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參數(shù)資料
| 型號(hào)： | 70IMX7-03-7 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 7 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁(yè)數(shù)： | 10/13頁(yè) |
| 文件大小： | 274K |
| 代理商： | 70IMX7-03-7 |
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IMX 7-Family
DC-DC Converters <40 W
Rugged Environment
6 - 22
Edition 2/96 - Melcher AG
MELCHER
The Power Partners.
6.1
Input Transient Voltage Protection
A suppressor diode on the input together with the input filter
provides an effective protection against input transients.
To achieve IEC 801-5, level 2 compliance for 40 IMX 7
types or to withstand the 150 V transient according to
19 Pfl 1 an additional inductor and capacitor should be pro-
vided externally, as shown below. (Not applicable for
20 IMX 7 types, not necessary for 70 IMX 7 types.)
Reverse Polarity Protection at Input
The suppressor diode on the input also provides for reverse
polarity protection by conducting current in the reverse di-
rection, thus protecting the unit. An external fuse is required
to limit this current:
– For 20 IMX 7 a fast 2 A (F2A) fuse is recommended.
– For 40 IMX 7 a fast 1 A (F1A) fuse is recommended.
– For 70 IMX 7 a fast 0.63 A (F.63A) fuse is recommended.
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 limit this current further.
Output Overvoltage Protection
The outputs of the units (single and double) are protected
against overvoltages by a zener diode across one of the
outputs. The main purpose of this feature is to protect
against possible overvoltages which could occur due to a
failure in the feedback control circuit. Under worst case
conditions the suppressor diode will short circuit. The sup-
pressor diode is not designed to withstand externally ap-
plied overvoltages. In the case of the double outputs since
both outputs track each other a suppressor diode is only
provided on one of the outputs.
Description of Options
Table 8: Survey of options
Option
Function
Characteristics
-8
Operational temperature range
TA = –40...85
°C
Extended temperature range. Excludes option D.
-9
Operational temperature range
TA = –40...71 °C
Extended temperature range.
D
Signal Out OK
Available for single output units. Excludes option -8.
X
LED
Uo present
Available for double output units.
M
Surface mount version, SMD
Excludes option C.
C
C-pinout
Excludes option M as well as galvanic isolation between output 1
and 2 of double output units.
Option -8
Extension of the temperature range from standard
–25...71
°C to –40...85°C. The modules will provide full out-
put power with free air convection cooling. UL recognition
up to 80
°C. This option excludes option D.
Option -9
Extension of the temperature range from standard
–25...71
°C to –40...71°C.The modules will provide full out-
put power with free air convection cooling.
Vi+
Vi–
i
C
L
V+
V–
Inductor (L):
Manufacturer: TOKO
Part Number:
494LYF-0098K
Characteristics: 330
H, 0.65 ,
620 mA
Capacitor (C):
Manufacturer: Nippon Chemi-Con
Part Number:
SXE 100 VB 68 M J25
Characteristics: 68
F, 100 V,
105
°C, 190 m
8
5
10
5
0.7
25
10
0.6
5
+
40 IMX 7
Fig. 5
Example for external circuitry to comply with IEC 801-5,
level 2, for 40 IMX 7 types
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| 70IMX7-03-8 | 功能描述:DC/DC轉(zhuǎn)換器 7W (3V) 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: |
| 70IMX7-03-8G | 功能描述:DC/DC轉(zhuǎn)換器 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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| 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: |
| 70IMX7-05-05-8G | 功能描述:DC/DC轉(zhuǎn)換器 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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