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参数资料
| 型号： | LS2540-7EPD0B1 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT AC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE S02, MODULE |
| 文件页数： | 4/33页 |
| 文件大小： | 438K |
| 代理商： | LS2540-7EPD0B1 |
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S Series Data Sheet
100 Watt AC-DC and DC-DC Converters
APR 26, 2006 revised to SEP 25, 2006
Page 12 of 33
www.power-one.com
Fig. 15
Typical output response as a function of inhibit control
Table 5: Inhibit characteristics
Characteristic
Conditions
min
typ
max Unit
Vinh Inhibit Vo = on Vi min - Vi max –50
0.8
V
voltage
Vo = off
2.4
50
Iinh Inhibit current
Vinh = 0
–400
A
tr
Rise time
30
ms
tf
Fall time
depending on
Io
0
t
0
Inhibit
1
0.1
1
Vo/Vo nom
tr
tf
06001
Sense Lines
(Only single output models)
Important: Sense lines must always be connected! Incorrectly
connected sense lines may activate the overvoltage limitation,
resulting in a permanent short-circuit of the output.
This feature allows for compensation of voltage drops across the
connector contacts and if necessary, across the load lines. If the
sense lines are connected at the load rather than directly at the
connector, the user should ensure that the voltage differences
specified in the table below are not exceeded. We recommend
connecting the sense lines directly at the female connector.
To ensure correct operation, both sense lines (S+ and S–) should
be connected to their respective power outputs (Vo1+ and Vo1–)
and the voltage difference between any sense line and its
respective power output pin (as measured on the connector)
should not exceed the following values:
Table 6: Maximum voltage compensation allowed using
sense lines
Output
Total voltage difference
Voltage difference
voltage
between sense lines and
between
their respective outputs
Vo– and S–
5.1 V
< 0.5 V
< 0.25 V
12, 15, 24 V
< 1.0 V
< 0.25 V
If the output voltages are increased above Vo nom via the R-input
control, option P setting, remote sensing or option T, the output
currents must be reduced accordingly so that Po nom is not
exceeded.
Auxiliary Functions
i Inhibit for Remote On and Off
Note: With open i input the output is disabled.
The outputs may be enabled or disabled by means of a logic
signal (TTL, CMOS, etc.) applied between the inhibit input i and
the negative pin of output 1 (Vo1–). In systems with several
converters, this feature can be used to control the activation
sequence of the converters. If the inhibit function is not required,
connect the inhibit pin 18 to pin 14 to enable the outputs (active
low logic, fail safe).
Vi+
Vi–
Vo–
i
Vo+
Iinh
Vinh
06031
1.6
0.8
0
–0.8
–50
Vinh [V]
Iinh [mA]
–30
0
–10
10
30
50
2.0
1.2
0.4
–0.4
Vinh = 0.8 V
Vo = on
Vo = off
Vinh = 2.4 V
06032
Fig. 13
Definition of Vinh and Iinh.
Fig. 14
Typical inhibit current Iinh versus inhibit voltage Vinh
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