RDD05U_11 Datasheet, PDF (8/8 Pages) Chinfa Electronics Ind. Co., Ltd. – DC - DC CONVERTER 5 ~ 6W SINGLE & DUAL OUTPUT

RECOMMENDED CIRCUIT
‧Recommended filter for EN55022 Class B compliance
Vi +
C1
Vi ^-
L1
Vin +
Vo +
RDD05U
Vin -
Vo -
‧Recommended EN 55022 Class B filter circuit layout.
U
RDD05U SERIES
SINGLE & DUAL OUTPUT
‧The commponents used in the above figure, together with the
manufacturer part numbers for these components, are as follows.
C1
RDD05-XXX4U
RDD05-XXX5U
2.2 μF / 50V
MLCC
2.2 μF / 100V
MLCC
L1
1.5mH common
choke
1.5mH common
choke
DERATING AND EFFICIENCY CURVE
Temperature derating curve
100
NATURAL
CONVECTION
COOLING
0
-40
71
100
Ambient Temperature [ ^oC ]
Efficiency Vs Input Voltage
RDD05-05S4U
82
81
80
79
Io : Full Load
78
77
9 12 15 18 21 24 27 30 33 36
Input Voltage (V)
Efficiency Vs Output Load
RDD05-05S4U
85
80
75
70
65
60
Vi : 24VDC
55
50
45
10 20 30 40 50 60 70 80 90 100
Output Load (%)
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2011.01.27
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