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參數(shù)資料
| 型號： | AAT1210 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Power DC/DC Boost Converter with Optional Dynamic Voltage Programming |
| 中文描述： | 高功率DC / DC升壓轉(zhuǎn)換器可選動態(tài)電壓編程 |
| 文件頁數(shù)： | 18/23頁 |
| 文件大?。?/td> | 707K |
| 代理商： | AAT1210 |
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
18
1210.2007.02.1.2
The output capacitor is sized to maintain the output
load without significant voltage droop (
Δ
V
OUT
) during
the power switch ON interval, when the output diode
is not conducting. A ceramic output capacitor from
4.7μF to 10μF is recommended. Output capacitors
should be rated from 10V to 25V, depending on the
maximum desired output voltage. Ceramic capaci-
tors sized as small as 0603 are available which meet
these requirements.
Minimum 6.3V rated ceramic capacitors are required
at the input. Ceramic capacitors sized as small as
0603 are available which meet these requirements.
Output capacitors should be rated from 6.3V to 25V,
depending on the maximum desired output voltage.
MLC capacitors exhibit significant capacitance
reduction with applied voltage. Output ripple meas-
urements should confirm that output voltage droop
and converter stability is acceptable. Voltage derat-
ing can minimize this factor, but results may vary with
package size and among specific manufacturers.
Output capacitor size can be estimated at a switch-
ing frequency (F
SW
) of 500kHz (worst-case).
The boost converter input current flows during both
ON and OFF switching intervals. The input ripple
current is less than the output ripple and, as a
result, less input capacitance is required. A ceramic
output capacitor from 4.7μF to 10μF is recommend-
ed. The voltage rating of the capacitor must be
greater than, or equal to, the maximum operating
output voltage. X5R ceramic capacitors are avail-
able in 6.3V, 10V, 16V and 25V rating. Ceramic
capacitors sized as small as 0603 are available
which meet these requirements.
Minimum 6.3V rated ceramic capacitors are required
at the input. Ceramic capacitors sized as small as
0603 are available which meet these requirements.
Setting the Output Voltage
The minimum output voltage must be greater than
the specified maximum input voltage plus 0.5V mar-
gin to maintain proper operation of the AAT1210
boost converter. The output voltage may be pro-
grammed through a resistor divider network located
from the output to FB1 and FB2 pins to ground.
Pulling the SELpin high activates the FB1 pin which
maintains a 1.2V reference voltage, while the FB2
reference is disabled. Pulling the SEL pin low acti-
vates the FB2 pin which maintains a 0.6V refer-
ence, while the FB1 reference is disabled.
The AAT1210 output voltage can be programmed
by one of three methods. First, the output voltage
can be static by pulling the SEL logic pin either high
or low. Second, the output voltage can be dynami-
cally adjusted between two pre-set levels within a
2X operating range by toggling the SEL logic pin.
Third, the output can be dynamically adjusted to
any of 16 preset levels within a 2X operating range
using the integrated S
2
Cwire single wire interface
via the EN/SET pin. See Table 5 for static and
dynamic output voltage settings.
Table 5 provides details of resistor values for com-
mon output voltages from 5V to 18V for SEL = High
and SEL = Low options. SEL = High corresponds to
V
OUT(1)
and SEL = Low corresponds to V
OUT(2)
.
Option 1: Static Output Voltage
Most DC/DC boost converter applications require a
static (fixed) output voltage. If a static voltage is
desired, the FB1 pin should be connected directly
to FB2 and a resistor between FB1 and FB2 pins is
not required.
A static output voltage can be configured by pulling
the SELeither high or low. SELpin high activates the
FB1 reference pin to 1.2V (nominal). Alternatively,
the SEL pin is pulled low to activate the FB2 refer-
ence at 0.6V (nominal). Table 5 provides details of
resistor values for common output voltages from 5V
to 18V for SEL = High and SEL = Low options.
I
OUT
· D
MAX
F
S
·
Δ
V
OUT
C
OUT
=
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AAT1210IRN-0.6-DB1 | 制造商:Advanced Analogic Tech 功能描述:Evaluation Board for AAT1210 High Power DC/DC Boost Converter 制造商:SKYWORKS SOLUTIONS 功能描述:Evaluation Board for AAT1210 High Power DC/DC Boost Converter |
| AAT1210IRN-0.6-T1 | 功能描述:DC/DC 開關(guān)控制器 High Power Boost Converter RoHS:否 制造商:ON Semiconductor 輸入電壓: 開關(guān)頻率: 輸出電壓: 輸出電流: 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格: 封裝 / 箱體: |
| AAT1217 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1.2MHz, Micropower Synchronous Step-Up Converter |
| AAT1217_08 | 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:600mA, 1.2MHz, Micropower Synchronous Step-Up Converter |
| AAT1217ICA-1.2-T1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.2MHz ADJ Step Up Converter RoHS:否 制造商:Skyworks Solutions, Inc. 輸出電壓: 輸出電流: 輸出功率: 輸入電壓: 開關(guān)頻率: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Reel |
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