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参数资料
| 型号： | PSS249-7EC |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE S01, MODULE |
| 文件页数： | 12/18页 |
| 文件大小： | 366K |
| 代理商： | PSS249-7EC |
PSS, PSK Extended Data Sheet
Positive Switching Regulator (Rugged)
REV. FEB. 25 2004
Page 3 of 18
Electrical Input Data
General Conditions:
TA = 25°C, unless TC is specified
Table 2a: Input data
Input
PSS 129
PSS 129 2
PSS 249
PSK 1212
PSK 1212 2
PSK 2412
Characteristics
Conditions
min typ max
Unit
Vi
Operating input voltage 1
Io = 0 - Io nom
18
144
22
144
31
144
VDC
DVio min Min. diff. voltage Vi – Vo
TC min - TC max
677
Vi o
Undervoltage lock-out
12
24
Ii 0
No load input current
Io = 0, Vi min - Vi max
50
mA
Iinr p
Peak value of inrush current
Vi nom, with option E
4.5
A
Vi RFI
Input RFI level, EN 55011/22
Vi nom, Io nom
BB
B
0.15 - 30 MHz
1 Surges up to 156 V for 2 s.
2 Output set to 15 V at R control input, see Auxiliary Functions.
Control
circuit
Go–
Vo+
Gi–
Vi+
R
i
Io
Vo
I i
Vi
03024
Input
Filter
S+
CS
S–
Option P
Option C
Option
E
+
–
4
6
20
22
14
16
18
8
10
30
32
26
28
24
Fig. 1
Block diagram
Functional Description
The switching regulators are designed using the buck con-
verter topology. The input is not electrically isolated from
the output. During the on period of the switching transistor,
current is transferred to the output and energy is stored in
the output choke. During the off period, this energy forces
the current to continue flowing through the output chocke
to the load and back through the freewheeling diode.
Regulation is accomplished by varying on/off duty cycle.
These
regulators
are
ideal
for
a
wide
range
of
applications, where input to output isolation is not
necessary, or where already provided by an external front
end (e.g. a transformer with rectifier). To optimise
customer’s needs, additional options and accessories are
available.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PSS249-9 | 制造商:Power-One 功能描述:DC/DC PS SGL-OUT 24V 9A 216W 15PIN - Bulk |
| PSS25 | 制造商:WALL 制造商全称:Wall Industries,Inc. 功能描述:25 Watt Single Output AC/DC Power Supply |
| PSS-25-12 | 制造商:WALL 制造商全称:Wall Industries,Inc. 功能描述:25 Watt Single Output AC/DC Power Supply |
| PSS-25-15 | 制造商:WALL 制造商全称:Wall Industries,Inc. 功能描述:25 Watt Single Output AC/DC Power Supply |
| PSS-25-24 | 制造商:WALL 制造商全称:Wall Industries,Inc. 功能描述:25 Watt Single Output AC/DC Power Supply |
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