参数资料
| 型号： | 70IMX7-1515-9C |
| 厂商： | Power-One |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | CONVERT DC/DC 2X 15V 7W |
| 标准包装： | 2 |
| 系列： | * |
IMX7, IMS7 Series Data Sheet
?
Thermal Considerations
If the converter, mounted on a PCB, is located in free, quasi-
stationary air (convection cooling) at the maximum ambient
temperature T A max (see table Temperature specifications) and
is operated at nominal input voltage and output power, the
case temperature T C measured at the measuring point of
case temperature (see Mechanical Data ) will approach T C max
after the warm-up phase. However, the relationship between
T A and T C depends heavily on the conditions of operation and
integration into a system, such as input voltage, output
current, airflow, temperature of surrounding components and
surfaces, and the properties of the printed circuit board. T A max
is therefore only an indicative value, and under practical
operating conditions, T A may be higher or lower.
Caution: The case temperature T C measured at the measuring
point of case temperature (see Mechanical Data ) may under no
circumstances exceed the specified maximum. The installer must
ensure that under all operating conditions T C remains within the
limits stated in the table Temperature specifications.
P o / P o max
JM017
1.0
7-Watt DC-DC Converters
Output Overvoltage Protection
The outputs are protected against overvoltage by Zener
diodes. In the event of an overvoltage, the converter will shut
down and attempt to restart automatically. The main purpose
of this feature is to protect against possible overvoltage,
which could occur due to a failure in the feedback control
circuit. The converters are not designed to withstand external
overvoltages applied to the outputs.
Connection in Series or Parallel
The outputs of single- or double-output models can be
connected in series without any precautions, taking into
consideration that the output voltage should remain below 60
V for SELV operation.
Both outputs of double-output models can be connected in
parallel without any precautions. Several converters (single-
or double-output models) with equal output voltage can be put
in parallel and will share their output current quite equally.
However, this may cause start-up problems and is only
recommended in applications, where one converter is able to
deliver the full load current, e.g., in true redundant systems.
V o [V]
0.8
5.5
05087a
0.6
0.4
0.2
0.5 m/s = 100 LFM
natural cooling
5.0
4.5
4.0
0
20
40
60
80
100
°C
T A
3.5
Fig. 6
Maximum allowed output power versus ambient temperature
3.0
0
0.4
0.8
1.2
1.6
I o [A]
Fig. 8a
Short-Circuit Behavior
The current limitation shuts down the converter, when a short
circuit is applied to the output. It acts self-protecting, and
automatically recovers after removal of the overload condition.
V o versus I o (typ.) of single-output models with V o = 5.1 V
V o [V]
13
05086b
V o [%]
100
70
overload short-circuit condition
switch-off
05041b
12
11
10
9
8
0
0.3 s
t
7
0
0.2
0.4
0.6
0.8
I o total [A]
Fig. 8b
Fig. 7
Overload switch-off (hiccup mode).
V o versus I o (typ.) of double-output models (2 × 12 V) with both
outputs in parallel
BCD20007-G Rev AE, 14-May-2012
Page 8 of 14
www.power-one.com
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