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| 型號： | LKP5741-5RD3 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 250 W AC-DC PWR FACTOR CORR MODULE |
| 封裝： | HEAT SINK, METAL, CASE K02, MODULE |
| 文件頁數(shù)： | 2/23頁 |
| 文件大?。?/td> | 1150K |
| 代理商： | LKP5741-5RD3 |
KP Series
AC-DC Converters >100 Watt
Rugged Environment
Edition 4/4.99
10/23
MELCHER
The Power Partners.
Battery Charging/Temperature Sensor
The LKP 5740-6R, LKP 5741-5R, LKP 5742-7R are in-
tended for lead acid battery charger applications. For an
optimum battery charging and life expectancy of the battery
an external temperature sensor may be connected to the
R-input. The sensor is mounted as close as possible to the
battery pole and adjusts the output voltage of the LKP unit
according to the temperature of the battery (which is related
to the load of the battery and the ambient temperature).
Depending on the cell voltage and the temperature coeffi-
cient of the battery, different sensor types are available.
For more information please ask Melcher.
Fig. 17
Dependance of output voltage vs. temperature for defined
temperature coefficient.
2.10
2.15
2.20
2.25
2.30
2.35
2.40
Cell voltage [V]
0
5
10
15
20
25
30
35
40
45
50
[
°C]
06123
Uo max
Uz = 2.27 V, –3.5 mV/K
Uz = 2.23 V, –3.5 mV/K
Uo nom
0
t
0
Inhibit
1
0.1
1
Uo/Uo nom
tr
tf
06001
Table 5: Inhibit characteristics
Characteristic
Conditions
min
typ
max Unit
Uinh Inhibit
Uo = on
Ui min…Ui max
–50
0.8
V
voltage
Uo = off
2.4
50
Iinh
Inhibit current
Uinh = 0
–400
A
tr
Rise time
30
ms
tf
Fall time
depending on
Io
Fig. 16
Output response as a function of inhibit control
Auxiliary Functions
i Inhibit for Remote On and Off
Note: With open i input: Output is disabled (
Uo = off).
The outputs of the module 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 units, this feature can be used, for ex-
ample, 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). For output response refer to:
Hold-up Time and Out-
put Response.
Vi+
Vi–
Vo–
i
Vo+
Iinh
Uinh
06031
1.6
0.8
0
–0.8
–50
Uinh [V]
Iinh [mA]
–30
0
–10
10
30
50
2.0
1.2
0.4
–0.4
Uinh = 0.8 V
Uo = on
Uo = off
Uinh = 2.4 V
06032
Fig. 14
Definition of Uinh and Iinh.
Fig. 15
Typical inhibit current Iinh versus inhibit voltage Uinh
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