參數(shù)資料
型號(hào)： 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(dòng)態(tài)電壓編程
文件頁(yè)數(shù)： 16/23頁(yè)
文件大小： 707K
代理商： AAT1210
AAT1210
High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
16
1210.2007.02.1.2
Table 2: Output Inductor and Capacitor Values Vs. Output Voltage
V
OUT
5.0
9.0
12.0
15.0
18.0
C1 (Input Capacitor)
C2 (Output Capacitor)
L1 (Boost Inductor)
4.7μF
4.7μF
4.7μF
4.7μF
4.7μF
10μF/6.3V, 10V
10μF/10V
10μF/16V
10μF/16V
4.7μF/25V
0.47μH
0.47μH
1.0/1.2μH
1.0/1.2μH
2.2μH
The diode non-repetitive peak surge current (I
FSM
)
rating should be greater than I
SHT_CKT(MAX)
to
ensure diode reliability under short circuit condi-
tions. Typically, I
FSM
current is specified for con-
duction periods from 8-10ms. If short circuit surviv-
ability is required, it is recommended to verify
I
SHT_CKT(MAX)
under actual operating conditions
across the expected operating temperature range.
Selecting the Boost Inductor
The AAT1210 controller utilizes hysteretic control
and the switching frequency varies with output load
and input voltage. The value of the inductor deter-
mines the maximum switching frequency of the
boost converter. Increased output inductance
decreases the switching frequency, resulting in
higher peak currents and increased output voltage
ripple. The required inductance increases with
increasing output voltage. The inductor is sized
from 0.47μH to 2.2μH for output voltages from 5V
to 18V. This selection maintains high frequency
switching (up to 2MHz), low output ripple and min-
imum solution size. A summary of recommended
inductors and capacitors for 5V to 18V fixed out-
puts is provided in Table 2.
The physical size of the inductor may be reduced
when operating at greater than 2.7V input voltage
and/or less than maximum rated output power is
desired (see Figure 1 for maximum output power
estimate). Figure 4 provides the peak inductor cur-
rent (I
PEAK
) versus output power for different input
voltage levels. The curves are valid for all output
voltages and assume the corresponding induc-
tance value provided in Figure 4. The inductor is
selected to maintain I
PEAK
current less than the
specified saturation current (I
SAT
).
Figure 4: Peak Inductor Current (I
PEAK
) vs.
Output Power.
The RMS current flowing through the boost inductor
is equal to the DC plus AC ripple components.
Under worst-case RMS conditions, the current wave-
form is critically continuous. The resulting RMS cal-
culation yields worst-case inductor loss. The RMS
value should be compared against the manufactur-
er's temperature rise, or thermal derating, guidelines.
In most cases, the inductor's specified I
RMS
current
will be greater than the I
RMS
current required by the
boost inductor.
For a given inductor type, smaller inductor size leads
to an increase in DCR winding resistance and, in
most cases, increased thermal impedance. Winding
resistance degrades boost converter efficiency and
increases the inductor operating temperature.
P
LOSS_INDUCTOR
= I
RMS2
· DCR
I
PEAK
3
I
RMS
=
AAT1210 Peak Inductor Current
vs. Output Power
Output Power (W)
P
0
500
1000
1500
2000
2500
3000
3500
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
V
IN
= 4.5V
V
IN
= 3.6V
V
IN
= 2.7V
相關(guān)PDF資料
PDF描述
AAT1210IRN-0.6-T1 High Power DC/DC Boost Converter with Optional Dynamic Voltage Programming
AAT1230 18V 100mA Step-Up Converter
AAT1230ITP-1-T1 18V 100mA Step-Up Converter
AAT1230ITP-T1 18V 100mA Step-Up Converter
AAT1230_0610 18V 100mA Step-Up Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(kāi)關(guān)控制器 High Power Boost Converter RoHS:否 制造商:ON Semiconductor 輸入電壓: 開(kāi)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(kāi)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(kāi)關(guān)頻率: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*