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参数资料
| 型号： | PSR152.5-7-7PY |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 2/11页 |
| 文件大小： | 652K |
| 代理商： | PSR152.5-7-7PY |
PSR Series
Switching Regulators, PCB & Chassis
Industrial Environment
Edition 4/4.99
10/11
MELCHER
The Power Partners.
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. 11
Output response as a function of inhibit signal
Description of Options
i Inhibit for Remote On and Off
Note: With open i-input, output is enabled (
Uo = on).
Not available for PSR 52.
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. 10
Definition of Iinh and Uinh
Fig. 9
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
R Control for Output Voltage Adjustment
Note: With open R input,
Uo
≈ 1.08 U
o nom.
(Exception: With option Y,
Uo
≈ 1.00 U
o nom)
Option R excludes option P and vice versa.
Not available for PSR 52.
The output voltage
Uo can either be adjusted with an exter-
nal voltage (
Uext) or with an external resistor (R1 or R2).
The adjustment range is 0...108% of
Uo nom. The minimum
differential voltage
DUio min between input and output (see:
Electrical Input Data) should be maintained. Under-volt-
age lock-out = Minimum input voltage.
Fig. 12
Voltage adjustment with Uext between R and Go–
a)
Without option Y: Uo = 0...108% Uo nom, using Uext
2.5 V
Uo
Uext
≈ –––––––––––
Uo
≈ 1.08 U
o nom –––––
1.08
Uo nom
2.5 V
b) With option Y:
Uo = 0...108% Uo nom
2.5 V
Uo
Uext
≈ –––––––––
Uo
≈ U
o nom –––––
Uo nom
2.5 V
Fig. 13
Voltage adjustment with external resistor R1 or R2
c) Without option Y:
Uo = 0...108% Uo nom, using R1
4000
U
o
1.08
Uo nom R1
R1
≈ ––––––––––––––
Uo
≈ ––––––––––––––
1.08
Uo nom – Uo
R1 + 4000
d) With option Y:
Uo = 0...100% Uo nom, using R1
4000
U
o
Uo nom R1
R1
≈ –––––––––––
Uo
≈ –––––––––––
Uo nom – Uo
R1 + 4000
e) With option Y:
Uo = 100...108% Uo nom, using R2
4000
U
o (Uo nom – 2.5 V)
R2
≈ ––––––––––––––––––––––––
2.5 V (
Uo – Uo nom)
Uo nom 2.5 V R2
Uo ≈ ––––––––––––––––––––––––––––––––
2.5 V (
R2 + 4000
) – U
o nom 4000
Vo+
R
+
4000
G
Uref
Uext
–
+
Go –
06035
Caution: To prevent damage
Uext should not exceed
20 V, nor be negative and
R2 should never be less than
47 k
.
Vo+
R
–
+
G
4000
Uref
R1
R2
Go –
06036
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