參數(shù)資料
型號(hào)： LT1740-7DF
廠商： POWER-ONE INC
元件分類(lèi)： 電源模塊
英文描述： 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE
封裝： CASE T01, MODULE
文件頁(yè)數(shù)： 31/33頁(yè)
文件大?。?/td> 838K
代理商： LT1740-7DF
Rugged Environment
AC-DC Converters >100 Watt
T Series
Edition 4/4.99
7/33
MELCHER
The Power Partners.
Electrical Output Data of the Rectifier Version
General conditions:
–
TA = 20°C, unless TC is specified.
–
Ui = Ui nom, f = 50 Hz
Table 4: Output data
Output
LT/UT 1201
LT/UT 1701
LT 1702
Characteristic
Conditions
min
typ max
min
typ max
min
typ max
Unit
Uo set
Output voltage adjustment
Ui nom
24.25
54.5
48.0
V
Io = 0.5 Io nom
Uo set tol Uo setting tolerance
24.0
24.5
54.25
54.75 47.75
48.25
Uo
Output voltage over input voltage and1 load
Ui min...Ui max
23.35
24.95
52.8
55.8
46.3
49.3
(See fig.:
Typical output voltage verus
Io = 0.01 Io nom
input voltage and output current.)
...Io nom
Uo L
Output Overvoltage protection by
32.5
59.3
electronic inhibit
aUo
Temperature coefficient of output voltage
TC fixed value
–5
–5mV/K
Io nom
Nominal output current
16
10
11
A
Io L
Current limit 2
Uo = 20 V
18 4
14.5
Po L
Output power limit 2
Ui nom
400
550
W
uo
Output voltage noise
Low frequency
Io nom
0.85
1.0
1.05
Vpp
Switching freq.
IEC/EN 61204 5
40
mVpp
Total
BW = 20 MHz
0.9
1.05
1.1
Vpp
DUo I
Static load regulation 1 (See fig.:
Typical
Io = 0.01 Io nom
0.6
1.2
V
output voltage versus input voltage and
...Io nom
output current.)
DUo U
Static line regulation (See:
Typical output
Ui =Ui min...Ui max
0.3
0.8
voltage versus input voltage and output
Io nom
current.)
uo d
Dynamic load regulation 3 Voltage deviation
UI nom
1.7
2.2
t d
(See fig.:
Dynamic cha-
Recovery time
Io nom 1/10 Io nom
0.25
s
racteristic under varying
IEC/EN 61204 6
load conditions.)
Co
Internal output capacitance
86
41
mF
1 Output voltage decreases with rising output current because of output voltage slope for automatic current sharing capability.
2 Due to the large output capacitors the maximum transient value can be much higher.
3 Deviation limited by output overvoltage protection.
4 No power limitation, but current limitation.
5 See: Technical Information: Measuring and Testing.
6 See fig.: Dynamic load regulation.
Output Characteristics (Recifier Version)
The T 1701/1702 types can be operated in 3 different
modes:
– Output voltage regulation
– Output power limitation
– Output current limitation
– In output voltage regulation mode the T unit can be oper-
ated within the full temperature range –25...71
°C.
– In output power or current limitation mode the max. ambi-
ent temperature
TA should not exceed 65°C with free air
convection cooling.
02
4
6
8
10
12
14
16
60
50
40
30
20
10
0
Io [A]
Uo [V]
Ui = 110 Vrms
Ui = 230 Vrms
Output
voltage
regulation
Output
power
limitation
Output
current
limitation
05045
Fig. 6
Output characteristics LT 1701-7
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