- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375371 > AT1313X-GRE (Aimtron Technology Corp.) High Efficiency, Constant Current White-LED Driver PDF資料下載
參數(shù)資料
| 型號(hào)： | AT1313X-GRE |
| 廠商： | Aimtron Technology Corp. |
| 英文描述： | High Efficiency, Constant Current White-LED Driver |
| 中文描述： | 高效率，恒定電流白光LED驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | AT1313X-GRE |
AT1313
High Efficiency, Constant Current
White-LED Driver
Applications Information
External components of main boost converter can be designed by performing simple calculations. It
need to follow regulation by the output voltage and the maximum load current, as well as maximum
and minimum input voltages. Begin by selecting an inductor value. Once L is know, choose the diode
and capacitors.
Boost inductor
Inductor selection depends on input voltage, output voltage, maximum current , switching frequency
and availability of inductor values. The following boost circuit equations are useful in choosing the
inductor values based on the application. They allow the trading of peak current and inductor value
while allowing for consideration of component availability and cost.
The peak inductor current is given by:
I
I
I
LAVG
Lpeak
+
=
2
7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:
http://www.aimtron.com.tw
10/31/2006 REV:2.0 Email:
service@aimtron.com.tw
9
D
I
I
O
LAVG
L
=
1
where:
I
L
is the inductor peak-to-peak current ripple and is decided by:
D
L
OSC
in
L
f
V
I
×
=
D is the MOSFET turn on ratio and is decided by:
V
V
D
=
O
in
O
V
f
OSC
is the switching frequency.
The inductor should be chosen to be able to handle this current and inductor saturation current rating
should be greater than I
PEAK
.
Diode selection
The output diode has average current of I
O
, and peak current the same as the inductor’s peak current
and a voltage rating at least 1.5 times the output voltage. Schottky diode is recommended and it should
be able to handle those current.
Output Capacitor
The AT1313 is specially compensated to be stable with capacitors which have a worst- case minimum
value of 1uF at the particular V
OUT
being set. Output ripple voltage requirements also determine the
minimum value and type of capacitors. Output ripple voltage consists of two components the voltage
drop caused by the switching current through the ESR of the output capacitor and the charging and
discharging of the output capacitor:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT1314 | High-Efficiency Step-Down Current Regulator For LEDs |
| AT1314S-GRE | High-Efficiency Step-Down Current Regulator For LEDs |
| AT1361 | 1MHz,1A Synchronous Buck Converter |
| AT1361X_GRE | 1MHz,1A Synchronous Buck Converter |
| AT1362 | Synchronous Buck Converter With Power Good Detector & LDO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT1314 | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:High-Efficiency Step-Down Current Regulator For LEDs |
| AT1314S-GRE | 制造商:AIMTRON 制造商全稱:AIMTRON 功能描述:High-Efficiency Step-Down Current Regulator For LEDs |
| AT13169 | 制造商:Delphi Corporation 功能描述:SPRING HOLDER |
| AT-1319-10-8-ST-ADAPT- | 制造商:TE Connectivity 功能描述:AT-1319-10-8-ST-ADAPT-AS |
| AT-1319-10-8-ST-ADAPT-AS | 制造商:TE Connectivity 功能描述:AD-1319-10 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。