ICE2QR2280G-1_15 Datasheet, PDF (11/14 Pages) Infineon Technologies AG – 20 W 5 V SMPS Evaluation Board with Quasi- Resonant CoolSET™ ICE2QR2280G-1

20 W 5 V SMPS Evaluation Board with
Quasi-Resonant CoolSET™ ICE2QR2280G-1
Transformer construction
11 Transformer construction
Core and material: EPCOS(N87)or TDK PC44 EF25/13/7
Bobbin: Vertical version
Primary Inductance, Lp=1504 μH( ±10%), measured between pin 4 and pin 5
Start
1
3
7
6
4
Stop
2
5
9
8
3
No. of turns
12
48
4
4
48
Wire size
1XAWG#32
1XAWG#28
3XAWG#25
3XAWG#25
1XAWG#28
Layer
Auxiliary
1_{/2 Primary}
Secondary
Secondary
1_{/2 Primary}
Figure 5 Transformer structure
12 Test results
12.1 Efficiency, regulations and output ripple
Table 4 Efficiency, regulation & output ripple
Vin
(VAC)
85
115
230
265
Pin
Vout
Iout
(W)
(VDC)
(A)
0.0207
4.97
0.00
2.4000
4.97
0.40
6.1700
4.97
1.00
12.4500
4.97
2.00
18.9300
4.96
3.00
26.0300
4.96
4.00
0.0260
4.97
0.00
2.4900
4.97
0.40
6.1300
4.97
1.00
12.3000
4.97
2.00
18.4900
4.96
3.00
25.1000
4.96
4.00
0.0264
4.97
0.00
2.5700
4.97
0.40
6.2500
4.97
1.00
12.3000
4.97
2.00
18.3500
4.96
3.00
24.4300
4.96
4.00
0.0308
4.97
0.00
2.5800
4.97
0.40
6.3200
4.97
1.00
12.3600
4.97
2.00
18.4300
4.96
3.00
24.5000
4.96
4.00
Pout
(W)
1.99
4.97
9.93
14.89
19.85
1.99
4.97
9.93
14.89
19.85
1.99
4.97
9.93
14.89
19.85
1.99
4.97
9.93
14.89
19.85
Application Note
11
Efficiency
(%)
82.83
80.49
79.76
78.67
76.27
79.84
81.01
80.73
80.54
79.09
77.35
79.46
80.73
81.16
81.26
77.05
78.58
80.34
80.80
81.03
Average Efficiency
(%)
78.79
80.34
80.65
80.19
Revision 1.1, 2015-04-02