參數(shù)資料
型號: 70IMX4-0505-8G
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT PACKAGE-24
文件頁數(shù): 7/12頁
文件大?。?/td> 291K
代理商: 70IMX4-0505-8G
BCD20006-G Rev AA, 8-Apr-09
Page 4 of 12
www.power-one.com
IMX4 DC-DC Series Data Sheet
4-Watt DC-DC Converters
Table 3: Input electrolytic capacitors
Model
20IMX4
40IMX4
70IMX4
C i
100
μF
47
μF
330
μF
50 V
100 V
200 V
Electrical Input Data
General conditions: TA = 25 °C, unless TC is specified.
Table 2: Input Data
Input
20IMX4
40IMX4
70IMX4
Unit
Characteristics
Conditions
min typ max min typ max min typ max
Vi
Input voltage range
TC min to TC max
8.4
36 16.8 2
75
40
121
VDC
Vi nom
Nominal input voltage
Io = 0 to Io nom
20
40
70
Vi sur
Repetitive surge voltage
abs. max input (3 s)
40
100
150
tstart-up
Converter start-up time 1
Worst case condition at
0.25 0.5
s
Vi min and full load
trise
Rise time 1
Vi nom
resistive load
5
ms
Io nom
capacitive load
12
Ii o
No-load input current
Io = 0, Vi min to Vi max
15
20
5
10
5
10
mA
C i
Input capacitance
for surge calculation
0.54
0.3
0.15
μF
Iinr p
Inrush peak current
Vi = Vi nom 3
3.7
4.2
5.6
A
fs
Switching frequency
Vi min to Vi max, Io = 0 to Io nom
approx. 400
approx. 400kHz
Ii rr
Reflected ripple current
Io = 0 to Io nom
100
60
30
mApp
vi RFI
Input RFI level
EN 55011/55022 4
AA
A
conducted
1
Measured with a resistive or max. admissible capacitive load; see fig. 5.
2
Operation at lower input voltage possible: Po approx. 80% of Po nom at Vi min = 14.4 V
3
Source impedance according to ETS 300132-2, version 4.3.
4
External capacitors required according to table 3.
Fig. 5
Converter start-up and rise time
Inrush Current
The inrush current has been kept as low as possible by
choosing a very small input capacitance. A series resistor may
be inserted in the input line to further limit this current.
Fig. 6
Typ. inrush current at Vi nom, Po nom versus time measured
according to ETS 300132-2, version 4.3 (40IMX4).
Fig. 7
Input capacitors
Vo nom
Vo
tstart up
trise
t
04008a
A
0
10
20
30
40
s
04034a
0
1
2
3
Start-up
Filter to Comply with EN 55011/55022
Electromagnetic emission requirements according to table
Electrical Input Data can be achieved by adding an external
capacitor as close as possible to the input terminals (see fig. 7
and table 3).
Vi+
Vi–
Ci
04035b
+
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