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參數(shù)資料
| 型號： | MIC2207 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 3mmx3mm 2MHz 3A PWM Buck Regulator |
| 中文描述： | 3mmx3mm 2MHz的3A PWM降壓調(diào)節(jié) |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 780K |
| 代理商： | MIC2207 |
Micrel
MIC2207
Then, determine the output impedance by looking at
the output impedance vs frequency graph. Then
calculating the voltage deviation times the load step;
Z
I
V
×
=
Ripple measurements
To properly measure ripple on either input or output
of a switching regulator, a proper ring in tip
measurement is required. Standard oscilloscope
probes come with a grounding clip, or
a long wire with an alligator clip.
Unfortunately, for high frequency
measurements, this ground clip can
pick-up high frequency noise and
erroneously inject it into the measured
output ripple.
The
standard
accommodates a home made version
by providing probe points for both the
input and output supplies and their
respective grounds. This requires the
removing of the oscilloscope probe
sheath and ground clip from a
standard
oscilloscope
wrapping a non-shielded bus wire
around the oscilloscope probe. If there
does not happen to be any non
shielded bus wire immediately available, the leads
from axial resistors will work. By maintaining the
shortest possible ground lengths on the oscilloscope
probe, true ripple measurements can be obtained.
OUT
OUT
OUT
The output impedance graph shows the relationship
between supply voltage and output impedance. This
is caused by the lower Rdson of the high side
MOSFET and the increase in gain with increased
supply voltages. This explains why higher supply
voltages have better transient response.
+
↓
=
↓
COUT
L
DSON
TOTAL
X
GAIN
X
DCR
R
Z
↑
+
evaluation
board
probe
and
April 2005
17
M9999-040705
www.micrel.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2207_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3mm x 3mm 2MHz 3A PWM Buck Regulator |
| MIC2207YML | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3mmx3mm 2MHz 3A PWM Buck Regulator |
| MIC2207YML TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A 2MHz Integrated Switch Buck Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC2207YML-EV | 功能描述:MIC2207 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board 制造商:microchip technology 系列:- 零件狀態(tài):有效 主要用途:DC/DC，步降 輸出和類型:1，非隔離 功率 - 輸出:- 電壓 - 輸出:1.8V 電流 - 輸出:3A 電壓 - 輸入:2.7 V ~ 5.5 V 穩(wěn)壓器拓撲:降壓 頻率 - 開關(guān):2MHz 板類型:完全填充 所含物品:板 使用的 IC/零件:MIC2207 標準包裝:1 |
| MIC2207YMLTR | 制造商:Micrel 功能描述:DC-DC Converter Single Buck 2.7 - 5.5V |
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