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參數(shù)資料
| 型號(hào)： | SP6656ER |
| 英文描述： | High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output |
| 中文描述： | 高效率400mA同步降壓穩(wěn)壓器的可編程輸出位 |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 185K |
| 代理商： | SP6656ER |
15
Date: 7/9/04
SP6656 High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output Copyright 2004 Sipex Corporation
APPLICATION INFORMATION
SP6656 Component Sample Layout
SP6656 PC Layout Top Side
SP6656 PC Layout Bottom Side
ground of the C
OUT
capacitor to the ground of the
C
IN
capacitor and then to the PGND pin 10. The
control ground plane connects from pin 9 GND to
ground of the C
VIN
capacitor and the R
I
ground
return of the feedback resistor. These two separate
control and power ground planes come together in
the figure titled PCB top sample layout where
SP6656 pin 9 GND is connected to pin 10 PGND.
Power loops on the input and output of the con-
verter should be laid out with the shortest and
widest traces possible. The longer and narrower
the trace, the higher the resistance and inductance
it will have. The length of traces in series with the
capacitors increases its ESR and ESL and reduces
their effectiveness at high frequencies. Therefore,
put the 1
μ
F bypass capacitor as close to the V
IN
and
GND pins of the converter as possible, the 10
μ
F
C
IN
close to the P
VIN
pin and the 10
μ
F output
capacitor as close to the inductor as possible. The
external voltage feedback network R
F
, R
I
, R
S
and
feedforward capacitor C
F
should be placed very
close to the FB pin. Any noise traces like the LX
pin should be kept away from the voltage feedback
network and separated from it by using power
ground copper to minimize EMI.
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| SP6656 | High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6656ER/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output |
| SP6656ER3 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output |
| SP6656ER3-L | 功能描述:DC/DC 開關(guān)控制器 High Eff. 400mA Sync. Buck Reg RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6656ER3-L/TR | 功能描述:DC/DC 開關(guān)控制器 High Eff 400mA Synchronous RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6656ER3TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output |
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