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參數(shù)資料
| 型號： | 70IMX4-15-8G |
| 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)： | 8/12頁 |
| 文件大小： | 291K |
| 代理商： | 70IMX4-15-8G |
BCD20006-G Rev AA, 8-Apr-09
Page 5 of 12
www.power-one.com
IMX4 DC-DC Series Data Sheet
4-Watt DC-DC Converters
Input Transient Voltage Protection
In many applications transient voltages on the converter input
are always possible. These may be caused for example by
short circuits between Vi+ and Vi–, where the network
inductance may generate high energy pulses.
In order to protect the converter, a large transient voltage
suppressor is fitted to the input; see table below.
Table 4: Built-in transient voltage suppressor
Model
Breakdown
Peak power
Peak pulse
voltage
at 1 ms
current
VBR nom
PP
IPP
20IMX4
40 V
600 W
10.3 A
40IMX4
100 V
600 W
4.1 A
70IMX4
150 V
600 W
2.9 A
Fig. 8
External circuitry to comply with
IEC/EN 61000-4-5, level 2.
Vi+
Vi–
Ci
Li
D
+
04036b
If transients generating currents above the peak pulse current
I PP are possible, an external limiting network such as the circuit
shown in figure 8 is recommended. It provides compliance with
transients according to IEC/EN 61000-4-5, level 2. The comp-
onents are specified in table 5.
If 40IMX4 models should withstand 150 V transients according
to 19Pfl1, the same external circuitry with similar components
as shown in figure 8 can be used.
Fuse and Reverse Polarity Protection
A suppressor diode on the input also protects against reverse
polarity input voltage. An external fast fuse is required to limit
this reverse current:
Table 6: External input fuse
Model
Fuse type
20IMX4
Fast 1 A
40IMX4
Fast 0.5 A
70IMX4
Fast 0.315 A
Table 5: Components for the circuitry fig. 8
Model
20IMX4
40IMX4
70IMX4
Li
330
μH, 0.42 Ω
330
μH, 0.42 Ω
330
μH, 0.65 Ω
1 A
0.6 A
0.3 A
Ci
68
μF, 50 V
68
μF, 100 V
100
μF, 200 V
D
ON 1.5KE 39 A
ON 1.5KE 82 A
–
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| 70IMX7-05-05-8 | 功能描述:DC/DC轉(zhuǎn)換器 7W (2x 5V) DC Input (40-121V) RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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