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AN1606 Datasheet(PDF) 16 Page - STMicroelectronics

Part # AN1606
Description  This application features the L4981 PFC controller
PDF  18 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1606 Datasheet(HTML) 16 Page - STMicroelectronics

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AN1606 APPLICATION NOTE
16/18
L1=440
µH; => E55*28*21-21+21 turns 2.5mm/gapped# 14 wires // m=0.4 mm each.
D5,6 = STTH8R06FP;
Q2,3 = STW26NM50F
Note: For the evaluation circuit and external coupled inductor EMC where utilized.
The filter has been achieved as follows: -
Coupled inductor (30 + 30) turns; wire diameter = 0.8mm on a toroidal (40x16x8.5 mm): -
Magnetizing inductance (each half inductor) Lm=8mH and a leakage inductance, Ld=50uH.
Conclusion:
The innovative bridgeless PFC configuration as described in this application note has been successfully tested.
Details have been presented how to implement the technology, which should prove interesting to designers.
Figure 12 shows the test results of efficiency and power dissipation for the application's 800W prototype.
Figure 12.
EFFICIENCY
92
93
94
95
96
97
98
88
110
132
154
176
198
220
242
264
[%]
V
in
B.Less
Standard PFC
P
0=800 W
DISSIPATED POWER
0
10
20
30
40
50
60
70
80
88
110
132
154
176
198
220
242
264
V
in
[w]
B.Less
Standard PFC
P
0=800 W
EFFICIENCY
92
93
94
95
96
97
98
88
110
132
154
176
198
220
242
264
[%]
V
in
B.Less
Standard PFC
P
0=800 W
EFFICIENCY
92
93
94
95
96
97
98
88
110
132
154
176
198
220
242
264
[%]
V
in
B.Less
Standard PFC
P
0=800 W
P
0=800 W
DISSIPATED POWER
0
10
20
30
40
50
60
70
80
88
110
132
154
176
198
220
242
264
V
in
[w]
B.Less
Standard PFC
P
0=800 W
DISSIPATED POWER
0
10
20
30
40
50
60
70
80
88
110
132
154
176
198
220
242
264
V
in
[w]
B.Less
Standard PFC
DISSIPATED POWER
0
10
20
30
40
50
60
70
80
88
110
132
154
176
198
220
242
264
V
in
[w]
B.Less
Standard PFC
B.Less
Standard PFC
P
0=800 W
P
0=800 W



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