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参数资料
| 型号： | TXS75ZA-NP2R |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 112 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | 2.400 X 3.450 INCH, 0.500 INCH HEIGHT, 3/4 BRICK PACKAGE-14 |
| 文件页数： | 11/27页 |
| 文件大小： | 2635K |
| 代理商： | TXS75ZA-NP2R |
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Product Specification
TXS Series: 75…120 A DC-DC Converters
36 to 75 V DC Input, 1.2, 1.5, 1.8, 2.0 and 2.5 V Output, 90 W to 250 W
REV. FEB 18, 2003
19 of 27
www.power-one.com
User accessible output
If a circuit connected to the converter output is
operator accessible, the output should be SELV.
The
following
table
shows
some
possible
installation configurations. However it is the sole
responsibility of the installer/system designer to
assure the compliance with the relevant and
applicable safety regulations.
The output is considered SELV, according to EN
60950:2000, UL 60950, CSA 60950-00,
if one of the
following requirements is met in the system design:
Output circuit
Power Bus Voltage
(Input of TXS module)
note A/B
Earthed
SELV
Unearthed
SELV
Earthed/Unearthed
SELV
note 1
Earthed/Unearthed
ELV
note 2/6
note 3
Unearthed
TNV-1
note 4, 5
Unearthed
TNV-2
note 5
Unearthed
TNV-3
note 4, 5
Earthed
hazardous secondary
not
allowed
Unearthed
hazardous secondary
note 2
note 7
Table 10: Installation configurations to achieve
an SELV output with TXS modules.
AC-DC
frond end
or
Battery *
TXS
Module
Mains
SELV
Input
Fuse
Output circuit
Intermediate power
~
Earth connection
Suppressor Diode
and
Earth connection
* Battery insulated
from primary circuits
+
-
Figure 42: Supply system with TXS. All possible
additional elements are shown. See notes
1 to 7 if they are required or not.
Notes
A: An input fuse should be provided in the un-
earthed input path (fuses see pages 3/18).
B: The power bus voltage should be limited or
regulated to maximum 75 V DC in order of not
to damage the TXS modules.
1:
No additional requirements
2:
All of the following points should be fulfilled:
- A protective device limiting Uo to 60 V DC
max. should be connected between the
output lines of the TXS. (Clamp, Suppressor
Diode, …)
- The output should be earthed.
- The earth connections and the protective
device should be adequately dimensioned to
allow the fuse to reliably interrupt.
- The power system consisting of the TXS
modules and the primary supply (see figure
42) should successfully pass the SELV
reliability tests.
3:
All of the following points should be fulfilled:
- The power bus and the output circuit needs
to be floating:
- To achieve an ELV power bus voltage, the
front end needs at least basic insulation.
- The supply of the front end, which feeds the
power bus should have a nominal voltage
below 150 V AC or 200 V DC. A transient
protection to 1500 V peak is required.
- A protection diode is required on the input of
the module.
4:
To achieve a TNV power bus voltage, the
power bus should be isolated from any other
hazardous voltage including the AC mains by
reinforced insulation. In addition, it needs to
be reliably isolated from earth.
5
An impulse or high voltage test is required.
TXS modules were already tested for this
requirement. If hand held equipment is directly
connected to the output circuit, the test should
be repeated together with this equipment (see
safety standard).
6:
The conditions for an ELV power bus need to
be fulfilled. To achieve an ELV power bus
voltage, the front end needs at least basic
insulation.
7:
This configuration is only possible if the
manufacturing at Power-One follows a special
inspection
program.
Consult
factory
if
required. It is much easier, if the unearthed
hazardous voltage can be characterized as
TNV-2 circuit. ( note 5 applies).
ELV or TNV outputs
If the output of a TXS needs only to be an ELV or
TNV circuit, less stringent requirements apply.
The power module has an ELV output if the input
is ELV or hazardous with a nominal voltage below
200 V DC. The power module has a TNV output if
the input is TNV. No additional requirements apply.
For other combinations, consult the safety standards.
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