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參數資料
| 型號： | FW250H1 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 250 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 12/20頁 |
| 文件大小： | 623K |
| 代理商： | FW250H1 |
2
Tyco Electronics Corp.
Data Sheet
September 2001
36 Vdc to 75 Vdc Input, 24 Vdc Output; 250 W to 300 W
FW250H1 and FW300H1 Power Modules; dc-dc Converters:
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow, dc fuse with a maximum rating of 20 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Parameter
Symbol
Min
Max
Unit
Input Voltage:
Continuous
Transient (100 ms)
VI
VI, trans
—
80
100
Vdc
I/O Isolation Voltage
—
1500
V
Operating Case Temperature
(See Thermal Considerations section and
TC
–40
100
°C
Storage Temperature
Tstg
–55
125
°C
Parameter
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
VI
36
48
75
Vdc
Maximum Input Current (VI = 0 V to 75 V):
FW250H1
FW300H1
II, max
—
12
A
Maximum Input Current (VI = 0 V to 75 V):
FW250H1
FW300H1
II, max
—
12
A
Inrush Transient
i2t—
—
2.0
A2s
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 H source impedance;
see Figure 12.)
II
—10
—
mAp-p
Input Ripple Rejection (120 Hz)
—
60
—
dB
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