參數(shù)資料
型號(hào): LKP5740-6R
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 2-OUTPUT 250 W AC-DC PWR FACTOR CORR MODULE
封裝: HEAT SINK, METAL, CASE K02, MODULE
文件頁數(shù): 25/28頁
文件大小: 674K
代理商: LKP5740-6R
BCD20001-G Rev AB
Page 6 of 28
www.power-one.com
K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
Fig. 4
Theoretical worst case input inrush current versus
time at Vi = 255 V, Rext = 0 for models without
feature E
Fig. 5
Input current versus input voltage at Io nom
Power Factor and Harmonics
Power factor correction is achieved by controlling the input
current waveform synchronously with the input voltage
waveform. The power factor control is active under all
operating conditions.
Fig. 6
Power factor versus output current (LK4501-7R)
100
150
200
250
300 VAC
50
0
1
2
li [A]
04002a
LKP
LK
0.1
1 ms
50
100
Iinr [A]
0
LKP
04054a
0.5
LK
0.8
0.85
0.9
0.95
1.0
0
0.2
0.4
0.6
0.8
Io /Io nom
Vi = 85 VAC
Vi = 230 VAC
LK4501-pf
The harmonic distortion is well below the limits specified in
IEC/EN 61000-3-2, class D, see fig. below:
Fig. 8
Harmonic input currents at Vi = 230 V, Io = Io nom for
LK4501-7R (left bars) and LKP5660-7R.
Fig. 7
Power factor versus output current (LKP5660-7R)
0
0.5
1
1.5
2
2.5
3
3.5
4
3579
11
13
LKP-harm
mA/W
Harm.
0.8
0.85
0.9
0.95
1.0
0
0.2
0.4
0.6
0.8
I
o /Io nom
Vi = 230 VAC
Vi = 187 VAC
LKP5660-pf
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