WDD20-03SXU(2010) 查看數據表（PDF） - CHINFA ELECTRONICS
零件编号
产品描述 (功能)
生产厂家
WDD20-03SXU Datasheet PDF : 8 Pages
| |||
RECOMMENDED CIRCUIT
‧The commponents used in the above figure, together with the
manufacturer part numbers for these components, are as follows.
C1
C2
C3
WDD20-XXX1U 3.3μF / 50V 3.3μF / 50V InF / 2KV
MLCC
MLCC
MLCC
1μF / 50V 1μF / 50V
WDD20-XXX2U MLCC
MLCC
InF / 2KV
MLCC
3.3μF / 100V 3.3μF / 100V InF / 2KV
WDD20-XXX3U
MLCC
MLCC
MLCC
L1
1.5mH
Common
Choke
1.5mH
Common
Choke
0.5mH
Common
Choke
WDD20U SERIES
SINGLE & DUAL OUTPUT
DERATING AND EFFICIENCY CURVE
Temperature derating curve
100
12V, 15V & dual
NATURAL
CONVECTION
COOLING
3.3V & 5V
0
-40
61 71
100
Ambient Temperature [ oC ]
DERATING AND EFFICIENCY CURVE
Efficiency Vs Input Voltage
WDD20-05S2U
89
88
87
86
85
Io : Full Load
84
18 20 22 24 26 28 30 32 34 36
Input Voltage (V)
Efficiency Vs Output Load
WDD20-05S2U
90
85
80
75
70
65
60
10 20 30
40 50 60 70
Output Load (%)
Vi : 24VDC
80 90 100
Fig. 1 Trim connection
( For Single output )
( For Dual output )
6 Vo +
7 Vo -
Trim
8
Rext 1
6 Vo +
7 Vo -
Trim
8
Rext 2
5 Vo +
6 com
Vo -
7
Trim
8
Rext 1
5 Vo +
6 com
Vo -
7
Trim
8
Rext 2
Table 1 Typical resistor values for various output voltage adjustment settings
Type
WDD20-03SXU
Type
WDD20-05SXU
WDD20-12SXU
WDD20-15SXU
WDD20-05DXU
WDD20-12DXU
WDD20-15DXU
Rext 1
Vo nom -2.5%
Vo nom -5%
820Ω
0Ω
Vo nom -5%
Vo nom -10%
3.9KΩ
0Ω
130KΩ
18KΩ
130KΩ
20KΩ
33KΩ
12KΩ
120KΩ
56KΩ
180KΩ
75KΩ
Rext 2
Vo nom +2.5%
Vo nom +5%
7.5KΩ
3KΩ
Vo nom +5%
Vo nom +10%
4.7KΩ
0Ω
10KΩ
1KΩ
20KΩ
3.9KΩ
10KΩ
3KΩ
12KΩ
2KΩ
10KΩ
1.2KΩ
www.chinfa.com
2010.05.21
sales@chinfa.com
P4
Share Link: 