參數(shù)資料
型號(hào)： AAT1149IJS-0.6-T1
廠商： Advanced Analog Technology,lnc.
英文描述： 3MHz Fast Transient 400mA Step-Down Converter
中文描述： 3MHz的快速瞬態(tài)400mA的降壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 13/20頁(yè)
文件大?。?/td> 1800K
代理商： AAT1149IJS-0.6-T1
AAT1149
3MHz Fast Transient
400mA Step-Down Converter
1149.2006.11.1.0
13
put capacitor. During a step increase in load cur-
rent, the ceramic output capacitor alone supplies
the load current until the loop responds. Within two
or three switching cycles, the loop responds and
the inductor current increases to match the load
current demand. The relationship of the output volt-
age droop during the three switching cycles to the
output capacitance can be estimated by:
Once the average inductor current increases to the
DC load level, the output voltage recovers. The
above equation establishes a limit on the minimum
value for the output capacitor with respect to load
transients.
The internal voltage loop compensation also limits
the minimum output capacitor value to 4.7
μ
F. This
is due to its effect on the loop crossover frequency
(bandwidth), phase margin, and gain margin.
Increased output capacitance will reduce the
crossover frequency with greater phase margin.
The maximum output capacitor RMS ripple current
is given by:
1
2
3
V
OUT
· (V
IN(MAX)
- V
OUT
)
L
·
F
S
·
V
IN(MAX)
RMS(MAX)
I
=
·
·
C
OUT
=
3
·
Δ
I
LOAD
V
DROOP
·
F
S
Figure 1: AAT1149 Evaluation Board
Top Side.
Figure 2: Exploded View of Evaluation
Board Top Side.
Figure 3: AAT1149 Evaluation Board
Bottom Side.
相關(guān)PDF資料
PDF描述
AAT1149 3MHz Fast Transient 400mA Step-Down Converter
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AAT1149IUV-0.6-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:3MHz Fast Transient 400mA Step-Down Converter
AAT1150 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 1A Step-Down DC/DC Converter
AAT1150_06 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 1A Step-Down DC/DC Converter
AAT1150IKS-1.0-T1 制造商:Skyworks Solutions Inc 功能描述:SKYAAT1150IKS-1.0-T1 DC/DC CONVERTERS (S 制造商:SKYWORKS SOLUTIONS 功能描述:AAT1150 Series 5.5 V 1 MHz 1 A Synchronous Buck DC/DC Converter - MSOP-8 制造商:Skyworks Solutions Inc 功能描述:DC TO DC CONVERTER
AAT1150IKS-1.5-T1 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:1MHz 1A Step-Down DC/DC Converter
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