參數(shù)資料
型號(hào): LT1240-7Z
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 500 W AC-DC REG PWR SUPPLY MODULE
文件頁數(shù): 29/32頁
文件大?。?/td> 1000K
代理商: LT1240-7Z
BCD20023 Rev. AA, 3-Sep-2008
Page 6 of 32
www.power-one.com
T Series Data Sheet
500 Watt AC-DC Converters
PFC is active in all operating conditions (voltage regulation,
output power limitation, current limitation).
The power factor control also works with different input voltage
waveforms and frequencies. For special applications with
different frequencies or non-sinusoidal waveforms, please
contact Power-One.
Efficiency
The extremely high efficiency (see fig. 5) is achieved by using
a single-step power factor corrected topology together with the
most advanced technology in power conversion. It allows a
very compact design in a fully enclosed case without forced
cooling.
Electrical Output Data
General conditions:
TA = 20 °C, unless specified.
Vi = 230 VAC, f i = 50 Hz
Table 4: Output data of rectifier versions
Output
LT/UT 1201
LT/UT 1701
LT 1702
Unit
Characteristic
Conditions
min
typ max
min
typ
max
min
typ
max
Vo set
Output voltage adjustment
Vi nom
24.25
54.5
48.0
V
Vo set tol
Vo setting tolerance
Io = 0.5 Io nom
24.0
24.5
54.25
54.75 47.75
48.25
Vo
Output voltage over input voltage and load 1
Vi min – Vi max,
23.35
24.95 52.8
55.8 46.3
49.3
(0.01 – 1) Io nom
Vo L
Overvoltage protection by second control loop
32.5
59.3
αVo
Temperature coefficient of output voltage
– 5
mV/K
Io nom
Nominal output current
16
10
11
A
Io L
Current limit 2
Vo = 20 V
18 4
14.5
Po L
Output power limit 2
Vi nom
400
550
W
vo
Output voltage noise
Low frequency
Io nom
850
1000
1005
mVpp
Switching freq.
IEC/EN 61204
40
Total
BW = 20 MHz
900
1005
1100
Vo I
Static load regulation (droop) 1
(0.01 – 1) Io nom
– 0.6
– 1.2
V
Vo V
Static line regulation 1
Vi min – Vi max,
0.3
0.8
Io nom
Vo d
Dynamic load regulation 3
Voltage deviation UI nom
1.7
2.2
t d
Recovery time
0.1 Io nom
Io nom
0.25
s
IEC/EN 61204 5
Co
Internal output capacitance
86
41
mF
1
Output voltage decreases with rising output current due to the droop characterstic to ease current sharing; see fig. 7.
2
Due to the large output capacitance, the maximum transient value can be much higher.
3
Deviation limited by output overvoltage protection
4
No power limitation, but current limitation
5
See fig. Dynamic load regulation.
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