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參數(shù)資料
| 型號： | PSA481-7IR |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 48 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 216K |
| 代理商： | PSA481-7IR |
PSA Series Extended Data Sheet
Positive Switching Regulator (Rugged)
REV. SEP 23, 2003
Page 6 of 13
Table 4: Inhibit characteristics
Characteristics
Conditions
min
typ
max
Unit
Uinh
Inhibit input voltage to keep
Uo = on
Ui min...Ui max
–10
+0.8
V DC
regulator output voltage...
Uo = off
TC min...TC max
+2.4
+50
t r
Switch-on time after inhibit command
Ui = Ui nom
2ms
t f
Switch-off time after inhibit command
RL = Uo nom /Io nom
4
Ii inh
Input current when inhibited
Ui = Ui nom
10
mA
0
t
0
Inhibit
1
0.1
1
Uo/Uo nom
tr
tf
06001
Fig. 8
Output response as a function of inhibit signal
Vi+
Gi–
Go–
i
Vo+
Iinh
Uinh
06009
Fig. 7
Definition of Iinh and Uinh
Auxiliary Functions
i Inhibit for Remote On and Off
Note: With open i-input, output is enabled (Uo = on)
The inhibit input allows the switching regulator output to be
disabled via a control signal. In systems with several units,
this feature can be used, for example, to control the activa-
tion sequence of the regulators by a logic signal (TTL, C-
MOS, etc.). An output voltage overshoot will not occur
when switching on or off.
Fig. 6
Typical inhibit current Iinh versus inhibit voltage Uinh
4
2
0
-50 -40
20
40
-30
0
-20 -10
10
30
50
5
3
1
Iinh [mA]
Uinh [V]
U
inh
=
0.8
V
U
inh
=
2.4
V
Uo on
Uo off
06010
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