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參數(shù)資料
| 型號： | AAT1123_07 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | 1MHz Step-Down Converter |
| 中文描述： | 1MHz的降壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 568K |
| 代理商： | AAT1123_07 |
AAT1123
1MHz Step-Down Converter
1123.2007.02.1.6
11
The maximum input capacitor RMS current is:
The input capacitor RMS ripple current varies with
the input and output voltage and will always be less
than or equal to half of the total DC load current.
for V
IN
= 2 x V
O
The term
age ripple and input capacitor RMS current equations
and is a maximum when V
O
is twice V
IN
. This is why
the input voltage ripple and the input capacitor RMS
current ripple are a maximum at 50% duty cycle.
appears in both the input volt-
The input capacitor provides a low impedance loop
for the edges of pulsed current drawn by the
AAT1123. Low ESR/ESL X7R and X5R ceramic
capacitors are ideal for this function. To minimize
stray inductance, the capacitor should be placed
as closely as possible to the IC. This keeps the
high frequency content of the input current local-
ized, minimizing EMI and input voltage ripple.
The proper placement of the input capacitor (C2) can
be seen in the evaluation board layout in Figure 2.
· 1
-
IN
O
V
O
V
IN
I
O
2
RMS(MAX)
I
=
· 1
-
= D
· (1 - D) = 0.5
2
=
V
IN
V
O
V
IN
O
1
2
I
RMS
= I
O
· · 1
-
V
IN
O
V
O
V
IN
Figure 2: AAT1123 Evaluation Board
Top Side.
Figure 3: Exploded View of Evaluation
Board Top Side Layout.
Figure 4: AAT1123 Evaluation Board
Bottom Side.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AAT1123IJS-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
| AAT1123IJS-1.2-T1 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz Step-Down Converter |
| AAT1125IJS-0.6-T1 | 功能描述:開關變換器、穩(wěn)壓器與控制器 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| AAT1126 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1MHz Step-Down Converter |
| AAT1126IGV-0.6-T1 | 制造商:Skyworks Solutions Inc 功能描述:SKYAAT1126IGV-0.6-T1 DC/DC CONVERTERS (S 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER |
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