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參數(shù)資料
| 型號： | PSB125-9IR |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 3/13頁 |
| 文件大小： | 220K |
| 代理商： | PSB125-9IR |
PSB Series Extended Data Sheet
Positive Switching Regulator (Industrial)
REV. OCT 17, 2003
Page 11 of 13
Table 9: Insulation concept leading to an SELV output circuit
Conditions Front end
Switching regulator
Result
Supply
Minimum required grade
Maximum
Minimum required safety
Measures to achieve the
Safety status of
voltage
of isolation, to be provided DC output
status of the front end
specified safety status of the
the switching
by the AC-DC front end,
voltage
output circuit
regulator output
including mains supplied
from the
circuit
battery charger
front end 1
Battery
Double or Reinforced
≤60 V
SELV circuit
None
SELV circuit
supply,
>60 V
Earthed hazardous voltage Input fuse 3 and non
Earthed SELV
considered
secondary circuit 2
accessible case 5
circuit
as secon-
Unearthed hazardous
Input fuse 3 and unearthed,
Unearthed SELV
dary circuit
voltage secondary circuit 5
non accessible case 5
circuit
Hazardous voltage
Input fuse 3 and earthed output Earthed SELV
secondary circuit
circuit 4 and non accessible
circuit
case 5
Mains
Basic
≤60 V
Earthed SELV circuit 4
None
-250 V AC
ELV circuit
Input fuse 3 and earthed output
>60 V
Hazardous voltage
circuit 4 and non accessbile
secondary circuit
case 5
Double or reinforced
≤60 V
SELV circuit
None
SELV circuit
>60 V
Double or reinforced insu-
Input fuse 3 and unearthed
Unearthed SELV
lated unearthed hazardous and non accessible case 5
circuit
voltage secondary circuit 5
1 The front end output voltage should match the specified input voltage range of the switching regulator.
2 The conductor to the Gi– terminal of the switching regulator has to be connected to earth by the installer according to the relevant
safety standard, e.g. IEC/EN 60950.
3 The installer shall provide an approved fuse (slow blow type with the lowest current rating suitable for the application, max. 12.5 A) in
a non-earthed input conductor directly at the input of the switching regulator. If Vo+ is earthed, insert the fuse in the Gi- line. For UL’s
purpose, the fuse needs to be UL-listed. If option C is fitted, a suitable fuse is already built-in in the Vi+ line.
4 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
5 Has to be insulated from earth by double or reinforced insulation according to the relevant safety standard, based on the maximum
output voltage from the front end.
Description of Options
-9
Extended Temperature Range
The operational ambient temperature range is extended to
TA = –40 to 71°C. (TC = –40 to 95°C, TS = –55 to 100°C.)
P
Potentiometer
Option P excludes the R-function. The output voltage
Vo
can be adjusted with a screwdriver in the range
92 - 108%
Vo nom.
However, the minimum differential voltage
DVi o min be-
tween input and output voltages as specified in
Electrical
Input Data should be maintained.
L
Input Filter
Option L is recommended to reduce superimposed inter-
ference voltages and to prevent oscillations, if input lines
exceed approx. 5 m in total length. The fundamental wave
(approx. 120 kHz) of the reduced interference voltage be-
tween Vi+ and Gi– has, with an input line inductance of
5 H, a maximum magnitude of 60 mVAC. A reduction can
be achieved by insertion of a capacitor across the input
(e.g. plastic foil between Vi+ and Gi–).
The input impedance of the switching regulator at 120 kHz
is about 17
. The harmonics are small in comparison with
the fundamental wave. See also
Electrical Input Data: RFI.
With option L, the maximum permissible additionally su-
perimposed ripple
ui of the input voltage (rectifier mode) at
a specified input frequency
fi has the following values:
Units with max input voltage 40 V:
ui max = 12 Vpp at 100 Hz or Vpp = 1200 Hz/fi 1V
Units with max input voltage 80 V:
ui max = 22 Vpp at 100 Hz or Vpp = 2200 Hz/fi 1V
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