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參數(shù)資料
| 型號(hào)： | 12H1001-7RD5 |
| 廠(chǎng)商： | POWER-ONE INC |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE H02, MODULE |
| 文件頁(yè)數(shù)： | 17/19頁(yè) |
| 文件大小： | 356K |
| 代理商： | 12H1001-7RD5 |
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H Series Data Sheet
50 Watt DC-DC Cassette Converters
REV. MAR 27, 2006
Page 7 of 19
www.power-one.com
Thermal Protection
A temperature sensor generates an internal inhibit signal
which disables the outputs if the case temperature exceeds
TC max. The outputs are automatically re-enabled if the
temperature drops below this limit.
Thermal Considerations
If a converter is located in free, quasi-stationary air
(convection cooling) at the indicated maximum ambient
temperature TA max (see table: Temperature specifications)
and is operated at its nominal input voltage and output
power, the temperature measured at the Measuring point of
case temperature TC (see: Mechanical Data) will approach
the indicated value TC max after the warm-up phase.
However, the relationship between TA and TC depends
heavily on the conditions of operation and integration into a
system. The thermal conditions are influenced by input
voltage, output current, airflow and temperature of
surrounding components and surfaces. TA max is therefore,
contrary to TC max, an indicative value only.
Caution: The installer must ensure that under all
operating conditions TC remains within the limits stated
in the table: Temperature specifications.
Notes: Sufficient forced cooling or an additional heat sink
allows TA to be higher than 50 °C (e.g. 65 °C) if TC max is not
exceeded.
For -2 units at an ambient temperature TA of 65 °C with only
convection cooling, the maximum permissible current for
each output is approx. 50% of its nominal value as per
figure.
Output Response
The reaction of the outputs is similar whether the input
voltage is applied or the inhibit is switched low.
An output voltage overshoot will not occur when the
converter is turned on or off.
Fig. 5
Output current derating versus temperature for -2 units.
Table 5: Output response time tr and tf
Type of Converter
tr at Po = 0 and tf at Po = Po nom
tr and tf at Po = 3/4 Po nom
tr at Po = Po nom
Unit
typ
max
typ
max
typ
max
H1001-2R
3
7
3
7
5
15
ms
H1301-2R
5
15
8
20
10
30
H1501-2R
3
7
5
15
40
H1601-2R
8
20
15
35
20
60
H1901-2R
35
90
50
140
85
220
H2320-2
10
30
15
40
25
70
H2540-2
8
20
10
30
20
50
H3020-2
30
75
45
120
75
200
H3040-2
20
60
30
80
50
140
Conditions: R input not used. For multiple output modules the figures indicated in the table above relate to the output
which reacts slowest. All outputs are resistively loaded. Variation of the input voltage within
Vi min to Vi max does not influence
the values.
Fig. 6
Output response as a function of input voltage (on/off
switching) or inhibit control
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
40
60
70
80
Io/Io nom
TA [ C]
0.9
1.0
Forced cooling
05032
TC max
50
Convection cooling
TA min
0
t r
t f
t
0
Inhibit
1
Output
0.1
Vo nom
t
0
1
0.95Vo nom
t h
Vi
05025
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