參數(shù)資料
型號(hào): PSA153-2IRY
元件分類(lèi): 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: METAL, CASE A01, MODULE
文件頁(yè)數(shù): 10/10頁(yè)
文件大?。?/td> 411K
代理商: PSA153-2IRY
Chassis Mountable
Switching Regulators
PSA Series
Edition 5/5.2000
9/10
Description of Options
With this series, the options i (inhibit), R (control input for output voltage adjustment) and Y (small soldering pins) are
defined as a package. Other combinations or parts of this package are not available.
R Control for Output Voltage Adjustment
Note: With open R input,
Uo
≈ U
o nom.
The output voltage
Uo can either be adjusted with an exter-
nal reference voltage (
Uext) or with an external resistor
(
Rext). The adjustment range is 0...100% of Uo nom. The
Fig. 11
Voltage adjustment with Uext between R and Go–
Uo
Uext
Uext ≈ 2.5 V –––––
Uo ≈ Uo nom –––––
Uo nom
2.5 V
Fig. 12
Voltage adjustment with external resistor Rext
4000
U
o
Uo nom Rext
Rext ≈ –––––––––––
Uo ≈ ––––––––––––
Uo nom – Uo
Rext + 4000
Vo+
R
+
4000
G
Uref
Uext
+
Go –
06035
Caution: To prevent damage
Uext must neither exceed
2.7 V, nor be negative!
Vo +
R
+
G
4000
Uref
Rext
Go –
06040
minimum differential voltage
DUio min between input and
output (see:
Electrical Input Data) should be maintained.
Undervoltage look-out = minimum input voltage.
Table 9: 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. 10
Output response as a function of inhibit signal
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.
Vi+
Gi–
Go–
i
Vo+
Iinh
Uinh
06009
Fig. 9
Definition of Iinh and Uinh
Fig. 8
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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