廠商： | International Rectifier |
| 英文描述： | HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER |
| 中文描述： | 高壓同步PWM降壓控制器 |
| 文件頁數(shù)： | 18/19頁 |
| 文件大?。?/td> | 397K |
| 代理商： | IR3651SPBF |
IR3651SP
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F
10/11/2006
Layout Consideration
The layout is very important when designing high
frequency switching converters. Layout will affect
noise pickup and can cause a good design to
perform with less than expected results.
Start to place the power components, make all
the connection in the top layer with wide, copper
filled areas.
The inductor, output capacitor and the MOSFET
should be close to each other as possible. This
helps to reduce the EMI radiated by the power
traces due to the high switching currents through
them. Place input capacitor directly to the drain of
the high-side MOSFET, to reduce the ESR
replace the single input capacitor with two
parallel units
.
The feedback part of the system should be kept
away from the inductor and other noise sources.
The critical bypass components such as
capacitors for Vcc, DRVc and Vb should be close
to respective pins. It is important to place the
feedback
components
resistors and compensation components close to
Fb and Comp pins.
In multilayer PCB use one layer as power ground
plane and have a control circuit ground (analog
ground), to which all signals are referenced. The
goal is to localize the high current path to a
separate loop that does not interfere with the
more sensitive analog control function. These two
grounds must be connected together on the PC
board layout at a single point.
including
feedback
18
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3651STRPBF | 功能描述:電壓模式 PWM 控制器 High Volt Sych PWM 100V 400Mhz 1.25 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| IR3651STRPBF-CUT TAPE | 制造商:IR 功能描述:IR3651SPbF Series 13.2 V 7 mA High Voltage Synchronous PWM Buck Controller |
| IR367319 | 制造商:Thomas & Betts 功能描述:CONNECTOR |
| IR3702 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| IR3702N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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