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参数资料
| 型号： | R-739.0P |
| 厂商： | RECOM Power Inc. |
| 英文描述： | RECTIFIER SCHOTTKY DUAL 10A 35V 125A-ifsm 0.7V-vf 0.1mA-ir TO-220AB 50/TUBE |
| 中文描述： | INNOLINE直流/直流转换器 |
| 文件页数： | 3/5页 |
| 文件大小： | 90K |
| 代理商： | R-739.0P |
www.recom-international.com
3
24-August-2005
R-7xxxP_D
Series
Output Current vs Input Voltage
INNOLINE
DC/DC-Converter
+
/
/
0,-#$1,-*#2
How to calculating the max output current
The internal power dissipation(P
D
)follows the equation:
P
D
= Io × Vo × (1-
η
)
Io = P
D
/ Vo × (1-
η
)
Where
P
D
= Internal power dissipation
Io = Output current
Vo = Output voltage
η
= Efficiency
Example: R-745.0P , at Vin = 28Vdc ,Vo = 5Vdc ,
η
=91% (see table 1)
(a) When Ta = 60°C , P
D
= 1.4 Watt (see fig-1)
Io = 1.4(W) / 5(V) × (1-0.91) = 3.11(A)
(b) When Ta = 85°C , P
D
= 1 Watt (see fig-1)
Io = 1(W) / 5(V) × (1-0.91) = 2.222(A)
(
c) At Vin = 12Vdc efficiency = 94% (see table 1)
When Ta = 85°C , P
D
= 1 Watt (see fig-1)
Io = 1(W) / 5(V) × (1-0.94) =3.33(A)
Characteristics
$
$,
3
3
3/
3
3/
3
$
$,
/
/
R-72xx / R-73xx
Ripple VS Vin
R-74xx
Ripple VS Vin
(
(445,56
/
/
(
(445,56
3/
3
3/
R-72xx / R-73xx
Efficiency VS Vin
R-74xx
Efficiency VS Vin
(
(445,56038
/
/
/
(
(445,56038#9
/
/
R-72xx / R-73xx / R-74xx
Efficiency / Load Vin=Min
R-72xx / R-73xx / R-74xx
Efficiency / Load Vin=Max
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