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參數(shù)資料
| 型號(hào)： | AV34063 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 射頻放大器 |
| 文件頁(yè)數(shù)： | 8/8頁(yè) |
| 文件大?。?/td> | 257K |
| 代理商： | AV34063 |
@vic
AV34063
Copyright Avic Electronics Corp.
8
Website:
http://www.avictek.com
Note 5 :
If the output switch is driven into hard saturation (non-Darlington configuration) at low switch
currents (
≤
300mA) and high driver currents (
≥
30mA), it may take up to 2.0μs to come out of sturation.
This condition will shorten the off time at frequencies
≥
30KHz, and is magnified at high temperatures.
This condition does not occur with a darlington configuration, since the output switch cannot saturate.
If a non-darlington is used, the following output drive condition is recommended.
V
sat
=Saturation voltage of the output switch.
V
F
=Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
V
in
-Nominal input voltage.
V
out
-Desired output voltage, V
out
= 1.25(1+R2/R1).
I
out
- Desired output current.
F
min
-Minimum desired output switching frequency at the selected valued of Vin an Io.
V
ripple(p-p)
- Desired peak-to-peak output ripple voltage.In practice, the calculated capacitor
value will need to be increased due to its equivalent series resistance and board layout.The
ripple voltage should be kept to a low value since it will directiy affect the line and load
regulation.
Figure13. Design Formula Table
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