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参数资料
| 型号： | 24H1901-2RD7 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | METAL, CASE H02, MODULE |
| 文件页数： | 18/19页 |
| 文件大小： | 356K |
| 代理商： | 24H1901-2RD7 |
Table 6: Inhibit data
Characteristics
Conditions
min
typ
max
Unit
Vinh
Inhibit input voltage to keep
Vo = on
Vi min to Vi max
–50
0.8
VDC
output voltage
Vo = off
TC min to TC max
2.4
50
I inh
Inhibit current
Vinh = 0
–60
–100
–220
A
Auxiliary Functions
i Inhibit for Remote On and Off
Note: With open i input: Output is disabled (
Vo = 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
example, to control the activation sequence of the
converters. If the inhibit function is not required, connect
the inhibit pin 2 to pin 23 to enable the outputs (active low
logic, fail safe). For output response refer to:
Output
Response.
Fig. 7
Definition of Vinh and Iinh.
Fig. 8
Typical inhibit current Iinh versus inhibit voltage Vinh
R-Control for Output Voltage Adjustment
Note: With open R input,
Vo Vo nom.
As a standard feature, single-output models offer an
adjustable output voltage identified by letter R in the type
designation.
The output voltage
Vo1 can either be adjusted with an
external voltage (
Vext) or with an external resistor (R1 or R2).
The
adjustment range is approximative 0 to 110% of
Vo nom. For output voltages Vo > Vo nom, the minimum input
voltage according to
Electrical Input Data increases
proportionally to
Vo/Vo nom.
Fig. 9
Voltage adjustment with external voltage Vext
a)
Vo
0 to 110% Vo nom, using Vext between R (14) and
G (17):
Vo
Vext
2.5 V –––––
Vo
Vo nom –––––
Vo nom
2.5 V
Fig. 10
Voltage adjustment with external resistor R1 or R2
b)
Vo
0 to 100% Vo nom, using R1 between R (14) and
G (17):
R1
4000
Ω Vo
Vo
Vo nom –––––––––––
R1
––––––––––
R1 + 4000
Ω
Vo nom - Vo
c)
Vo
Vo nom to Vo max, using R2 between R (14) and
Vo1+ (20):
Vo max = Vo nom + 10%
4000
Ω Vo (Vo nom – 2.5 V)
R2
––––––––––––––––––––––––
2.5 V (
Vo – Vo nom)
Vo nom 2.5 V R2
Vo
––––––––––––––––––––––––––––––––
2.5 V (
R2 + 4000
Ω) – Vo nom 4000 Ω
Caution: To prevent damage,
Vext should not exceed
8 V, nor be negative.
Caution: To prevent damage,
R2 should never be less
than 47 k
Ω.
Note: R inputs of n models with paralleled outputs may be
paralleled, too, but if only one external resistor is to be
used, its value should be R1/n, or R2/n respectively.
REV. MAR 27, 2006
Page 8 of 19
www.power-one.com
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
Vo1+
R
–
+
G
4000
Ω
Vref
R1
R2
06088
Vo1+
R
+
4000
Ω
G
Vref
Vext
–
+
06087
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