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參數資料
| 型號： | RB0530L-30 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2-ch DC/DC Converter IC |
| 中文描述： | 2通道直流/直流轉換器集成電路 |
| 文件頁數： | 30/36頁 |
| 文件大?。?/td> | 380K |
| 代理商： | RB0530L-30 |
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MB39A104
30
Smoothing Capacitor
The smoothing capacitor is an indispensable element for reducing ripple voltage in output. In selecting a smooth-
ing capacitor it is essential to consider equivalent series resistance (ESR) and allowable ripple current. Higher
ESR means higher ripple voltage, so that to reduce ripple voltage it is necessary to select a capacitor with low
ESR. However, the use of a capacitor with low ESR can have substantial effects on loop phase characteristics,
and therefore requires attention to system stability. Care should also be taken to use a capacity with sufficient
margin for allowable ripple current. This application uses the (OS-CON
TM
) 6SVP82M made by Sanyo. The ESR,
capacitance value, and ripple current can be calculated from the following formulas.
Equivalent Series Resistance : ESR
V
O
I
L
Capacitance value : C
L
≥
2
π
f (
V
O
I
L
×
ESR)
Ripple current : IC
L
rms
Example: Using the 6SVP82M
Rated voltage
=
6.3 V, ESR
=
50 m
, maximum allowable ripple current
=
1570 mArms
Equivalent series resistance
CH1
ESR
≤
1
2
π
fC
L
C
L
I
L
IC
L
rms
≥
(V
IN
V
O
) ton
2
√
3L
ESR
≤
V
O
I
L
0.050
0.491
1
2
π
fC
L
≤
1
2
π
×
500
×
10
3
×
82
×
10
6
≤
98.0 m
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